CN102502706A - Method for reclaiming ammonium hydrogen carbonate from non-condensable gas of stripping tower - Google Patents
Method for reclaiming ammonium hydrogen carbonate from non-condensable gas of stripping tower Download PDFInfo
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- CN102502706A CN102502706A CN2011103439093A CN201110343909A CN102502706A CN 102502706 A CN102502706 A CN 102502706A CN 2011103439093 A CN2011103439093 A CN 2011103439093A CN 201110343909 A CN201110343909 A CN 201110343909A CN 102502706 A CN102502706 A CN 102502706A
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- ammonia
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- bicarbonate
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Abstract
The invention provides a method for reclaiming ammonium hydrogen carbonate from non-condensable gas of a stripping tower. The method comprises the following steps of: introducing water, ammonia produced by a gasification process and non-condensable gas containing carbon dioxide into an absorption tower, performing chemical reaction on the ammonia, the water and the carbon dioxide in the absorption tower to generate solid ammonium hydrogen carbonate, discharging the gas which is not reacted with the water and the carbon dioxide in the non-condensable gas from the top of the absorption tower, and separating the rest absorption liquid to obtain the ammonium hydrogen carbonate. According to the method, the ammonia produced in the gasification process is converted into the solid ammonium hydrogen carbonate by using the principle that the ammonia is reacted with the water and the carbon dioxide to generate the solid ammonium hydrogen carbonate, so that the problem that the water is deteriorated by the ammonia and the problem of air pollution caused by the discharge of the ammonia are solved; and the carbon dioxide is also converted into the ammonium hydrogen carbonate, so that the greenhouse effect produced by discharge of the carbon dioxide to the air is eliminated, and environmental pollution is reduced.
Description
Technical field
The invention belongs to the energy-conserving and environment-protective field, relate to a kind of method that reclaims bicarbonate of ammonia from the stripping tower non-condensable gas.
Background technology
The characteristics of China's energy structure are rich coal, oil-poor, weak breath.This constructional feature has determined that China is that the energy structure of main body can not change for a comparatively long period of time with coal.Coal is the safest, the most reliable energy of China.At present, world petroleum price is high, and the Coal Chemical Industry industry has possessed the economic condition that contends with petrochemical complex.The status of coal in following Chinese national economy is with even more important.
Gasification is the tap of Coal Chemical Industry.Owing to contain nitrogen in the coal; The used oxygen of gasification is also nitrogenous; Part nitrogen can transform ammonification in various coal water slurry gasifications (comprising texaco coal-water slurry gasification, multi-nozzle opposed type coal water slurry gasification, polynary slurry gasification etc.) and the coal dust gasification technology, and the side reaction that nitrogen and hydrogen generate ammonia also may take place in the transformationreation process.The acidic substance that produce when the existence of appropriate amounts of ammonia can neutralize gasification in the system; Can suppress acidic substance to a certain extent to equipment, corrosion of pipe; But the existence of ammonia and accumulation make water quality deterioration in the system, produce crystallization simultaneously and are prone to cause system jams and equipment corrosion.Therefore, part ammonia is removed through the stripping tower stripping.The direct emptying of the ammonia meeting of removing causes environmental pollution, and the decontaminated water treatment system is again because the too high living environment of destroying biological bacteria of ammonia content influences wastewater treatment efficiency.How economical, to handle the gasification ammonia nitrogen effectively be a difficult problem.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method from stripping tower non-condensable gas recovery bicarbonate of ammonia, with the form recovery ammonia of bicarbonate of ammonia.
The present invention reclaims the method for bicarbonate of ammonia from the stripping tower non-condensable gas; With the ammonia of water, gasifying process generation, and carbonated non-condensable gas is introduced in the absorption tower, in the absorption tower; Generate solid-state bicarbonate of ammonia behind said ammonia and water and the carbonic acid gas generation chemical reaction; Wherein, in the non-condensable gas not with the gas of water and carbon dioxide reaction after heating from absorbing cat head emptying, remaining absorption liquid obtains bicarbonate of ammonia after separating.
As the preferred embodiments of the present invention, the absorption liquid of said remainder is realized solid-liquid separation through the stiff device;
As the preferred embodiments of the present invention, the content of carbonic acid gas is excessive with respect to the content of ammonia in the said non-condensable gas;
As the preferred embodiments of the present invention, the content of carbonic acid gas is with respect to the content excessive at least 5% of ammonia in the said non-condensable gas;
As the preferred embodiments of the present invention, when carbonic acid gas in the said non-condensable gas contain quantity not sufficient the time, the carbonic acid gas that purify to reclaim is mended into the absorption tower.
