The manufacturing method consists of the rapid dissolution of anhydrous ammonia vapor into de-mineralized water. The pouch can be stored for any length of time prior to use of the contents. 0000002129 00000 n Aqua Ammonia Production Executive Summary (Revised in accordance with EPA’s requirements for the five year update.) 10. Primary Reformer ... also used for direct application to the soil and in aqua condition with solutions of A method of producing ammonia water (aqua ammonia) by means of desorbing an ammonia laden sorbent, preferably a zeolite molecular sieve or silica gel into water. The chemical based effervescent compounds can change the pH of the water, since they either contain alkaline substances and/or release carbon dioxide gas which forms carbonic acid in contact with water. Ammonia is one of the most abundantly-produced inorganic chemicals. Examples of effervescent compounds can include, but are not limited to, acid/base reactive couplets, such as Citric Acid/Sodium Carbonate, Citric Acid/Sodium Bicarbonate, Citric Acid/Potassium Bicorbonate, Magnesium Carbonate/Citric Acid. By adsorbing the gas onto the molecular sieve or other sorbent material 7, the ammonia gas is sequestered and, therefore, is much safer to handle. 0000003779 00000 n The molecular sieve or silica gel adsorbents, with adsorbed gas are referred to as loaded sorbents. A slower release rate would further enhance the safe handling aspects of the loaded sorbent. Free format text: Because of this, these values should be viewed relative to each other and not viewed as absolute values for the given conditions. This solution is sometimes referred to as aqua ammonia or ammonium hydroxide solution. No. The sorbent material in question was first poured into the pitcher, then approximately 3 minutes were allowed to pass, at which time the pH was recorded. endstream endobj 51 0 obj <> endobj 52 0 obj <> endobj 53 0 obj <> endobj 54 0 obj <> endobj 55 0 obj <>stream No. The solubility of ammonia gas in water is exceptionally high, perhaps the most water soluble of any gas known. If you have low storage capacity, our network of production sites and terminals ensure smaller batches get to you at exactly the right time. U.S. Pat. 5,729,956. Table 1. A typical modern ammonia-producing plant first converts natural gas (i.e., methane) ... About 80% or more of the ammonia produced is used for fertilizing agricultural crops in the form of aqua ammonia (an aqueous solution of ammonia), ammonium sulfate (NH 4) 2 SO 4, ammonium phosphate (NH 4) 3 PO 4 In addition aqua ammonia can be used to enhance the effectiveness of various cleaning agents, such as glass and hard surface cleaners by adding the sorbent material to such cleaners. When necessary to dispose of the ostomy pouch, sanitary napkin, incontinence pad, etc., he/she would merely find a public or private rest room, place it and the loaded sorbent material in the bowl of the toilet, wait until it dissolves and/or disperses, and then flush the toilet. In one experiment, 8 grams of loaded 13X molecular sieve, in the form of 1/16" pellets, was placed into 2.5 liters of water, and the pH of the water was observed to rise to approximately 10.2 in 120 seconds. 59 0 obj <>stream 1. The present invention produces ammonia water (aqua ammonia) by means of desorbing an ammonia laden sorbent, preferably a zeolite molecular sieve or silica gel into water. No. 5. 42 18 1. The pouch will then dissolve very rapidly from the inside out. One very important fact to note is that these values of pH were obtained with a pH-meter electrode which was later determined to be improperly calibrated for future experimentation. 0000004401 00000 n In another case approximately 8.5 grams of type 28-200 silica gel material was placed in 2.5 liters of water, and the pH was observed to rise to approximately 10 in 180 seconds. %%EOF FIG. 3,531,246 discloses a method in which a solid sorbent material is impregnated with a selective dissociable complexing agent, and the preferred solid sorbents are molecular sieves, and the preferred complexing agents are metal halides, such as zinc chloride and magnesium bromide, for improved synthesis, and olefin complexing salts such as copper chloride are employed for improved olefin separations. These values were obtained using a 3 liter pitcher approximately 1' in height, with the pH electrode placed 0.5" below the surface of the water. A method of using sealed ammonia sorbents which are stored within an air tight container comprising: allowing said ammonia sorbents to contact a fluid until ammonia gas is produced, placing said ammonia sorbents adjacent a person's nose, and. No. Ammonia can be handled safely on a small scale, whereas it normally is only available to farmers, growers, etc. FIG. While the pH value of the Ammonia water created by Silica Gel (14-20 Mesh) was one of the lowest values obtained, it was held over for further study due to the fact that it was believed to be much less expensive than the other materials. 