CN101723327A - Hydrochloric acid absorption tower and process for producing hydrochloric acid for production - Google Patents
Hydrochloric acid absorption tower and process for producing hydrochloric acid for production Download PDFInfo
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- CN101723327A CN101723327A CN200910220307A CN200910220307A CN101723327A CN 101723327 A CN101723327 A CN 101723327A CN 200910220307 A CN200910220307 A CN 200910220307A CN 200910220307 A CN200910220307 A CN 200910220307A CN 101723327 A CN101723327 A CN 101723327A
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Abstract
The invention relates to a hydrochloric acid absorption tower and a process for producing hydrochloric acid for production. The absorption tower comprises a heat exchanger, a first vacuum pump, a circulating pump, a hydrochloric acid storage tank, a tail gas buffer tank, a falling film absorber, a first hydrochloric acid tank, a second hydrochloric acid tank, a second vacuum pump, an absorption tower and a tail gas chimney. The process for producing the hydrochloric acid for production comprises the following steps: buffering, primary absorption, secondary absorption, circulating absorption and storage. The absorption tower and the process have the advantages that the environment pollution is reduced, the waste is changed into valuable, the economic benefit is produced, and the process is compact and simple to operate.
Description
Technical field
The present invention relates to a kind of hydrochloric acid absorption tower, especially is that the hydrochloric processing wastewater in the production process generates the technology of producing with hydrochloric acid.
Background technology
In preparation olefin polymerization catalysis process, need a large amount of and excessive use solvent oil (for example decane, kerosene, Vaseline, white oil, silicone oil) and titanium tetrachloride, from economic angle, must carry out recycle and reuse.In reclaiming the solvent oil process, because of its contain when the washing titanium tetrachloride≤2% titanium tetrachloride need wash removal of impurities, titanium tetrachloride is met water, the water kind produces and contains weak salt acid waste water, ordinary method is discharging or circulation recovery after the neutralizing treatment, and resource has been wasted in discharging, reclaims waste of manpower, material resources.
Summary of the invention
The technical problem to be solved in the present invention has provided a kind of hydrochloric trade effluent and has generated the technology of producing with hydrochloric acid, this process reform thinking, abandoned conventional treatment method, saved the wastewater treatment expense, turn waste into wealth, produced economic benefit, reduce environmental pollution, the succinct easy handling of technology of the present invention, advanced technology is leading.
For overcoming the above problems, concrete technical scheme of the present invention is as follows: a kind of hydrochloric acid absorption tower, comprise interchanger, first vacuum pump, recycle pump, the salt acid storage tank, tail gas buffer, falling-film absorber, first hydrochloric acid tank, second hydrochloric acid tank, second vacuum pump, absorption tower and tail gas funnel are formed, wherein the outlet of interchanger bottom links to each other with first vacuum pump, the outlet on interchanger top links to each other with the salt acid storage tank, the following outlet of first vacuum pump links to each other with the salt acid storage tank by recycle pump, the outlet of tail gas buffer links to each other with falling-film absorber, the outlet of falling-film absorber links to each other with first hydrochloric acid tank respectively with the outlet of salt acid storage tank, another outlet of falling-film absorber links to each other with the absorption tower, the following outlet of first hydrochloric acid tank reenters falling-film absorber by a recycle pump part, another part enters second hydrochloric acid tank, the upper outlet of second hydrochloric acid tank links to each other with the absorption tower, the following outlet of second hydrochloric acid tank enters in the absorption tower by recycle pump, the top outlet on absorption tower links to each other with second vacuum pump, the following outlet on absorption tower links to each other with second hydrochloric acid tank, the following outlet of second vacuum pump links to each other with the salt acid storage tank by recycle pump, and the outlet of the second vacuum pump top links to each other with tail gas funnel.
