CN105480947A - Alcohol-containing waste hydrochloric acid treatment apparatus and treatment technology thereof - Google Patents
Alcohol-containing waste hydrochloric acid treatment apparatus and treatment technology thereof Download PDFInfo
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- CN105480947A CN105480947A CN201510881530.6A CN201510881530A CN105480947A CN 105480947 A CN105480947 A CN 105480947A CN 201510881530 A CN201510881530 A CN 201510881530A CN 105480947 A CN105480947 A CN 105480947A
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- calcium chloride
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- stripper
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Abstract
The invention relates to an alcohol-containing waste hydrochloric acid treatment apparatus. The apparatus comprises a gasification tower, a stripper, a concentration device, a condensing and fractioning tower, a reuse pipeline and an absorption tower. The stripper is connected behind the gasification tower, the bottom of the stripper is connected with the concentration device, the top of the stripper is connected with the condensing and fractioning tower through a dry gas outlet, and the concentration device is connected with the concentrate liquid inlet of the body of the stripper through a pipeline. A treatment technology realized by using the apparatus comprises the following steps: the gasification tower heats a raw material solution to 100-145DEG C, a mixed gas flows out of the gasification tower and enters the stripper provided with a concentrated calcium chloride solution, and heating is carried out to absorb water; and most of hydrogen chloride and alcohols flow out of the top of the stripper, a dilute calcium chloride and dilute hydrochloric acid mixed solution flows out from the bottom of the stripper, and dilute calcium chloride enters the concentration device, and the diluted hydrochloric acid enters the reuse pipeline. The water content of the separated hydrogen chloride and alcohols is very low, and hydrogen chloride is almost completely recycled.
Description
Technical field
The present invention relates to the treatment process of a class waste hydrochloric acid.
Background technology
Use the difference of field, starting material and goods according to Iron And Steel Industry or chemical industry etc., usually containing other different compositions in waste hydrochloric acid, how they being recycled, turning waste into wealth, is the conventional difficulties in these industries.
Number of patent application be 2015102600048 invention provide a kind for the treatment of process of waste hydrochloric acid containing iron, the method comprises the steps: (1) by waste hydrochloric acid containing iron and enough iron filings react to the solute in solution be all ferrous salt iron protochloride; (2) solution of ferrous chloride step (1) obtained, through multi-step pressure reduction water distilling apparatus and the crystallization of single-stage pressure reducing distillation and concentration, obtains iron protochloride xln; (3) iron protochloride xln step (2) obtained is through calcined by rotary kiln, decompose and obtain hydrogen chloride gas, water vapor and ferric oxide solid, collect ferric oxide solid and obtain ferric oxide product, the mixed gas containing hydrogen chloride gas, water vapor, a small amount of ferric oxide dust and combustion tail gas is discharged; (4) mixed gas that step (3) obtains is cooled through interchanger, form hydrochloric acid drop.It is more that the method process consumes other raw material, technological process more complicated.
HCl recovery treatment process in number of patent application polyvinyl butyral acetal (PVB) factory effluent that has been the disclosure of the invention of 2014102923891, first in containing the factory effluent of hydrochloric acid, add the pH value > 6 of organic amine to system, make the organic amine added form corresponding organic amine salt hydrochlorate to the hydrochloric acid in waste water; After the described organic amine salt hydrochlorate in non-polar organic solvent extraction wastewater, removing organic solvent, is separated and obtains said organic amine salt hydrochlorate; Obtained organic amine salt hydrochlorate is placed in organic diluting solvent heat, described organic amine salt hydrochlorate is decomposed, the hydrogen chloride gas water discharged obtains hydrochloric acid soln after absorbing, with the organic amine after HCl separation by Separation and Recovery in organic thinner solution, the hydrochloric acid soln reclaimed and organic amine etc. have the solvent/reagent of utility value, can return recycle respectively.The method needs follow-up cumbersome separation and recycling.
To be the disclosure of the invention of 2015101327369 a kind of utilizes Industry Waste hydrochloric acid to produce system and the technique of Calcium Chloride Powder Anhydrous for number of patent application, the reactive system of this system is connected to vapo(u)rization system by smart calcium chloride e Foerderanlage, and vapo(u)rization system, calcium chloride forming machine, dehumidification system, finished product calcium chloride e Foerderanlage, finished product calcium chloride feed bin are connected successively; Reactive system and reaction end gas treatment system interconnection; Essence calcium chloride e Foerderanlage is also connected with dried tail gas washing device, and the outlet side of dehumidification system is connected to vapo(u)rization system inlet end by dried tail gas washing device.The hydrochloric acid of this invention can only be converted into calcium chloride, can not as other purposes, function singleness.
