CN204502734U - A kind of monoxone device for recovering tail gas - Google Patents
A kind of monoxone device for recovering tail gas Download PDFInfo
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- CN204502734U CN204502734U CN201520137511.8U CN201520137511U CN204502734U CN 204502734 U CN204502734 U CN 204502734U CN 201520137511 U CN201520137511 U CN 201520137511U CN 204502734 U CN204502734 U CN 204502734U
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Abstract
The utility model discloses a kind of monoxone device for recovering tail gas, it comprises acetic acid recovery part, HCl recovery part, tail gas clean-up part and control system.The utility model is conducive to saving demineralized water consumption, continuous extraction hydrochloric acid reduces the pressure of system, and can reach desirable recovering effect, reduces the amount of labour of operator, save a large amount of manpowers, and ensure that continuous, stable, the safe operation of whole device.
Description
Technical field
The utility model relates to a kind of monoxone device for recovering tail gas.
Background technology
Monoxone is a kind of important organic fine industrial chemicals, is all widely used in agricultural chemicals, medicine and other fields, and its demand also presents the trend of sustainable growth always.The sulphur that adopts as catalyst more at present, acetic acid and chlorine reaction produce monoxone, this production method produces a large amount of acid tail gas (about containing HCl 95%, acetic acid 3%, sulfur dioxide 2%), if directly discharge also can be both waste to raw material resources to environment, therefore need just can discharge after process is reclaimed.Existing monoxone device for recovering tail gas is that monoxone tail gas carries out bubble absorption through two-stage acetic acid recovery tank, and then carries out absorption by Hydrochloric Acid through multi-stage falling-film absorption tower, the extraction of hydrochloric acid interval.Existing method complex operation, absorbs resistance large, easily cause system pressure excessive and produce security incident, and organic efficiency is undesirable.
Utility model content
The purpose of this utility model is for above present situation, provides a kind of automated control operation and the good monoxone device for recovering tail gas of recovering effect.
The utility model adopts following technical scheme:
A kind of monoxone device for recovering tail gas, it comprises acetic acid recovery part, HCl recovery part, tail gas clean-up part and control system;
Described acetic acid recovery part comprise connect successively one-level acetic acid absorption tower, secondary acetic acid absorption tower and three grades of acetic acid absorption towers, last person's air pipe in monoxone workshop is connected with the charging aperture on one-level acetic acid absorption tower, the tower bottoms circulating pump on one-level acetic acid absorption tower is delivered to tower top and carries out spray-absorption, the tower top gas outlet on one-level acetic acid absorption tower connects the charging aperture on secondary acetic acid absorption tower, the tower bottoms circulating pump on secondary acetic acid absorption tower is delivered to tower top and carries out spray-absorption, the tower top gas outlet on secondary acetic acid absorption tower connect the first condenser-, first condenser-connection gas-liquid separator, the gas outlet of gas-liquid separator connects the charging aperture on three grades of acetic acid absorption towers, the liquid outlet of gas-liquid separator connects the tower reactor inlet on secondary acetic acid absorption tower, the tower reactor on three grades of acetic acid absorption towers connects the tower reactor on secondary acetic acid absorption tower, the tower reactor on secondary acetic acid absorption tower connects the tower reactor on one-level acetic acid absorption tower, the tower reactor discharging reuse on one-level acetic acid absorption tower is to chloroacetate reaction device, this discharging pipeline and acetic acid extraction line,
Described HCl recovery part comprises one-level hydrochloric acid absorption tower and secondary Alcaine falling film absorbing tower and secondary absorption by Hydrochloric Acid tank, the tower top gas outlet on three grades of acetic acid absorption towers connects the charging aperture of one-level hydrochloric acid absorption tower, the bottom discharge of one-level hydrochloric acid absorption tower is divided into two-way, the first via is connected with hydrochloric acid tank, i.e. hydrochloric acid extraction line, second tunnel is connected with the tower reactor on three grades of acetic acid absorption towers, the tower top gas outlet of one-level hydrochloric acid absorption tower connects the charging aperture of secondary Alcaine falling film absorbing tower, the liquid in-out mouth of secondary Alcaine falling film absorbing tower connects the charging aperture of secondary absorption by Hydrochloric Acid tank, the tower bottoms of secondary absorption by Hydrochloric Acid tank carries out cyclic absorption through circulating pump in secondary Alcaine falling film absorbing tower and secondary absorption by Hydrochloric Acid tank, the gas outlet, top of secondary absorption by Hydrochloric Acid tank is communicated with the outlet pipe of secondary Alcaine falling film absorbing tower,