Hydrochloric trade effluent with hydrochloric acid absorption tower processing generates the technology of producing with hydrochloric acid, and its step is as follows:
1) after the processing of titanium tetrachloride solvent and inertia alkane solvent, the technology HCL gas of generation enters tail gas buffer;
2) technology HCL gas enters in the falling-film absorber and the abundant absorbing enriched of technology salt sour water, enters then in first hydrochloric acid tank, and the salt sour water in first hydrochloric acid tank enters falling-film absorber once more through recycle pump, carries out the absorption of hydrochloric acid repeatedly;
3) first absorption technique salt sour water enters the absorption tower and carries out secondary and absorb, and enters then in second hydrochloric acid tank, and the salt sour water in second hydrochloric acid tank enters the absorption tower once more through recycle pump, carries out the absorption of hydrochloric acid repeatedly;
4) after technology salt sour water that secondary absorbs reaches concentration and is 30%, enter the salt acid storage tank through second vacuum pump, the tail gas of trace is discharged from tail gas funnel simultaneously.
This hydrochloric acid absorption tower adopts said structure and technology, and the hydrochloric acid trade effluent can be absorbed the hydrochloric acid process gas fully, arrives the suitable production hydrochloric acid of concentration.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail:
Fig. 1 is the structural representation of hydrochloric acid absorption tower.
Embodiment
As shown in Figure 1, a kind of hydrochloric acid absorption tower, comprise interchanger 1, first vacuum pump 2, recycle pump 3, salt acid storage tank 4, tail gas buffer 5, falling-film absorber 6, first hydrochloric acid tank 7, second hydrochloric acid tank 8, second vacuum pump 9, absorption tower 10 and tail gas funnel 11 are formed, wherein the outlet of interchanger 1 bottom links to each other with first vacuum pump 2, the outlet on interchanger 1 top links to each other with salt acid storage tank 4, the following outlet of first vacuum pump 2 links to each other with salt acid storage tank 4 by recycle pump 3, the outlet of tail gas buffer 5 links to each other with falling-film absorber 6, the outlet of falling-film absorber 6 links to each other with first hydrochloric acid tank 7 respectively with the outlet of salt acid storage tank 4, another outlet of falling-film absorber 6 links to each other with absorption tower 10, the following outlet of first hydrochloric acid tank 7 reenters falling-film absorber 6 by recycle pump 3 parts, another part enters second hydrochloric acid tank 8, the upper outlet of second hydrochloric acid tank 8 links to each other with absorption tower 10, the following outlet of second hydrochloric acid tank 8 enters in the absorption tower 10 by recycle pump 3, the top outlet on absorption tower 10 links to each other with second vacuum pump 9, the following outlet on absorption tower 10 links to each other with second hydrochloric acid tank 8, the following outlet of second vacuum pump 9 links to each other with salt acid storage tank 4 by recycle pump 3, and the outlet of second vacuum pump, 9 tops links to each other with tail gas funnel 11.
In preparation olefin polymerization catalysis process, titanium tetrachloride is the active centre component, uses excessive titanium tetrachloride and handle the by product-titan-alkoxide in the reaction process in dealcoholysis activation and year titanium step, titanium tetrachloride uses as solvent, must be to its impurity elimination recycle and reuse of purifying.Higher because of it with some solvent oil boiling point, should adopt the rectification under vacuum method, cut down the consumption of energy, the vacuum unit of selecting for use is a water jet vacuum unit, unit water and the decomposition reaction of titanium tetrachloride noncondensable gas produce weakly acidic water, are thermopositive reaction, influence vacuum tightness because of reason water temperatures such as machinery can raise simultaneously, hydrochloric acid absorption tower adopts interchanger 1 to give first vacuum pump 2 vacuum unit water heat exchange just cooling, and its weakly acidic water is finally included absorption HCL process gas in and entered in the salt acid storage tank 4.
For a step reduces pollution to the greatest extent, increase packed absorber and further capture gas front and back differential pressure in HCL and the system, be provided with second vacuum pump 9 endways and be water jet vacuum unit, but one side extracting vacuum, also can play in addition the effect that absorbs HCL gas, this pressure maintains-0.001mpa～-0.0015mpa.