The present invention has the following advantages from the method that the stripping tower non-condensable gas reclaims bicarbonate of ammonia at least: the inventive method utilizes ammonia and water and carbon dioxide reaction to generate the principle of solid-state bicarbonate of ammonia; The ammonia that produces in the gasifying process is converted into solid-state bicarbonate of ammonia; Thereby having solved ammonia makes problem and the discharging of water quality deterioration to the pollution problem of air; Simultaneously; The present invention also transfers carbonic acid gas to bicarbonate of ammonia, has solved Carbon emission and in air, has caused Greenhouse effect, has reduced environmental pollution.
Description of drawings
Fig. 1 reclaims the process flow sheet of the method for bicarbonate of ammonia from the stripping tower non-condensable gas for the present invention.
Embodiment
The present invention comprises following equipment from the method that the stripping tower non-condensable gas reclaims bicarbonate of ammonia: 1. absorption tower; 2. stiff device; 3. centrifugal separation equipment.
The inventive method step is:
At first in the absorption tower, be placed with absorption agent; Like water, the ammonia and the carbonated non-condensable gas that then various gasifying process are produced are introduced in the absorption tower, in the absorption tower; Ammonia and water and carbonic acid gas generation chemical reaction:
generates solid-state bicarbonate of ammonia; At last through heating, in the non-condensable gas not with other gases top emptying of carbonic acid gas and water reaction, remaining absorption liquid entering stiff device from the absorption tower; In the stiff device; Realize solid-liquid separation, after obtain solid-state bicarbonate of ammonia after the centrifugal treating, filtrating then gets into the absorption tower again.
For the ammonia that makes gasifying process produce thoroughly reclaims, feed the carbonic acid gas excessive at least 5% in the absorption tower.When carbonic acid gas is not enough, introduce the absorption tower with purifying the carbonic acid gas that reclaims.
Below in conjunction with embodiment the inventive method is done detailed description:
Embodiment 1
Non-condensable gas is formed (V%): CO
234.43, H
214.53, CO
221.4, CH
40.05, H
2S0.54, N
20.09, Ar0.06, COS0.05, NH
315.79, H
2O13.06, flow 1128Nm
3/ h, theoretical bicarbonate of ammonia 628.15kg/h, actual recovered bicarbonate of ammonia 576.01kg/h, the recovery 91.7% of reclaiming.
Embodiment 2:
Non-condensable gas is formed (V%): CO
236.25, H
213.82, CO19.43, CH
40.05, H
2S0.52, N
20.08, Ar0.05, COS0.05, NH
316.64, H
2O13.11, flow 1176Nm
3/ h, theoretical bicarbonate of ammonia 690.14kg/h, actual recovered bicarbonate of ammonia 637.69kg/h, the recovery 92.4% of reclaiming.
Embodiment 3:
Non-condensable gas is formed (V%): CO
236.25, H
213.82, CO19.43, CH
40.05, H
2S0.52, N
20.08, Ar0.05, COS0.05, NH
316.64, H
2O13.11, flow 1176Nm
3/ h introduces 99% carbonic acid gas 100Nm simultaneously
3/ h, theoretical bicarbonate of ammonia 690.14kg/h, actual recovered bicarbonate of ammonia 647.35kg/h, the recovery 93.8% of reclaiming.
The above is merely one embodiment of the present invention; It or not whole or unique embodiment; The conversion of any equivalence that those of ordinary skills take technical scheme of the present invention through reading specification sheets of the present invention is claim of the present invention and contains.
Claims (5)
1. method that reclaims bicarbonate of ammonia from the stripping tower non-condensable gas; It is characterized in that: with the ammonia of water, gasifying process generation, and carbonated non-condensable gas is introduced in the absorption tower, in the absorption tower; Generate solid-state bicarbonate of ammonia behind said ammonia and water and the carbonic acid gas generation chemical reaction; Wherein, in the non-condensable gas not with the gas of water and carbon dioxide reaction after heating from absorbing cat head emptying, remaining absorption liquid obtains bicarbonate of ammonia after separating.
2. described in claim 1, reclaim the method for bicarbonate of ammonia from the stripping tower non-condensable gas, it is characterized in that: the absorption liquid of said remainder is realized solid-liquid separation through the stiff device.
3. the method from stripping tower non-condensable gas recovery bicarbonate of ammonia as claimed in claim 1, it is characterized in that: the content of carbonic acid gas is excessive with respect to the content of ammonia in the said non-condensable gas.
4. the method from stripping tower non-condensable gas recovery bicarbonate of ammonia as claimed in claim 3, it is characterized in that: the content of carbonic acid gas is with respect to the content excessive at least 5% of ammonia in the said non-condensable gas.
