CN1297520C - Technique for preparing joint product of ammonium hydrogen from triamine - Google Patents
Technique for preparing joint product of ammonium hydrogen from triamine Download PDFInfo
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- CN1297520C CN1297520C CNB2005100432699A CN200510043269A CN1297520C CN 1297520 C CN1297520 C CN 1297520C CN B2005100432699 A CNB2005100432699 A CN B2005100432699A CN 200510043269 A CN200510043269 A CN 200510043269A CN 1297520 C CN1297520 C CN 1297520C
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- ammonia
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- ammonium
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Abstract
The present invention provides a technique for preparing a joining product of ammonium carbonide from triamine. Exhaust gas containing carbon dioxide, nitrogen and hydrogen from the decarbonizing procedure is washed and filtered, and is loaded in a carbonizer to be absorbed with concentrated ammonia liquor from a storage tank of concentrated ammonia liquor to generate crystallization of ammonium bicarbonate; then the crystallization of ammonium bicarbonate is loaded in a centrifuge for separation from the bottom of the carbonizer, and the final product of ammonium bicarbonate is obtained and packed. Nitrogen, hydrogen and gas containing ammonia discharged from the top of the carbonizer are loaded in a purifying tower, and ammonia in the mixed gas is absorbed with soft water. The purified gas is dehumidified through a gas-liquor separator and is loaded in a raw gas cabinet to be recycled. Ammonia water generated by the purifying tower is loaded in a mother liquor tank for ammonium carbonide, part of the mother liquor of ammonium carbonide is used for a refining procedure as an absorbent for adsorbing and refining ammonia gas and carbon dioxide in the regeneration gas, and then the ammonium carbonide returns to the carbonized mother liquor tank to be recycled. The other part of the mother liquor of ammonium carbonide is pumped into a high-position ammonia absorber to absorb exhaust gas such as gas ammonia and carbon dioxide from a melamine procedure to form concentrated ammonia liquid. The concentrated ammonia liquor is cooled by a cooler and then is loaded in a tank for concentrated ammonia liquor with the concentrated ammonia liquor from the melamine procedure to be stored as an absorbent of the carbonizer to be recycled.
Description
1, technical field
The present invention relates to the volume increase in a kind of chemical fertilizers production, energy-saving and cost-reducing and green technology, specifically a kind of technique for preparing joint product of ammonium hydrogen from triamine.
2, background technology
MingShui Chemical Fertilizer Plant is former before this to produce the old factory of carbon ammonium, and later carbon ammonium is unsalable in the urea of changing the line of production in 1991, originally produces the significant wastage that the idleness of equipment of carbon ammonium causes equipment.But finding in the process of urea of changing the line of production has part decarburization waste gas by emptying, and the resurgent gases in the copper solution scrubbing process is because of can't absorbing with carbonization mother liquor, thereby resurgent gases decontamination effect improving difference can not meet the needs of production.One apply mechanically 1.2 ten thousand tons of trimeric cyanamide devices of urea production though started, improved added value of product at 2003-2004.But produce a large amount of deposed ammonia, waste gas ammonia behind the production trimeric cyanamide, if emit a large amount of wastes that not only can cause the serious environmental pollution and the energy, and can reduce added value of product, ammoniacal liquor take-away market difficulty is big, and particularly winter can't export trade.
3, summary of the invention
After trimeric cyanamide device in 2004 is constructed and put into operation, explore tackling key problem by oneself, adopt the novel process of preparing joint product of ammonium hydrogen from triamine, solved the problem of the superfluous problem of ammoniacal liquor, decarburization waste gas recovery problem and the clean ammonia weak effect of copper preferably, make and scrap idle old carbon ammonium equipment configuration and play a role again, integral body has reduced the consumption of synthetic ammonia, has reached very objective economic benefit.