Hydrochloric trade effluent with hydrochloric acid absorption tower processing generates the technology of producing with hydrochloric acid, and its step is as follows:
After titanium tetrachloride solvent and the processing of inertia alkane solvent, the technology HCL gas of generation enters tail gas buffer 5, and the HCL process gas falls low gas velocity through surge tank and reaches 0.3m/s～1.0m/s; Technology HCL gas enters in the falling-film absorber 6 and the abundant absorbing enriched of technology salt sour water, enter then in first hydrochloric acid tank 7, the salt sour water in first hydrochloric acid tank 7 enters falling-film absorber 6 once more through recycle pump 3, carry out the absorption of hydrochloric acid repeatedly, concentration of hydrochloric acid reaches about 20%; First absorption technique salt sour water enters absorption tower 10 and carries out the secondary absorption, enters then in second hydrochloric acid tank 8, and the salt sour water in second hydrochloric acid tank 8 enters absorption tower 10 once more through recycle pump 3, carries out the absorption of hydrochloric acid repeatedly; After technology salt sour water that secondary absorbs reaches concentration and is 30%, enter salt acid storage tank 4 through second vacuum pump 9, the tail gas of trace is discharged from tail gas funnel 11 simultaneously.
Claims (2)
1. hydrochloric acid absorption tower, it is characterized in that: comprise interchanger (1), first vacuum pump (2), recycle pump (3), salt acid storage tank (4), tail gas buffer (5), falling-film absorber (6), first hydrochloric acid tank (7), second hydrochloric acid tank (8), second vacuum pump (9), absorption tower (10) and tail gas funnel (11) are formed, wherein the outlet of interchanger (1) bottom links to each other with first vacuum pump (2), the outlet on interchanger (1) top links to each other with salt acid storage tank (4), the following outlet of first vacuum pump (2) links to each other with salt acid storage tank (4) by recycle pump (3), the outlet of tail gas buffer (5) links to each other with falling-film absorber (6), the outlet of falling-film absorber (6) links to each other with first hydrochloric acid tank (7) respectively with the outlet of salt acid storage tank (4), another outlet of falling-film absorber (6) links to each other with absorption tower (10), the following outlet of first hydrochloric acid tank (7) reenters falling-film absorber (6) by recycle pump (a 3) part, another part enters second hydrochloric acid tank (8), the upper outlet of second hydrochloric acid tank (8) links to each other with absorption tower (10), the following outlet of second hydrochloric acid tank (8) enters in the absorption tower (10) by recycle pump (3), the top outlet on absorption tower (10) links to each other with second vacuum pump (9), the following outlet on absorption tower (10) links to each other with second hydrochloric acid tank (8), the following outlet of second vacuum pump (9) links to each other with salt acid storage tank (4) by recycle pump (3), and the outlet of second vacuum pump (9) top links to each other with tail gas funnel (11).
2. utilize hydrochloric trade effluent to generate the technology of producing with hydrochloric acid with the described hydrochloric acid absorption tower of claim 1, its step is as follows:
1) after the processing of titanium tetrachloride solvent and inertia alkane solvent, the technology HCL gas of generation enters tail gas buffer (5);
2) technology HCL gas enters in the falling-film absorber (6) and the abundant absorbing enriched of technology salt sour water, enter then in first hydrochloric acid tank (7), salt sour water in first hydrochloric acid tank (7) enters falling-film absorber (6) once more through recycle pump (3), carries out the absorption of hydrochloric acid repeatedly;
3) first absorption technique salt sour water enters absorption tower (10) and carries out secondary and absorb, and enters then in second hydrochloric acid tank (8), and the salt sour water in second hydrochloric acid tank (8) enters absorption tower (10) once more through recycle pump (3), carries out the absorption of hydrochloric acid repeatedly;