Goal of the invention:
The invention provides a kind of abundant recovery be separated effective constituent in waste hydrochloric acid, supplementary material recycle containing the treatment facility of alcohol waste hydrochloric acid and treatment process thereof.
Technical scheme:
Treatment facility containing alcohol waste hydrochloric acid provided by the invention, has gasification tower, Analytic Tower, concentration unit, condensation separation column, separately can have reuse pipeline, absorption tower.
Gasification tower is equipped with the material solution entrance of side, the gaseous state on top exports, the heating unit of tower wall.
This concentration of 38-48%(is provided with in advance close to saturated solution even supersaturation in Analytic Tower, water-retaining capacity is stronger) the calcium chloride strong solution of concentration, Analytic Tower is equipped with mixture export at the bottom of peripheral tower body heating unit, mixed gas entrance, the outlet of tower top dry gas, concentration liquid entrance, tower.
Concentration unit has the outlet of dense calcium chloride, dilute hydrochloric acid outlet.
Condensation separation column is equipped with that the hydrogen chloride gas on top exports, the outlet of the alcohols liquid fractionation of bottom.
Raw material enters gasification tower from material solution entrance; The gaseous state on top exports UNICOM and deliver a gas to mixed gas entrance; Ta Di mixture export UNICOM also carries mixed solution to concentration unit; Dense calcium chloride outlet UNICOM calcium chloride solution after carrying concentrate are to concentration liquid entrance; Dilute hydrochloric acid outlet UNICOM and by reuse Pipeline transport dilute hydrochloric acid to absorption tower, go absorbing hydrogen chloride or and alcohols, become a part for material solution; Dry gas outlet UNICOM also carries dried hydrogenchloride and alcohols gas to condensation separation column.
During work, there is following technological process:
1) material solution (containing 1-12% alcohols, waste hydrochloric acid solution containing 10-31%HCL) enters gasification tower from material solution entrance, tower wall heating unit is heated to 100-145 DEG C (ensureing that most hydrogenchloride and alcohols and the gasification of part steam flow out) to gasification tower, and the mixed gas of hydrogenchloride, alcohols and part steam is flowed out in gaseous state outlet;
2) mixed gas enters Analytic Tower from mixed gas entrance, tower body heating unit heats to Analytic Tower inside calcium chloride strong solution, Heating temperature 50-90 DEG C of (preferred 70-80 DEG C, this temperature is while moisture is fully absorbed, moisture evaporates hardly, and hydrogenchloride and alcohols almost all rise outflow), steam and a small amount of hydrogenchloride are chlorinated calcium strong solution and absorb, major part hydrogenchloride and alcohols flow out from dry gas outlet, and mixture export at the bottom of tower flows out rare calcium chloride and dilute hydrochloric acid mixing solutions.
3) mixing solutions enters concentration unit concentrate, and denseer calcium chloride solution flows out from dense calcium chloride outlet, returns Analytic Tower reuse from concentration liquid entrance; The dilute hydrochloric acid that dilute hydrochloric acid exports about about 1% of outflow enters reuse pipeline;
4) dilute hydrochloric acid in reuse pipeline, returns to absorption tower, absorbing hydrogen chloride and alcohols gas, forms material solution, then flows into material solution entrance.
5) dry gas outlet effluent air enters condensation separation column, the condensing temperature condensation liquefaction that alcohols is suitable, and hydrogenchloride is still gas, realizes being separated.
Beneficial effect:
The present invention can fully reclaim HCl and alcohols, the almost zero release of effective raw material, and intermediate medium recycles, and fully saves and utilizes resource, does not have new pollution to produce and discharge.Equipment unit is less, simple for structure, and flow process is short, takes up room less, install, safeguard all very convenient.Technological temperature is arranged accurately rationally, and the temperature of gasification, absorption, fractionation etc. are all very suitable, and neither waste thermal source, have the processing efficiency making waste hydrochloric acid high, each component separating is thorough fast.