The objective of the invention is to realize in the following manner, after filtering through off gas scrubber, strainer from the waste gas of decarburization, after entering carbonating tower and being absorbed, generate the solution that contains the hydrogen-carbonate crystalline ammonium by ammoniacal liquor, reach finite concentration through centrifugation, the unlap of finished product bicarbonate of ammonia.Gas ejects from carbonating tower, enters scavenging tower, and soft water absorbs ammonia wherein, and purified gas separates the droplets entrained cabinet that degass through separator and utilizes.
The ammoniacal liquor that scavenging tower produces is sent into carbon ammonium mother liquor tank, and a mother liquor part is used as the absorption agent of refining resurgent gases, absorbs ammonia, carbonic acid gas etc., and mother liquor returns the carbonization mother liquor groove again; A part is advanced high-order ammonia absorber and is absorbed waste gas ammonia and the carbonic acid gas that the trimeric cyanamide operation produces, and forms strong aqua and cools off into strong aqua groove through watercooler again, and the ammoniacal liquor that the trimeric cyanamide operation is come is also sent into the strong aqua groove, recycles as the carbonating tower absorption agent.
After realizing the triamine ammonium carbonate with combined production, the economic benefit that is produced is: the carbon dioxide recovery utilization during (1) drops a hint decarburization reduced greenhouse gas emission, and the hydrogen in will dropping a hint, nitrogen recycling is used for the production of synthetic ammonia to gas holder; (2) copper is cleaned ammonia with the washing of carbon ammonium mother liquor, has improved clean ammonia effect, has increased production the carbon ammonium, stopped the increase weak ammonia, and regeneration is dropped a hint also, and recovery generates synthetic ammonia; (3) the carbon ammonium of dropping a hint, utilize low value ammoniacal liquor production high added value is utilized, reclaimed to carbon ammonium idle unit again; not only produce fine bicarbonate of ammonia, support agricultural construction, and realize cleaner production; protected environment, reduced cost and obtained good economic benefits.
4, description of drawings:
Accompanying drawing is a technique for preparing joint product of ammonium hydrogen from triamine device structure synoptic diagram.
5, embodiment
Shown in the technique for preparing joint product of ammonium hydrogen from triamine by specification accompanying drawing of the present invention, will be after washing and filtering from the waste gas that contains carbonic acid gas, nitrogen and hydrogen of decarburization operation, send into carbonating tower 13 usefulness from the strong aqua of strong aqua storage tank 8 absorb generate the bicarbonate of ammonia crystallization be sent from from carbonating tower 13 bottoms scheming 11 separate the unlap of bicarbonate of ammonia finished product; Nitrogen, the hydrogen of discharging and contain ammonia gas and send into scavenging tower 12 usefulness soft water and absorb wherein ammonia from carbonating tower 13 tops, purified gas send the raw material gas holder 1 recycling through gas-liquid separator separates; Send into carbon ammonium mother liquor tank 10 by the ammoniacal liquor that scavenging tower 12 produces, a carbon ammonium mother liquor part send refining procedure as ammonia and carbonic acid gas in the absorption agent absorption refining resurgent gases, and then time carbon ammonium mother liquor tank 10 recycles; Another part carbon ammonium mother liquor pumps into high-order ammonia absorber 5 and absorbs the gas ammonia and the CO 2 waste gas that produce from the trimeric cyanamide operation and form strong aqua, sends into 8 storages of strong aqua groove through water cooler 6 cooling backs in the lump with the strong aqua that comes from the trimeric cyanamide operation and recycles as the absorption agent of carbonating tower 13.Gas-liquid separator 4 and whizzer 11 isolated liquid are sent into carbon ammonium mother liquor tank 10 and are recycled.