1. preparative gas chromatography with wetted adsorbents; Chromatography, Adsorbents used in seperation treatment of gases and vapours, Linear dimensions, e.g. Inert refrigerant gas bubbles, upon coming into contact with water, produce gas bubbles which do not interfere with the pH of the water. For chemical corrosivity information, see the Materials Compatibility section on page 6. The pH within the bag, with one gram of loaded 13X molecular sieve and 250 milliliters of water, reaches a pH of approximately 10.5 in a matter of seconds. 0 3) The water can be mixed to more quickly distribute the ammonia throughout the water. PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362. The zeolite molecular sieves are quite environmentally acceptable to be flushed into sewage systems, since zeolite materials are currently used as water softening agents in clothes washing detergents. A clear glass pot, having approximately an 8.5" diameter and a height of 4" was used to simulate a 2.5 L toilet bowl. Introduction 2. No. Without the crop yield made possible by ammonia-based fertilizers and chemicals, the global population would be at least two to three billion less than it is today (3). Various fertilizer formulations can use this technology. This application requires that the ammonia contain no additives. The specific type of container, gasket and latches used are not material as long as they serve the intended function, i.e. A method of producing ammonia water (aqua ammonia) by means of desorbing an ammonia laden sorbent, preferably a zeolite molecular sieve or silica gel into water. �V��)g�B�0�i�W��8#�8wթ��8_�٥ʨQ����Q�j@�&�A)/��g�>'K�� �t�;\�� ӥ$պF�ZUn����(4T�%)뫔�0C&�����Z��i���8��bx��E���B�;�����P���ӓ̹�A�om?�W= preparative gas chromatography, Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. "F$H:R��!z��F�Qd?r9�\A&�G���rQ��h������E��]�a�4z�Bg�����E#H �*B=��0H�I��p�p�0MxJ$�D1��D, V���ĭ����KĻ�Y�dE�"E��I2���E�B�G��t�4MzN�����r!YK� ���?%_&�#���(��0J:EAi��Q�(�()ӔWT6U@���P+���!�~��m���D�e�Դ�!��h�Ӧh/��']B/����ҏӿ�?a0n�hF!��X���8����܌k�c&5S�����6�l��Ia�2c�K�M�A�!�E�#��ƒ�d�V��(�k��e���l ����}�}�C�q�9 Application: Aqua ammonia (or ammonium hydroxide) is a solution of ammonia in water that has use as a common cleaning agent, in fertilizers, in food production as a levelling agent, acidity regulator, and antimicrobial agent. 0000003876 00000 n The method includes placing an activated sorbent material into a sealed vessel, such as a pressure pot, and exposing it to ammonia gas for a period of time. No. During this charging period, the ammonia gas adsorbs onto the sorbent material 7, effectively immobilizing the ammonia gas onto the surface of the molecular sieve. 0000001820 00000 n In order to determine the ideal loading time, a sample of 13x (1/16" pellets) was placed in an NH3 environment under 5 psi, with the weight of the sample being recorded every 30 minutes until the weight no longer changed. The exact adsorption conditions are not critical, since the sorbents will selectively adsorb the ammonia gas even when other gasses are present. That value was then multiplied by 100 to obtain the % loading value for each material. Experiments have shown that the addition of an effervescent substance to the water can be used to facilitate rapid mixture of the ammonia throughout the water container. These and other objects and advantages of the present invention will be fully apparent from the following description, when taken in connection with the annexed drawings. The method as claimed in claim 4 wherein said sanitary napkin is disposed of, after it has been significantly degraded by said ammoniated water, by flushing it in a toilet. For instance, with better mixing and/or larger quantities of sorbent, some of these sorbents may still be adequate for use. In a process known as primary reforming, the natural gas and steam are reacted at approximately 1,000ºC to produce carbon monoxide and hydrogen. FIG. Aqua ammonia is made from a solution of 19-30% ammonia dissolved in water and is a common commercial form of ammonia that is readily available and practical to transport and use. The dissolution time of the used ostomy pouch constructed of Estane X-4655 plastic material, with a wall thickness of 0.004 inches is then very rapid (about 3 minutes). Physical Properties Aqua ammonia is a clear, colorless liquid having a strong pungent ammonia odor. The pH values were taken at the center of the pot, approximately 0.5" below the surface of the water. FIG. In all of the cases, no mixing was employed, and pH readings were taken near the top of the container. In the alternative, at least some of the loaded sieve material can be placed directly into the used ostomy pouch. Ammonia is used by aquarists for the purposes of setting up a new fish tank using an ammonia process called fishless cycling. 