Accompanying drawing illustrates:
Accompanying drawing 1 is a structural representation of the present invention;
In figure, 1-absorption tower; 2-reuse pipeline; 3-dilute hydrochloric acid exports; 4-concentration unit; The dense calcium chloride outlet of 5-; 6-material solution entrance; 7-gasifies tower; The gaseous state outlet of 8-top; 9-tower wall heating unit; 10-mixed gas entrance; 11-Analytic Tower; 12-dry gas exports; 13-mixture export; 14-entry to mixed solution; 15-tower body heating unit; 16-concentration liquid entrance; 17-condensation separation column entrance; 18-hydrogen chloride gas exports; 19-alcohols liquid fractionation exports; 20-condensation separation column.
Embodiment:
As shown in drawings containing the treatment facility of alcohol waste hydrochloric acid, there is gasification tower 7, Analytic Tower 11, concentration unit 4, condensation separation column 20, reuse pipeline 2, absorption tower 1.
Gasification tower is equipped with the outlet of material solution entrance, top gaseous state, tower wall heating unit; The calcium chloride strong solution of built-in 40%-45% concentration in Analytic Tower, is equipped with mixture export at the bottom of the outlet of peripheral tower body heating unit, mixed gas entrance, tower top dry gas, concentration liquid entrance, tower; Concentration unit is equipped with the outlet of entry to mixed solution, dense calcium chloride, dilute hydrochloric acid outlet; Condensation separation column is equipped with hydrogen chloride gas outlet, the outlet of alcohols liquid fractionation.
During this equipment work:
1) material solution is from entering gasification tower, and tower wall heating unit is heated to 120-130 DEG C to gasification tower, and the mixed gas of hydrogenchloride, alcohols and part steam is flowed out in gaseous state outlet;
2) then, mixed gas enters Analytic Tower, tower body heating unit heats to Analytic Tower inside calcium chloride strong solution, Heating temperature 50-80 DEG C, steam and a small amount of hydrogenchloride are chlorinated calcium strong solution and absorb, major part hydrogenchloride and alcohols flow out from dry gas outlet, and mixture export at the bottom of tower flows out rare calcium chloride and dilute hydrochloric acid mixing solutions.
3) then, mixing solutions enters concentration unit concentrate, and denseer calcium chloride solution flows out from dense calcium chloride outlet, returns Analytic Tower reuse from concentration liquid entrance; The dilute hydrochloric acid of about 1% enters reuse pipeline; Dilute hydrochloric acid in reuse pipeline returns to absorption tower, for absorbing hydrogen chloride or alcohols gas, forms material solution, then flows into material solution entrance.
4) last, dry gas outlet effluent air enters condensation separation column, the condensing temperature condensation liquefaction that alcohols is suitable, and hydrogenchloride is still gas, realizes being separated.
Claims (4)
1. the treatment facility containing alcohol waste hydrochloric acid, it is characterized in that: there is gasification tower, Analytic Tower, concentration unit, condensation separation column, gasification tower is equipped with material solution entrance, top gaseous state outlet, tower wall heating unit, the calcium chloride strong solution of built-in 38-48% concentration in Analytic Tower, be configured with the heating unit of peripheral tower body, mixed gas entrance, tower top dry gas exports, concentration liquid entrance, mixture export at the bottom of tower, concentration unit is equipped with entry to mixed solution, dense calcium chloride outlet, dilute hydrochloric acid exports, condensation separation column is equipped with hydrogen chloride gas to export, alcohols liquid fractionation exports, raw material enters gasification tower from material solution entrance, top gaseous state outlet UNICOM mixed gas entrance, dry gas outlet UNICOM condensation separation column, the entry to mixed solution of Ta Di mixture export UNICOM concentration unit, dense calcium chloride outlet UNICOM concentration liquid entrance.
2. the treatment facility containing alcohol waste hydrochloric acid as claimed in claim 1, is characterized in that: separately can have reuse pipeline, absorption tower, and dilute hydrochloric acid exports by reuse pipeline UNICOM absorption tower, the material solution UNICOM material solution entrance that absorption tower is formed.