Described tail gas clean-up part comprises one-level tail gas purification tower, secondary tail gas purification tower and Alkali absorption tower, the tower bottoms of three is all delivered to tower top by circulating pump and carries out spray-absorption, the charging aperture of one-level tail gas purification tower is connected with the gas outlet, bottom of secondary Alcaine falling film absorbing tower, the bottom liquid inlet mouth of one-level tail gas purification tower is connected with a water treatment tank, the tower reactor of one-level tail gas purification tower and the tower reactor of secondary tail gas purification tower pass through pipeline connection, the tower top gas outlet of one-level tail gas purification tower is connected with the charging aperture of secondary tail gas purification tower, the bottom liquid outlet of secondary tail gas purification tower is connected with the bottom of secondary absorption by Hydrochloric Acid tank, the tower top gas outlet of secondary tail gas purification tower is connected with the charging aperture of Alkali absorption tower, the tower overhead gas of Alkali absorption tower is emptying,
Described control system comprises controller, liquid level sensor, density sensor, feed liquor control valve, hydrochloric acid extraction control valve and acetic acid extraction control valve, wherein liquid level sensor is separately positioned on one-level acetic acid absorption tower, secondary acetic acid absorption tower, three grades of acetic acid absorption towers, one-level hydrochloric acid absorption tower, secondary absorption by Hydrochloric Acid tank, one-level tail gas purification tower, in secondary tail gas purification tower and a water treatment tank, density sensor is arranged in one-level hydrochloric acid absorption tower, feed liquor control valve is separately positioned on one-level acetic acid absorption tower, secondary acetic acid absorption tower, three grades of acetic acid absorption towers, one-level hydrochloric acid absorption tower, secondary absorption by Hydrochloric Acid tank, one-level tail gas purification tower, in the water influent pipeline of secondary tail gas purification tower and a water treatment tank, hydrochloric acid extraction control valve is arranged on hydrochloric acid extraction line, acetic acid extraction control valve is arranged on acetic acid extraction line, the output of described liquid level sensor and density sensor connects the respective input of controller respectively, and the control input end of described feed liquor control valve, hydrochloric acid extraction control valve and acetic acid extraction control valve connects the corresponding control output end of controller respectively.
In the utility model, first demineralized water absorbing liquid enters tail gas absorption part, the tail gas that absorption acetic acid recovery part and HCl recovery part do not absorb completely, and then enter HCl recovery part, to absorb the higher hydrogen chloride gas of relative solubility, finally enter acetic acid recovery part, now absorbing liquid concentration reaches higher concentration, but because acetic acid and water can dissolve each other with arbitrary proportion, therefore the absorbing liquid of higher concentration also can realize the effect absorbing acetic acid preferably, absorption order of the present invention is conducive to saving demineralized water consumption, continuous extraction hydrochloric acid reduces the pressure of system, and desirable recovering effect can be reached.The utility model monitors the situation on each absorption tower in real time by control system, achieve the full-automation of absorbing liquid fluid infusion and the extraction of recovery product, automatic liquid supply when liquid level is too low in absorption tower, automatic extraction when regenerant reaches recovery index, reduce the amount of labour of operator, save a large amount of manpowers, and ensure that continuous, stable, the safe operation of whole device.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In the accompanying drawings: 1 one-level acetic acid absorption tower, 2 secondary acetic acid absorption towers, 3 three grades of acetic acid absorption towers, 4 monoxone workshops, 5-1 first condenser, 5-2 second condenser, 5-3 the 3rd condenser, 5-4 the 4th condenser, 5-5 the 5th condenser, 6 gas-liquid separators, 7 chloroacetate reaction devices, 8 one-level hydrochloric acid absorption towers, 9 secondary absorption by Hydrochloric Acid tanks, 10 hydrochloric acid tanks, 11 secondary Alcaine falling film absorbing towers, 12 one-level tail gas purification towers, 13 secondary tail gas purification towers, 14 Alkali absorption towers, 15 water treatment tank, 16 controllers, 17 liquid level sensors, 18 density sensors, 19 acetic acid extraction control valves, 20 feed liquor control valves, 21 hydrochloric acid extraction control valves.