Technique for preparing joint product of ammonium hydrogen from triamine equipment of the present invention is made up of gas holder 1, washer 2, strainer 3, carbonating tower 13, scavenging tower 12, whizzer 11, gas-liquid separator 4, carbon ammonium mother liquor tank 10, strong aqua groove 8 and high-order ammonia absorber 5 and link to each other pipeline and transferpump 7,9,14, washer 2 and strainer 3 are serially connected in the bottom of carbonating tower 13 by pipeline, and carbonating tower 13 bottoms also are serially connected with transferpump 14 by pipeline and are connected with whizzer 11; Whizzer 11 isolated carbon crystalline ammoniums send packaging process by rotary conveyor, and liquid send carbon ammonium mother liquor tank 10 to recycle by pipeline; Not being carbonized gas that tower 13 the absorbs pipeline by its top is connected with scavenging tower 12 bottoms, purified gas is by the pipeline liquid/gas separator 4 of supplying gas from scavenging tower 12 tops, the gas cabinet 1 of supplying gas, liquid send carbon ammonium mother liquor tank 10, softening water inserts from scavenging tower 12 tops, softening water absorbs in scavenging tower 12 behind the ammonia by sending into carbon ammonium mother liquor tank 10, the bottom of carbon ammonium mother liquor tank is provided with 9 fens two-way of infusion pump and outwards carries carbon ammonium mother liquor, the pipeline of leading up to is connected in series high-order ammonia absorber 5 and is connected with strong aqua groove 8 with water cooler 6, another road send refining procedure to return carbon ammonium mother liquor tank 10 again by pipeline, strong aqua groove 8 bottoms are provided with infusion pump 7 and are connected with carbonating tower 13 tops by pipeline, gas ammonia from the trimeric cyanamide operation is connected with high-order ammonia absorber 5 by pipeline, directly send strong aqua groove 8 to recycle as the absorption agent of carbonating tower 13 by pipeline from the ammoniacal liquor of trimeric cyanamide operation.
Claims (3)
1, technique for preparing joint product of ammonium hydrogen from triamine, it is characterized in that will be from the waste gas that contains carbonic acid gas, nitrogen and hydrogen of decarburization operation after washing and filtering, send into carbonating tower use strong aqua from the strong aqua storage tank to absorb to generate the bicarbonate of ammonia crystallization be sent from from the carbonating tower bottom scheming separate the unlap of bicarbonate of ammonia finished product; Nitrogen, the hydrogen of discharging and contain ammonia gas and send into scavenging tower and absorb wherein ammonia with soft water from the carbonating tower top, purified gas send the recycling of raw material gas holder after the gas-liquid separator dehumidifying; Send into carbon ammonium mother liquor tank by the ammoniacal liquor that scavenging tower produces, a carbon ammonium mother liquor part send refining procedure to absorb ammonia and carbonic acid gas in the refining resurgent gases as absorption agent, and then returns carbon ammonium mother liquor tank and recycle; Another part carbon ammonium mother liquor pumps into high-order ammonia absorber and absorbs the gas ammonia and the CO 2 waste gas that produce from the trimeric cyanamide operation and form strong aqua, sends into the storage of strong aqua groove through water cooler cooling back in the lump with the strong aqua that comes from the trimeric cyanamide operation and recycles as the absorption agent of carbonating tower.
2, technique for preparing joint product of ammonium hydrogen from triamine according to claim 1 is characterized in that the isolated liquid of gas-liquid separator and whizzer sends into carbon ammonium mother liquor tank and recycle.