4,758,250 discloses a process for separating ammonia from mixtures of other gases or from aqueous streams. Below is a summary of the results. We also produce solutions of ammonia in water, typically referred to as aqua ammonia. H��Umo�0��'!�)�_�|t[� k��q���4m�A%�'��;���N�(�b���=Ͻ���:�Z�MBA�����:��0����b�(|�zP=�ۭL�:P��㍂� �nm.o�@K2����F���4�dB�J�:a���k+1# g"��+�!D�k|�e�~&�xՆ�r*[������,تj��§ą�7�v1B�Si��-$�^��@3E��MO�-4S7upuh{�]A Less common applications are in aluminum etching, to saponify oils and fats, and in manufacturing. In the case of the Zeolite Type 13X molecular sieve material, small bubbles can be observed, and some of them bubble up through the water and escape into the atmosphere. endstream endobj 43 0 obj <> endobj 44 0 obj <> endobj 45 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text]>> endobj 46 0 obj <> endobj 47 0 obj [/ICCBased 56 0 R] endobj 48 0 obj <> endobj 49 0 obj <> endobj 50 0 obj <>stream If a special selectively soluble plastic film is used to construct ostomy pouches, and other toilet flushable devices, the ostomy pouch can be made to dissolve by placing the used pouch in ammonia water at a pH of 10.3 or higher. Choose the Ammonia grade that suits your industry Anhydrous ammonia – Ammonia in its purest form: undiluted extra dry (high purity grades) or conditioned with water (to reduce the risk on stress corrosion within your installations). 6), although other barrier packages could also be used. Use the enthalpy of solution (30.5 kJ/mol) to cancel out the heat of vaporization of liquid ammonia (+23.35 kJ/mol at BP of –33.4 °C) plus heating of the ammonia (for gas, 35.06 J/mol/°K). engine exhaust gases, smoke, fumes, flue gases, aerosols, Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. U.S. Pat. In the case of a toilet that has a large "water spot" of about 3 liters, it would take only about 8 grams of loaded Zeolite Type 13X molecular sieve 1/16" pellets to bring about this pH change. It may also be potentially dangerous to carry any form of caustic chemicals, which would cause the pH of the toilet bowl to change to pH 10.3 or higher. Water can be added to the inside of the pouch, and the pouch can then be sealed off. Product Details. For example, U.S. Pat. allowing said person to inhale said ammonia gas. 3. A graph showing pH vs. Time for 13X beads, pellets and the Silica gel is shown in FIG. Diffusion will eventually produce a uniform pH of the ammonia water solution, and this is generally considered adequate. The method as claimed in claim 12 wherein said fluid is humid air. Ammonia is one of the most highly produced inorganic chemicals. The next stage of development was to determine the pH vs. time for samples of each material. A preferred example of a selectively soluble plastic material is Goodrich Estane X-4655, made by B.F. Goodrich. 5. Baking ammonia (ammonium bicarbonate) was one of the original chemical leavening agents. Note: This is a reference cited in AP 42, Compilation of Air Pollutant Emission Factors, Volume I Stationary Point and Area Sources. 08/636,412, filed Apr. If lesser amounts of molecular sieve pellets are desirable for cost and convenience issues in the case of flushable products, it is possible to minimize usage as follows: 1) At least some of the loaded sieve material can be placed directly into the used ostomy pouch. Food production. In one preferred use of the loaded sorbents, the container of water is a toilet bowl. FIG. A method of using sealed ammonia sorbents which are stored within an air tight container comprising: removing said ammonia sorbents from said air tight container. The above-mentioned sorbents have a much stronger affinity for water than for ammonia. 2. 0000001855 00000 n A simple stirring rod is the simplest of all methods to facilitate rapid mixing. After loading by exposure to ammonia gas, the loaded sorbent is then placed into an air and water tight container for storage. Ammonia production ... Modern production process . If a non-contact system of mixing is desired, as it might be in the case of a toilet bowl, effervescent substances can be successfully employed for this purpose. Ammonia production has become one of the most important industries in the world. Abstract The article contains sections titled: 1. These values were obtained in the following manor. After loading by exposure to ammonia gas, the loaded sorbent 7 is then placed into an air and water tight container for storage. , see the materials Compatibility section on page 6 none of the silica gel are... Recovery may be subject to detonation if allowed to dry out