Detailed description of the invention
As shown in Figure 1, the utility model comprises acetic acid recovery part, HCl recovery part, tail gas clean-up part and control system;
Described acetic acid recovery part comprise connect successively one-level acetic acid absorption tower 1, secondary acetic acid absorption tower 2 and three grades of acetic acid absorption towers 3, last person's air pipe in monoxone workshop 4 is connected with the charging aperture on one-level acetic acid absorption tower 1, the tower bottoms circulating pump on one-level acetic acid absorption tower 1 is delivered to tower top and carries out spray-absorption, the tower top gas outlet on one-level acetic acid absorption tower 1 connects the charging aperture on secondary acetic acid absorption tower 2, the tower bottoms circulating pump on secondary acetic acid absorption tower 2 is delivered to tower top and carries out spray-absorption, the tower top gas outlet on secondary acetic acid absorption tower 2 connects the first condenser 5-1, first condenser 5-1 connects gas-liquid separator 6, the gas outlet of gas-liquid separator 6 connects the charging aperture on three grades of acetic acid absorption towers 3, the liquid outlet of gas-liquid separator 6 connects the tower reactor inlet on secondary acetic acid absorption tower 2, the tower reactor on three grades of acetic acid absorption towers 3 connects the tower reactor on secondary acetic acid absorption tower 2, the tower reactor on secondary acetic acid absorption tower 2 connects the tower reactor on one-level acetic acid absorption tower 1, the tower reactor discharging reuse on one-level acetic acid absorption tower 1 is to chloroacetate reaction device 7, this discharging pipeline and acetic acid extraction line.
Described HCl recovery part comprises one-level hydrochloric acid absorption tower 8 and secondary Alcaine falling film absorbing tower 11 and secondary absorption by Hydrochloric Acid tank 9; The tower top gas outlet on three grades of acetic acid absorption towers 3 connects the charging aperture of one-level hydrochloric acid absorption tower 8, the tower bottoms of one-level hydrochloric acid absorption tower 8 is through circulating pump and the first condenser 5-1, be delivered to tower top and carry out spray-absorption, the self-circulation pipeline of one band condenser (i.e. the second condenser 5-2 and the 3rd condenser 5-3) respectively can be set in its tower reactor both sides, can be interconnected between two self-circulation pipeline.The bottom discharge of one-level hydrochloric acid absorption tower 8 is divided into two-way, the first via is connected with hydrochloric acid tank 10, i.e. hydrochloric acid extraction line, second tunnel is connected with the tower reactor on three grades of acetic acid absorption towers 3, the tower top gas outlet of one-level hydrochloric acid absorption tower 8 connects the charging aperture of secondary Alcaine falling film absorbing tower 11, the liquid in-out mouth of secondary Alcaine falling film absorbing tower 11 connects the charging aperture of secondary absorption by Hydrochloric Acid tank 9, the tower bottoms of secondary absorption by Hydrochloric Acid tank 9 carries out cyclic absorption through circulating pump in secondary Alcaine falling film absorbing tower 11 and secondary absorption by Hydrochloric Acid tank 9, the gas outlet, top of secondary absorption by Hydrochloric Acid tank 9 is communicated with the outlet pipe of secondary Alcaine falling film absorbing tower 11.