4) after technology salt sour water that secondary absorbs reaches concentration and is 30%, enter salt acid storage tank (4) through second vacuum pump (9), the tail gas of trace is discharged from tail gas funnel (11) simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102203071A CN101723327B (en) | 2009-12-01 | 2009-12-01 | Hydrochloric acid absorption tower and process for producing hydrochloric acid for production |
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| CN2009102203071A CN101723327B (en) | 2009-12-01 | 2009-12-01 | Hydrochloric acid absorption tower and process for producing hydrochloric acid for production |
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| CN101723327B CN101723327B (en) | 2011-06-08 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862586A (en) * | 2010-07-12 | 2010-10-20 | 江苏海鹏防腐设备有限公司 | System for industrial waste gas treatment and salt regeneration |
| CN102730640A (en) * | 2011-04-07 | 2012-10-17 | 上海达源环境科技工程有限公司 | Device for recovering hydrochloric acid from polysilicon exhaust gas and waste liquid |
| CN103318842A (en) * | 2013-06-20 | 2013-09-25 | 安徽海华科技股份有限公司 | HCL gas recycling process and HCL gas recycling device in gaseous phase chlorination reaction |
| CN105036081A (en) * | 2015-08-03 | 2015-11-11 | 昆明理工大学 | Method for producing HCl gas through chlorosilane residual liquor |
| CN106621427A (en) * | 2016-12-08 | 2017-05-10 | 张贵 | Cold evaporation purifying system for by-product hydrochloric acid |
| CN106861373A (en) * | 2017-03-30 | 2017-06-20 | 河北大景大搪化工设备有限公司 | A kind of hydrochloric acid groove tank automation absorbs the device of acid mist |
| CN110075669A (en) * | 2019-05-29 | 2019-08-02 | 湖南长宏新能源材料有限责任公司 | A kind of purification treatment of nonferrous smelting HCl exhaust gas and recycle technique |
| CN114452805A (en) * | 2022-02-09 | 2022-05-10 | 山西凯宇化工股份有限公司 | Second-stage absorption system of hydrochloric acid tower for chemical synthetic materials |
-
2009
- 2009-12-01 CN CN2009102203071A patent/CN101723327B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862586A (en) * | 2010-07-12 | 2010-10-20 | 江苏海鹏防腐设备有限公司 | System for industrial waste gas treatment and salt regeneration |
| CN101862586B (en) * | 2010-07-12 | 2012-03-07 | 江苏海鹏防腐设备有限公司 | System for industrial waste gas treatment and salt regeneration |
| CN102730640A (en) * | 2011-04-07 | 2012-10-17 | 上海达源环境科技工程有限公司 | Device for recovering hydrochloric acid from polysilicon exhaust gas and waste liquid |
| CN103318842A (en) * | 2013-06-20 | 2013-09-25 | 安徽海华科技股份有限公司 | HCL gas recycling process and HCL gas recycling device in gaseous phase chlorination reaction |
| CN105036081A (en) * | 2015-08-03 | 2015-11-11 | 昆明理工大学 | Method for producing HCl gas through chlorosilane residual liquor |
| CN106621427A (en) * | 2016-12-08 | 2017-05-10 | 张贵 | Cold evaporation purifying system for by-product hydrochloric acid |
| CN106861373A (en) * | 2017-03-30 | 2017-06-20 | 河北大景大搪化工设备有限公司 | A kind of hydrochloric acid groove tank automation absorbs the device of acid mist |
| CN110075669A (en) * | 2019-05-29 | 2019-08-02 | 湖南长宏新能源材料有限责任公司 | A kind of purification treatment of nonferrous smelting HCl exhaust gas and recycle technique |
| CN114452805A (en) * | 2022-02-09 | 2022-05-10 | 山西凯宇化工股份有限公司 | Second-stage absorption system of hydrochloric acid tower for chemical synthetic materials |
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| Publication number | Publication date |
|---|---|
| CN101723327B (en) | 2011-06-08 |
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Owner name: LIAONING DINGJIDE PETROCHEMICAL CO., LTD. Free format text: FORMER OWNER: ZHANG ZAIMING Effective date: 20110401 |
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Effective date of registration: 20110401 Address after: 115005 lime village, willow town, old border area, Yingkou, Liaoning Applicant after: Liaoning Dingjide Petrochemical Co., Ltd. Address before: 115005 lime village, willow town, old border area, Yingkou, Liaoning Applicant before: Zhang Zaiming |
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