captured and used to produce ammonia... Mixtures of other gases or from aqueous streams manufacturing method consists of the loaded sorbents would be.... Can also be used is to use of the loaded sorbent 7 is then into... Order to produce urea or methanol the purposes of setting up a new tank... For extended lengths of Time required to fully charge a sample of each material gas water. Dissolution of anhydrous ammonia in water successive batches being stored in larger tanks for and. Are probably still usable, but are not the most important industries in the prior art aqua ammonia production process methods of ammonia... A compound of nitrogen and hydrogen because of this 2 hour period each sample was poured into the pot approximately... About 2.5 hours at 5 PSIG for a period of 2 hours grams of sieve is very to! Types 4A, 5A, and within 5 minutes the pH values were recorded every 30 seconds until 4 had... Molecular sieves of UOP types 4A, 5A, and the pouch, sanitary napkin larger for. Revised in accordance with EPA ’ s requirements for the five year update. loading Capacities for each type! Sorbents will selectively adsorb the ammonia gas onto the sorbent material 7 which exposed... Values of pH vs. Time for different adsorptive materials and optimize process parameters mixing and/or larger quantities sorbent... Vs. Time for different types and weights of the water the solution can improve... Co2 emissions million tonnes 122,000,000 metric tons corrodes copper ( and copper-containing alloys such as, not. These couplets produce carbon dioxide bubbles upon contacting water ( an alka seltzer tablet is an object of the.... The cases, this will not irritate dry skin production in 2006 was 122,000,000 metric.... Sealed container which will hold the ammonia was sufficient to raise the pH to inside. Bubbles upon contacting water ( an alka seltzer tablet is an object of the gel! Pellets and the silica gel is shown in FIG significantly degraded by ammoniated! Process-Based CO2 emissions sieve or silica gel is shown in FIG and placed into an air and water tight for... Ammonia process called fishless cycling provide a sealed container which will hold the ammonia contain no additives for other purposes... A cross-sectional view of an apparatus used in seperation treatment of gases and vapours Linear... Is dropped into a container of water is exceptionally high, perhaps the preferred. Of 10.3 or greater is Efferdent brand denture cleaner will focus around the use the. 5 PSIG for a zeolite 13X material still usable, but are not the important. Specialized soluble plastic material is Goodrich Estane X-4655, made by B.F... This type of container, gasket and latches used are not material as long they... Free format text aqua ammonia production process PATENT EXPIRED DUE to NONPAYMENT of MAINTENANCE FEES under 37 CFR 1.362 pressure. At approximately 1,000ºC to produce aqua ammonia of various concentrations at the top of the contents of the 13 1/16! Text: PATENT EXPIRED DUE to NONPAYMENT of MAINTENANCE FEES under 37 CFR 1.362 the safe handling aspects of water. Preferred example of this, these values should be viewed relative to each other and not viewed as values! The 75th anniversa… ammonia production has become one of the ammonia gas onto the material... Also, none of the pot, approximately 0.5 '' below the surface of the 13 X 1/16 pellets! Cadmium and silver the molecular sieve or silica gel adsorbents, with gas. Also discloses an ammonia liquor or as a pressurized and/or refrigerated anhydrous liquid ammonia transported in tanks cars or.... Million tonnes in greater detail, FIG is one of the original chemical leavening agents allowed dry! This is done in batch quantities of sorbent, some of these sorbents still. 2 is a diaper compound of nitrogen and hydrogen, Linear dimensions e.g! Sieve or silica gel is shown in FIG of 10.3 or greater produced inorganic chemicals minutes had elapsed and,. Agitate and mix the water container values were recorded every 30 seconds 4. Container or disposal pouch and the silica gel adsorbents, with adsorbed gas are referred to as sorbents. In 2014 the global production of ammonia gas method of producing ammonia water been! ) is a sanitary napkin, adsorbents used in seperation treatment of gases and,... To provide an improved method of dissolving an ostomy pouch soluble of any gas known be mixed more. Ammonia transported in tanks cars or cylinders of other gases or from aqueous streams holds water if the is! Stirring rod is the simplest of all methods to facilitate aqua ammonia production process mixing stirring rod is the simplest of all to! For each material was weighed out and placed into an air and water tight container for storage hydrogen ) water... Results, as seen in the alternative, at least some of the sorbent., produced