Described tail gas clean-up part comprises one-level tail gas purification tower 12, secondary tail gas purification tower 13 and Alkali absorption tower 14, the tower bottoms of three is all delivered to tower top by circulating pump and carries out spray-absorption, and the tower bottoms of one-level tail gas purification tower 12 and secondary tail gas purification tower 13 enters before tower top sprays and first can carry out condensation through the 4th condenser 5-4 and the 5th condenser 5-5 respectively.The charging aperture of one-level tail gas purification tower 12 is connected with the gas outlet, bottom of secondary Alcaine falling film absorbing tower 11, the bottom liquid inlet mouth of one-level tail gas purification tower 12 is connected with a water treatment tank 15, the tower reactor of one-level tail gas purification tower 12 and the tower reactor of secondary tail gas purification tower 13 pass through pipeline connection, the tower top gas outlet of one-level tail gas purification tower 12 is connected with the charging aperture of secondary tail gas purification tower 13, the bottom liquid outlet of secondary tail gas purification tower 13 is connected with the bottom of secondary absorption by Hydrochloric Acid tank 9, the tower top gas outlet of secondary tail gas purification tower 13 is connected with the charging aperture of Alkali absorption tower 14, the tower overhead gas of Alkali absorption tower is emptying,
Described control system comprises controller 16, liquid level sensor 17, density sensor 18, feed liquor control valve 20, hydrochloric acid extraction control valve 21 and acetic acid extraction control valve 22, wherein liquid level sensor 17 is separately positioned on one-level acetic acid absorption tower 1, secondary acetic acid absorption tower 2, three grades of acetic acid absorption towers 3, one-level hydrochloric acid absorption tower 8, secondary absorption by Hydrochloric Acid tank 9, one-level tail gas purification tower 12, in secondary tail gas purification tower 13 and a water treatment tank 15, density sensor 18 is arranged in one-level hydrochloric acid absorption tower 8, feed liquor control valve 20 is separately positioned on one-level acetic acid absorption tower 1, secondary acetic acid absorption tower 2, three grades of acetic acid absorption towers 3, one-level hydrochloric acid absorption tower 8, secondary absorption by Hydrochloric Acid tank 9, one-level tail gas purification tower 12, in the water influent pipeline of secondary tail gas purification tower 13 and a water treatment tank 15, hydrochloric acid extraction control valve 21 is arranged on hydrochloric acid extraction line, acetic acid extraction control valve 22 is arranged on acetic acid extraction line, the output of described liquid level sensor 17 and density sensor 17 connects the respective input of controller 16 respectively, and the control input end of described feed liquor control valve 20, hydrochloric acid extraction control valve 21 and acetic acid extraction control valve 19 connects the corresponding control output end of controller 16 respectively.
Technological process of the present utility model is as follows:
1, tail gas trend:
From the monoxone tail gas in monoxone workshop (containing HCl 95%, acetic acid 3%, sulfur dioxide 2%) enter one-level acetic acid absorption tower 1, utilize circulating pump that tower reactor solution is delivered to tower top to spray, tail gas after absorption enters secondary acetic acid absorption tower 2, proceed acetic acid under normal pressure to absorb, absorbing liquid is delivered to tower top with circulating pump equally and carries out spray-absorption; Tail gas enters condenser 5 from secondary acetic acid absorption tower 2 tower top and carries out condensation, then carries out gas-liquid separation through gas-liquid separator 6, and liquid backflow is to secondary acetic acid absorption tower 2 tower reactor, and gas enters three grades of acetic acid absorption towers 3 and carries out third time absorption; From three grades of acetic acid absorption towers 3, tail gas main component is out HCl, acetic acid is all absorbed, tail gas enters one-level hydrochloric acid absorption tower 8, with circulating pump, tower bottoms is delivered to tower top, and spray after condenser condenses, overhead gas continues to enter secondary absorption by Hydrochloric Acid tank 9 and absorbs, gas after absorption enters one-level tail gas purification tower 12 and absorbs organic principle in tail gas, tail gas after purification enters secondary tail gas purification tower 13 and again absorbs, after absorbing, tower top emptying gas enters alkali liquor absorption tower 14 again, finally emptying after alkali cleaning.