5. as claimed in claim 1ly reclaim the method for bicarbonate of ammonia, it is characterized in that from the stripping tower non-condensable gas: when carbonic acid gas in the said non-condensable gas contain quantity not sufficient the time, mend into the absorption tower purifying the carbonic acid gas that reclaims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103439093A CN102502706A (en) | 2011-11-03 | 2011-11-03 | Method for reclaiming ammonium hydrogen carbonate from non-condensable gas of stripping tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103439093A CN102502706A (en) | 2011-11-03 | 2011-11-03 | Method for reclaiming ammonium hydrogen carbonate from non-condensable gas of stripping tower |
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|---|---|
| CN102502706A true CN102502706A (en) | 2012-06-20 |
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|---|---|---|---|
| CN2011103439093A Pending CN102502706A (en) | 2011-11-03 | 2011-11-03 | Method for reclaiming ammonium hydrogen carbonate from non-condensable gas of stripping tower |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815844A (en) * | 2012-09-05 | 2012-12-12 | 中国中化股份有限公司 | Method for pretreating coal chemical industry production waste water and recycling resources of waste water |
| CN105776248A (en) * | 2016-05-23 | 2016-07-20 | 定州旭阳科技有限公司 | Ammonium carbonate production device and production method thereof |
| CN111135600A (en) * | 2020-01-03 | 2020-05-12 | 恒力石化（大连）炼化有限公司 | Conversion stripping device for preventing ammonium salt crystallization from reducing corrosion by ammonia-containing acidic gas |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4335088A (en) * | 1981-02-26 | 1982-06-15 | Efimov Vladimir M | Process for producing ammonium carbonate |
| CN1034904A (en) * | 1988-02-08 | 1989-08-23 | 上海化工设计院 | The method of purifying coke oven gas and getting ammonium hydrogen carbonate as by-product |
| CN1332115A (en) * | 2001-08-10 | 2002-01-23 | 程培胜 | Method of coproducing potassium sulfate while producing synthetic ammonia |
| CN1736868A (en) * | 2005-08-08 | 2006-02-22 | 徐玉庆 | Method for preparing ammonium carbonate using carbon-dioxide |
| CN101298018A (en) * | 2008-06-04 | 2008-11-05 | 北京卓易天元科技发展有限公司 | Method for absorbing CO2 of stack gas by ammonia water |
| CN101857246A (en) * | 2010-06-28 | 2010-10-13 | 董继文 | Process method for co-producing ammonium bicarbonate by using coking plant waste |
-
2011
- 2011-11-03 CN CN2011103439093A patent/CN102502706A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4335088A (en) * | 1981-02-26 | 1982-06-15 | Efimov Vladimir M | Process for producing ammonium carbonate |
| CN1034904A (en) * | 1988-02-08 | 1989-08-23 | 上海化工设计院 | The method of purifying coke oven gas and getting ammonium hydrogen carbonate as by-product |
| CN1332115A (en) * | 2001-08-10 | 2002-01-23 | 程培胜 | Method of coproducing potassium sulfate while producing synthetic ammonia |
| CN1736868A (en) * | 2005-08-08 | 2006-02-22 | 徐玉庆 | Method for preparing ammonium carbonate using carbon-dioxide |
| CN101298018A (en) * | 2008-06-04 | 2008-11-05 | 北京卓易天元科技发展有限公司 | Method for absorbing CO2 of stack gas by ammonia water |
| CN101857246A (en) * | 2010-06-28 | 2010-10-13 | 董继文 | Process method for co-producing ammonium bicarbonate by using coking plant waste |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815844A (en) * | 2012-09-05 | 2012-12-12 | 中国中化股份有限公司 | Method for pretreating coal chemical industry production waste water and recycling resources of waste water |
| CN102815844B (en) * | 2012-09-05 | 2014-03-26 | 中国中化股份有限公司 | Method for pretreating coal chemical industry production waste water and recycling resources of waste water |
| CN105776248A (en) * | 2016-05-23 | 2016-07-20 | 定州旭阳科技有限公司 | Ammonium carbonate production device and production method thereof |
| CN105776248B (en) * | 2016-05-23 | 2018-06-19 | 定州旭阳科技有限公司 | Ammonium carbonate process units and its production method |
| CN111135600A (en) * | 2020-01-03 | 2020-05-12 | 恒力石化（大连）炼化有限公司 | Conversion stripping device for preventing ammonium salt crystallization from reducing corrosion by ammonia-containing acidic gas |
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Application publication date: 20120620 |