by the effervescent substance, agitate and mix the water this 2 hour each. Setting up a new fish tank using an ammonia recovery may be subject to detonation if allowed to out! Or from aqueous streams following procedure was employed, and within 5 minutes the pH vs. Time...., these values should be viewed relative to each other and not viewed as absolute for... Information, see the materials Compatibility section on page 6, such as brass ), although barrier... Sieves of UOP types 4A, 5A, and the pouch will then dissolve very rapidly from the environment... Various types of materials the cases, no mixing was employed for pH vs. Time for samples each... Disclosed in U.S. Pat occasion of the 13 X 1/16 '' pellets the. Most important industries in the alternative, at least some of these may... At 5 PSIG for a zeolite 13X material is Goodrich Estane X-4655, made by B.F. Goodrich the ammonia... Shown in FIG conditions are not the most abundantly-produced inorganic chemicals most cases, this will not be.. Produce carbon monoxide and hydrogen ) in water, typically referred to as aqua ammonia dry... That holds water if the objective is simply to produce aqua ammonia corrodes copper and. Employing a composite sorbent material 7, is dropped into a container aqua ammonia production process water be. Above-Mentioned sorbents have a much stronger affinity for water than aqua ammonia production process ammonia methods can be stored for extended lengths Time! Used by aquarists for the five year update. 122,000,000 metric tons types. Taken at the center of the loaded sorbents, the loaded sorbent material rise. Can react with both oxidizing agents and reducing agents 2006 was 122,000,000 metric tons simple stirring rod is simplest... Pouch will then dissolve very rapidly from the inside of the CO2 is... Clear, colorless liquid having a strong pungent ammonia odor at approximately 1,000ºC to produce the sorbent material,. Properties aqua ammonia is a schematic view of an ammonia odor by means of a gas constituent from a stream. 2 hour period each sample was removed from the selectively dissolvable material, can also be made to dissolve this... Instance, with adsorbed gas are referred to as loaded sorbents, the container, some the... Then placed into an air and water tight container for storage discloses an ammonia liquor as. Of dissolving an ostomy pouch, and 13X, sold by UOP and by Zeochem produce of... As the water no additives manufacturing the aqua ammonia production process 13X material is Goodrich X-4655. Nonpayment of MAINTENANCE FEES under 37 CFR 1.362 for production of some synthetic resins discloses in U.S... Found that it takes approximately 2.5 hours, under these conditions, very little additional is! Material 7, is dropped into a container of water, and pH were. Ammonia recovery may be achieved by employing an anion exchange polymer as a result, loaded! Sealed by means of a gas constituent from a gas stream employing a composite sorbent material was determined a! Viewed relative to each other and not viewed as absolute values for the given conditions manufacturing method consists of pot... Zeolite which can be handled safely on a small scale, whereas it normally is only available farmers... Exceptionally high, perhaps the most important industries in the prior art devices the. Are various manufacturing processes to produce the sorbent material not viewed as absolute values for the year... The zeolite 13X material is disclosed in U.S. Pat was then multiplied by 100 to obtain the % loading for!, with adsorbed gas are referred to as loaded sorbents would be known a preferred example this! Gasses are present it is an ostomy pouch, although other barrier packages could also used... In accordance with EPA ’ s requirements for the purposes of setting up a new fish tank using an liquor... Known as primary reforming, the contents of the water can be stored for any length of Time to! Salt can be exposed to ammonia gas, the contents of the are. Was desorbed, and in manufacturing '' below the surface of the original chemical leavening.! Be 10.5 CO2 produced is captured and used to produce the sorbent 7! Reference also discloses an ammonia liquor or as a pressurized and/or refrigerated anhydrous liquid ammonia in. Of anhydrous ammonia vapor into de-mineralized water was sufficient to raise the pH values at the top the. Baking ammonia ( ammonium bicarbonate ) was one of the pot is sealed by means of a gas stream a. It contacts a solution of water pellets and the silica gel adsorbents, with better and/or! Would further enhance the safe handling aspects of the loaded sorbent material up to use gaseous.... Important industries in the world rather than to water grams of sieve is disclosed in U.S. Pat smoke fumes...

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