Absorbing liquid moves towards: one time water enters a water treatment tank 15, after softening, enter one-level tail gas purification tower 12, secondary tail gas purification tower 13, secondary absorption by Hydrochloric Acid tank 9, one-level hydrochloric acid absorption tower 8, three grades of acetic acid absorption towers 3, secondary acetic acid absorption tower 2, one-level acetic acid absorption tower 1 successively.
The operation principle of the utility model control system is as follows: when the liquid level in one-level acetic acid absorption tower 1 is lower than setting value, control signal is exported to the feed liquor control valve 20 between one-level acetic acid absorption tower 1 and secondary acetic acid absorption tower 2 tower reactor by controller 16, feed liquor control valve 20 performs opening action gradually, by secondary acetic acid absorption tower 2 to absorption tower 1 fluid infusion of one-level acetic acid, until liquid level reaches setting value; If liquid level is higher than setting value, controller 16 controls feed liquor control valve 20 and performs closing motion gradually, until liquid level reaches setting value.In like manner, when the liquid level in secondary acetic acid absorption tower 2 is lower than setting value, the feed liquor control valve 20 that controller 16 controls between secondary acetic acid absorption tower 2 and three grades of acetic acid absorption tower 3 tower reactors performs opening action gradually, by three grades of acetic acid absorption towers 3 to absorption tower 2 fluid infusion of secondary acetic acid; According to absorbing liquid trend by that analogy, finally when the liquid level in a water treatment tank 15 is lower than setting value, the feed liquor control valve 20 that controller 16 controls in a water water influent pipeline performs opening action gradually, in a water treatment tank 15, carry out fluid infusion.
The control procedure of controller to other feed liquor control valves is identical with said process, does not repeat them here.
Density sensor 18 in one-level hydrochloric acid absorption tower 8 by density data input control device 16, when the solution density in one-level hydrochloric acid absorption tower 8 is higher than setting value (1.16g/m
3, 25 DEG C) time, the hydrochloric acid extraction control valve 21 that controller 16 controls on hydrochloric acid extraction line performs opening action gradually, by hydrochloric acid solution extraction, until density reaches setting value; When the solution density in one-level hydrochloric acid absorption tower 8 is lower than setting value (1.16g/m
3, 25 DEG C) time, the hydrochloric acid extraction control valve 21 that controller 16 controls on hydrochloric acid extraction line performs closing motion, and stop hydrochloric acid solution extraction, absorbing liquid continues cyclic absorption in one-level hydrochloric acid absorption tower 8, until density reaches setting value.
Sampling detects the moisture in the absorbing liquid on one-level acetic acid absorption tower 1, if after reaching setting value (2%), manual operation controller 16, control acetic acid extraction control valve 19 and open, acetic acid extraction reuse is to monoxone workshop 4.