3. containing a treatment process for alcohol waste hydrochloric acid, it is characterized in that: adopt the treatment facility containing alcohol waste hydrochloric acid according to claim 1, there is following technological process:
1) material solution enters gasification tower from described material solution entrance, and tower wall heating unit is heated to 100-145 DEG C to gasification tower, and the mixed gas of hydrogenchloride, alcohols and part steam is flowed out in gaseous state outlet;
2) mixed gas enters Analytic Tower from described mixed gas entrance, tower body heating unit heats to Analytic Tower inside calcium chloride strong solution, Heating temperature 50-90 DEG C, steam and a small amount of hydrogenchloride are chlorinated calcium strong solution and absorb, major part hydrogenchloride and alcohols flow out from dry gas outlet, and mixture export at the bottom of tower flows out rare calcium chloride and dilute hydrochloric acid mixing solutions.
3) mixing solutions enters described concentration unit concentrate, and denseer calcium chloride solution flows out from dense calcium chloride outlet, returns Analytic Tower reuse from concentration liquid entrance;
4) the dry gas outlet effluent air described in enters condensation separation column, the condensing temperature condensation liquefaction that alcohols is suitable, and hydrogenchloride is still gas, realizes being separated.
4. the treatment process containing alcohol waste hydrochloric acid as claimed in claim 3, is characterized in that: the dilute hydrochloric acid that described dilute hydrochloric acid exports about 1% of outflow can enter reuse pipeline; Dilute hydrochloric acid in described reuse pipeline returns to absorption tower, for absorbing hydrogen chloride or alcohols gas, forms material solution, then flows into material solution entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881530.6A CN105480947A (en) | 2015-12-07 | 2015-12-07 | Alcohol-containing waste hydrochloric acid treatment apparatus and treatment technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510881530.6A CN105480947A (en) | 2015-12-07 | 2015-12-07 | Alcohol-containing waste hydrochloric acid treatment apparatus and treatment technology thereof |
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| CN105480947A true CN105480947A (en) | 2016-04-13 |
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| CN201510881530.6A Pending CN105480947A (en) | 2015-12-07 | 2015-12-07 | Alcohol-containing waste hydrochloric acid treatment apparatus and treatment technology thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836708A (en) * | 2016-06-15 | 2016-08-10 | 中建安装工程有限公司 | Device and method for separating and purifying HCl by utilizing novel structured packing |
| CN111847383A (en) * | 2020-09-02 | 2020-10-30 | 南通山剑防腐科技有限公司 | Full-resolution process for treating impurity-containing byproduct hydrochloric acid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081693A (en) * | 2007-06-29 | 2007-12-05 | 杭州中昊科技有限公司 | Complete recovering technique for hydrochloride in industrial gas |
| CN101214923A (en) * | 2008-01-04 | 2008-07-09 | 新疆天业（集团）有限公司 | Combined absorption analytical method for hydrochloric acid |
| US20100092373A1 (en) * | 2008-10-15 | 2010-04-15 | Bayer Materialscience Ag | Processes for Removing Carbon Monoxide from a Crude HCl Gas, and HCl Oxidation Processes Using Purified HCl Gas Obtained Thereby |
| CN204237555U (en) * | 2014-10-23 | 2015-04-01 | 浙江富士特集团有限公司 | A kind of drying installation of hydrogen chloride gas |
-
2015
- 2015-12-07 CN CN201510881530.6A patent/CN105480947A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081693A (en) * | 2007-06-29 | 2007-12-05 | 杭州中昊科技有限公司 | Complete recovering technique for hydrochloride in industrial gas |
| CN101214923A (en) * | 2008-01-04 | 2008-07-09 | 新疆天业（集团）有限公司 | Combined absorption analytical method for hydrochloric acid |
| US20100092373A1 (en) * | 2008-10-15 | 2010-04-15 | Bayer Materialscience Ag | Processes for Removing Carbon Monoxide from a Crude HCl Gas, and HCl Oxidation Processes Using Purified HCl Gas Obtained Thereby |
| CN204237555U (en) * | 2014-10-23 | 2015-04-01 | 浙江富士特集团有限公司 | A kind of drying installation of hydrogen chloride gas |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836708A (en) * | 2016-06-15 | 2016-08-10 | 中建安装工程有限公司 | Device and method for separating and purifying HCl by utilizing novel structured packing |
| CN111847383A (en) * | 2020-09-02 | 2020-10-30 | 南通山剑防腐科技有限公司 | Full-resolution process for treating impurity-containing byproduct hydrochloric acid |
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Application publication date: 20160413 |