3, a kind of production unit of preparing joint product of ammonium hydrogen from triamine, it is characterized in that comprising washer, strainer, carbonating tower, scavenging tower, separating centrifuge, gas-liquid separator, carbon ammonium mother liquor tank, strong aqua groove and high-order ammonia absorber and link to each other pipeline and transferpump, washer and strainer are serially connected in the bottom of carbonating tower by pipeline, and the carbonating tower bottom also is serially connected with transferpump by pipeline and is connected with separating centrifuge; The isolated carbon crystalline ammonium of separating centrifuge send packaging process by rotary conveyor, and liquid send carbon ammonium mother liquor tank to recycle by pipeline; Not being carbonized gas that tower the absorbs pipeline by its top is connected bottom scavenging tower, purified gas is by the pipeline liquid/gas separator of supplying gas from the scavenging tower top, the gas cabinet of supplying gas, liquid send mother liquor tank, softening water inserts from scavenging tower top, softening water absorbs in scavenging tower behind the ammonia by sending into carbon ammonium mother liquor tank, the bottom of carbon ammonium mother liquor tank is provided with infusion pump and divides two-way outwards to carry carbon ammonium mother liquor, the pipeline of leading up to is connected in series high-order ammonia absorber and is connected with the strong aqua groove with water cooler, another road send refining procedure to return carbon ammonium mother liquor tank again by pipeline, the strong aqua trench bottom is provided with infusion pump and is connected with carbonating tower top by pipeline, gas ammonia from the trimeric cyanamide operation is connected with high-order ammonia absorber by pipeline, directly send the strong aqua groove to recycle as the absorption agent of carbonating tower by pipeline from the ammoniacal liquor of trimeric cyanamide operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100432699A CN1297520C (en) | 2005-04-25 | 2005-04-25 | Technique for preparing joint product of ammonium hydrogen from triamine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100432699A CN1297520C (en) | 2005-04-25 | 2005-04-25 | Technique for preparing joint product of ammonium hydrogen from triamine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1696079A CN1696079A (en) | 2005-11-16 |
| CN1297520C true CN1297520C (en) | 2007-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100432699A Expired - Fee Related CN1297520C (en) | 2005-04-25 | 2005-04-25 | Technique for preparing joint product of ammonium hydrogen from triamine |
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| CN (1) | CN1297520C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862319A (en) * | 2018-07-25 | 2018-11-23 | 安徽华尔泰化工股份有限公司 | A method of utilizing synthetic ammonia feedstock gas disposal melamine by-product ammonium hydroxide |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1872842B (en) * | 2006-06-27 | 2010-05-12 | 山东联合化工股份有限公司 | Associated melamine from carbon ammonium through technique of two-step method under normal pressure |
| CN106608647A (en) * | 2015-10-26 | 2017-05-03 | 安徽华尔泰化工股份有限公司 | Melamine byproduct ammonium hydroxide treatment device |
| CN107200607A (en) * | 2017-06-20 | 2017-09-26 | 山东金沂蒙生态肥业有限公司 | A kind of production method of the poly- member fertilizer of carbon sequestration fixed nitrogen nanometer |
| CN108031242A (en) * | 2018-01-05 | 2018-05-15 | 中国成达工程有限公司 | A kind of mother liquor using triamine tail gas as alkaline raw material inhales ammonia process and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102509A (en) * | 1986-09-15 | 1988-03-30 | 华东化工学院 | Method of ammonium/carbon balance is produced bicarbonate of ammonia |
| CN1061389A (en) * | 1990-11-12 | 1992-05-27 | 中国人民解放军第七○一八工厂 | The recovery and treatment method of ammonia during bicarbonate of ammonia is produced |
-
2005
- 2005-04-25 CN CNB2005100432699A patent/CN1297520C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102509A (en) * | 1986-09-15 | 1988-03-30 | 华东化工学院 | Method of ammonium/carbon balance is produced bicarbonate of ammonia |
| CN1061389A (en) * | 1990-11-12 | 1992-05-27 | 中国人民解放军第七○一八工厂 | The recovery and treatment method of ammonia during bicarbonate of ammonia is produced |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862319A (en) * | 2018-07-25 | 2018-11-23 | 安徽华尔泰化工股份有限公司 | A method of utilizing synthetic ammonia feedstock gas disposal melamine by-product ammonium hydroxide |
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| Publication number | Publication date |
|---|---|
| CN1696079A (en) | 2005-11-16 |
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Owner name: SHANDONG MINGSHUI CHEMICAL CO., LTD. Free format text: FORMER OWNER: MINGSHUI CHEMICAL FERTILIZER PLANT Effective date: 20080314 |
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Effective date of registration: 20080314 Address after: Zhangqiu Mingshui town Ji'nan city Shandong Province Lotus Road No. 15 Patentee after: Shandong Mingshui Chemical Co., Ltd. Address before: No. 15 Lotus Road, Ji'nan, Shandong, Zhangqiu Patentee before: Mingshui Chemical Fertilizer Plant |
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