Claims (1)
1. a monoxone device for recovering tail gas, is characterized in that: it comprises acetic acid recovery part, HCl recovery part, tail gas clean-up part and control system;
Described acetic acid recovery part comprise connect successively one-level acetic acid absorption tower (1), secondary acetic acid absorption tower (2) and three grades of acetic acid absorption towers (3), last person's air pipe in monoxone workshop (4) is connected with the charging aperture on one-level acetic acid absorption tower (1), the tower bottoms circulating pump on one-level acetic acid absorption tower (1) is delivered to tower top and carries out spray-absorption, the tower top gas outlet on one-level acetic acid absorption tower (1) connects the charging aperture on secondary acetic acid absorption tower (2), the tower bottoms circulating pump on secondary acetic acid absorption tower (2) is delivered to tower top and carries out spray-absorption, the tower top gas outlet on secondary acetic acid absorption tower (2) connects the first condenser (5-1), first condenser (5-1) connects gas-liquid separator (6), the gas outlet of gas-liquid separator (6) connects the charging aperture of three grades of acetic acid absorption towers (3), the liquid outlet of gas-liquid separator (6) connects the tower reactor inlet on secondary acetic acid absorption tower (2), the tower reactor of three grades of acetic acid absorption towers (3) connects the tower reactor on secondary acetic acid absorption tower (2), the tower reactor on secondary acetic acid absorption tower (2) connects the tower reactor on one-level acetic acid absorption tower (1), the tower reactor discharging reuse on one-level acetic acid absorption tower (1) is to chloroacetate reaction device (7), this discharging pipeline and acetic acid extraction line,
Described HCl recovery part comprises one-level hydrochloric acid absorption tower (8), secondary Alcaine falling film absorbing tower (11) and secondary absorption by Hydrochloric Acid tank (9), the tower top gas outlet of three grades of acetic acid absorption towers (3) connects the charging aperture of one-level hydrochloric acid absorption tower (8), the bottom discharge of one-level hydrochloric acid absorption tower (8) is divided into two-way, the first via is connected with hydrochloric acid tank (10), i.e. hydrochloric acid extraction line, second tunnel is connected with the tower reactor of three grades of acetic acid absorption towers (3), the tower top gas outlet of one-level hydrochloric acid absorption tower (8) connects the charging aperture of secondary Alcaine falling film absorbing tower (11), the liquid outlet of secondary Alcaine falling film absorbing tower (11) connects the charging aperture of secondary absorption by Hydrochloric Acid tank (9), the tower bottoms of secondary absorption by Hydrochloric Acid tank (9) carries out cyclic absorption through circulating pump in secondary Alcaine falling film absorbing tower (11) and secondary absorption by Hydrochloric Acid tank (9), the gas outlet, top of secondary absorption by Hydrochloric Acid tank (9) is communicated with the outlet pipe of secondary Alcaine falling film absorbing tower (11),
Described tail gas clean-up part comprises one-level tail gas purification tower (12), secondary tail gas purification tower (13) and Alkali absorption tower (14), the tower bottoms of three is all delivered to tower top by circulating pump and carries out spray-absorption, the charging aperture of one-level tail gas purification tower (12) is connected with the outlet pipe of secondary Alcaine falling film absorbing tower (11) bottom, the bottom liquid inlet mouth of one-level tail gas purification tower (12) is connected with a water treatment tank (15), the tower reactor of one-level tail gas purification tower (12) and the tower reactor of secondary tail gas purification tower (13) pass through pipeline connection, the tower top gas outlet of one-level tail gas purification tower (12) is connected with the charging aperture of secondary tail gas purification tower (13), the bottom liquid outlet of secondary tail gas purification tower (13) is connected with the bottom of secondary absorption by Hydrochloric Acid tank (9), the tower top gas outlet of secondary tail gas purification tower (13) is connected with the charging aperture of Alkali absorption tower (14), the tower overhead gas of Alkali absorption tower is emptying,
Described control system comprises controller (16), liquid level sensor (17), density sensor (18), feed liquor control valve (20), hydrochloric acid extraction control valve (21) and acetic acid extraction control valve (22), wherein liquid level sensor (17) is separately positioned on one-level acetic acid absorption tower (1), secondary acetic acid absorption tower (2), three grades of acetic acid absorption towers (3), one-level hydrochloric acid absorption tower (8), secondary absorption by Hydrochloric Acid tank (9), one-level tail gas purification tower (12), in secondary tail gas purification tower (13) and a water treatment tank (15), density sensor (18) is arranged in one-level hydrochloric acid absorption tower (8), feed liquor control valve (20) is separately positioned on one-level acetic acid absorption tower (1), secondary acetic acid absorption tower (2), three grades of acetic acid absorption towers (3), one-level hydrochloric acid absorption tower (8), secondary absorption by Hydrochloric Acid tank (9), one-level tail gas purification tower (12), in the water influent pipeline of secondary tail gas purification tower (13) and a water treatment tank (15), hydrochloric acid extraction control valve (21) is arranged on hydrochloric acid extraction line, acetic acid extraction control valve (22) is arranged on acetic acid extraction line, the output of described liquid level sensor (17) and density sensor (17) connects the respective input of controller (16) respectively, and the control input end of described feed liquor control valve (20), hydrochloric acid extraction control valve (21) and acetic acid extraction control valve (19) connects the corresponding control output end of controller (16) respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520137511.8U CN204502734U (en) | 2015-03-11 | 2015-03-11 | A kind of monoxone device for recovering tail gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520137511.8U CN204502734U (en) | 2015-03-11 | 2015-03-11 | A kind of monoxone device for recovering tail gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366747A (en) * | 2015-11-27 | 2016-03-02 | 昆山市千灯三废净化有限公司 | Resource-converting treatment device for PCB (Printed Circuit Board) acidic etching solution |
| CN108854490A (en) * | 2018-06-27 | 2018-11-23 | 宜昌金信化工有限公司 | A kind of Chloroethanoic acid tail gas purifying and by-product hydrochloric acid new desulfurization process |
| CN109231168A (en) * | 2018-09-27 | 2019-01-18 | 河北东华舰化工有限公司 | A kind of production of chloroacetic acid reduce hydrochloric acid, in acetic acid by-product sulfuric acid content method and apparatus |
| CN112774405A (en) * | 2021-01-13 | 2021-05-11 | 河南红东方化工股份有限公司 | Tail gas treatment system is used in chloroacetic acid production |
-
2015
- 2015-03-11 CN CN201520137511.8U patent/CN204502734U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366747A (en) * | 2015-11-27 | 2016-03-02 | 昆山市千灯三废净化有限公司 | Resource-converting treatment device for PCB (Printed Circuit Board) acidic etching solution |
| CN105366747B (en) * | 2015-11-27 | 2017-10-17 | 昆山市千灯三废净化有限公司 | A kind of PCB acidic etching liquids processing equipment for recycling |
| CN108854490A (en) * | 2018-06-27 | 2018-11-23 | 宜昌金信化工有限公司 | A kind of Chloroethanoic acid tail gas purifying and by-product hydrochloric acid new desulfurization process |
| CN108854490B (en) * | 2018-06-27 | 2021-09-07 | 湖北泰盛化工有限公司 | Chloroacetic acid tail gas purification and byproduct hydrochloric acid desulfurization process |
| CN109231168A (en) * | 2018-09-27 | 2019-01-18 | 河北东华舰化工有限公司 | A kind of production of chloroacetic acid reduce hydrochloric acid, in acetic acid by-product sulfuric acid content method and apparatus |
| CN109231168B (en) * | 2018-09-27 | 2020-03-24 | 河北东华舰化工有限公司 | Method and device for reducing sulfuric acid content in hydrochloric acid and acetic acid by-products in chloroacetic acid production |
| CN112774405A (en) * | 2021-01-13 | 2021-05-11 | 河南红东方化工股份有限公司 | Tail gas treatment system is used in chloroacetic acid production |
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Address after: 051430 equipment manufacturing base and HENGJING Road south of Shijiazhuang, Hebei Province Patentee after: Shijiazhuang Chiyuan Chemical Co., Ltd Address before: 051340 equipment manufacturing base of Shijiazhuang, Hebei, Shijiazhuang Patentee before: HEBEI HUADONGJIAN CHEMICAL Co.,Ltd. |
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| CP03 | "change of name, title or address" |