CN202061528U - Hydrogen chloride tail gas recovery device - Google Patents
Hydrogen chloride tail gas recovery device Download PDFInfo
- Publication number
- CN202061528U CN202061528U CN201120166108XU CN201120166108U CN202061528U CN 202061528 U CN202061528 U CN 202061528U CN 201120166108X U CN201120166108X U CN 201120166108XU CN 201120166108 U CN201120166108 U CN 201120166108U CN 202061528 U CN202061528 U CN 202061528U
- Authority
- CN
- China
- Prior art keywords
- hydrochloric acid
- tail gas
- acid recovery
- recovery tower
- hydrogen chloride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model relates to a hydrogen chloride tail gas recovery device, which is provided with at least one hydrochloric acid recovery tower and an absorption liquid circulating device, wherein the lower part of the hydrochloric acid recovery tower is provided with a tail gas inlet, the upper end of the hydrochloric acid recovery tower is provided with a tail gas outlet, a secondary spray device for spraying absorption liquid is arranged in each hydrochloric acid recovery tower, the secondary spray device comprises two sprayers arranged up and down, a filler layer is respectively arranged under each sprayer, the lower part of the hydrochloric acid recovery tower is provided with a circulating liquid tank for recovering the absorption liquid sprayed by the secondary spray device, and the circulating liquid tank is communicated with the secondary spray device through a pipeline of the absorption liquid circulating device. The hydrogen chloride tail gas recovery device disclosed by the utility model has a novel conception, the hydrochloric acid recovery tower is provided with the secondary spray device, the effect of absorbing hydrogen chloride in recovered tail gas is better, and hydrochloric acid products with value in use are obtained. The device realizes electrified control and has high automation degree, and the operation cost of the device is greatly lower than that of an original hydrogen chloride tail gas treatment tower.
Description
Technical field
The utility model relates to tail gas recycle treatment facility technical field, especially a kind of hydrogen chloride tail gas reclaimer, be used for absorbing the hydrogen chloride gas in the tail gas that polysilicon production process discharges, the tail gas that will contain hydrogen chloride directly is transformed into the technical equipment of utilizing the byproduct hydrochloric acid that is worth.
Background technology
Produce a large amount of tail gas in the polysilicon production process, contain a large amount of hydrogen chloride in the tail gas, traditional exhaust gas treating method is to neutralize with alkaline solution and tail gas, and the brine waste that this process will produce flood tide needs further to handle, otherwise will cause the serious environmental pollution problem.And traditional exhaust gas treating method also need consume the medicament expense usefulness of great number.How the hydrogen chloride composition in the polysilicon tail gas of discharging is separated or be transformed into useful byproducts, reduce secondary pollution, reduce the production cost of polysilicon enterprise, available resources in the tail gas are reused for the activity in production of enterprise, reduce the discharging of " three wastes " pollution sources, the real new technology that realizes energy-saving and emission-reduction, new equipment.
Existing a kind of hydrochloric acid recovery tower, come absorbing hydrogen chloride gas by the sprayer spray absorption liquid that is provided with in the tower, absorption liquid is selected clear water for use, hydrochloric acid recovery tower bottom has the tail gas import, and hydrochloric acid recovery tower top has the tail gas outlet, and sprayer is arranged on the top of hydrochloric acid recovery tower, the sprayer below has packing layer, hydrochloric acid recovery tower lower end has the circulation fluid case, and the circulation fluid case has liquid outlet, and liquid outlet is communicated with by pipeline and circulating pump with sprayer.Tail gas enters hydrochloric acid recovery tower and upwards mobile by the tail gas import during work, absorption liquid in the circulation fluid case is transported to sprayer by circulating pump, sprayer is distributed to packing layer uniformly to the absorption liquid after atomizing, tail gas is absorbed at packing layer by the absorption liquid of reverse flow, and the tail gas behind the removal hydrogen chloride gas is got rid of from the tail gas outlet at hydrochloric acid recovery tower top.This hydrochloric acid recovery tower is simple in structure, can remove most of hydrogen chloride gas in the tail gas, and operating cost is lower, but still has remaining hydrogen chloride gas in the tail gas, and directly discharging still has harmful effect to environment.
The utility model content
The technical problems to be solved in the utility model is: in order to solve deficiency of the prior art, the utility model provides a kind of hydrogen chloride tail gas retracting device, has the secondary spray equipment in the hydrogen chloride recovery tower, and assimilation effect is better.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of hydrogen chloride tail gas retracting device, have at least one hydrochloric acid recovery tower and absorption liquid EGR, the bottom of hydrochloric acid recovery tower offers the tail gas import, the upper end of hydrochloric acid recovery tower offers the tail gas outlet, be provided with the secondary spray equipment of spray absorption liquid in described each hydrochloric acid recovery tower, described secondary spray equipment comprises the sprayer of two upper and lower settings, each sprayer below is respectively equipped with packing layer, the bottom of hydrochloric acid recovery tower has the circulation fluid case of the absorption liquid that reclaims the ejection of secondary spray equipment, and circulation fluid case and secondary spray equipment are by absorption liquid EGR pipeline connection.
For fully absorbing the hydrogen chloride gas in the tail gas, described hydrochloric acid recovery tower quantity is two, be respectively a grade hydrochloric acid recovery tower and the two grade hydrochloric acid recovery towers of series connection successively, pipeline connection is passed through in the tail gas outlet and the tail gas import of two grade hydrochloric acid recovery towers of one grade hydrochloric acid recovery tower, one grade hydrochloric acid recovery tower correspondence is provided with one-level absorption liquid EGR, two grade hydrochloric acid recovery tower correspondences are provided with secondary absorption liquid EGR, are provided with the pressure sensor P of measurement gas pressure in the pipeline between the tail gas outlet of a described grade hydrochloric acid recovery tower and the tail gas import of two grade hydrochloric acid recovery towers.
For guaranteeing that equipment works long hours, reduce the influence that equipment fault brings, described absorption liquid EGR has two and is arranged in parallel standby each other circulating pump, two inlet of circulating pump and circulation fluid case pipeline connection, two outlet of circulating pump and secondary spray equipment pipeline connection, two outlet of circulating pump and import department are respectively equipped with switch electromagnetic valve.
The outlet of described secondary absorption liquid EGR pipeline respectively connects the secondary spray equipment of two grade hydrochloric acid recovery towers and the circulation fluid case of a grade hydrochloric acid recovery tower, pipeline between the secondary spray equipment of the outlet of secondary absorption liquid EGR and two grade hydrochloric acid recovery towers is provided with switch electromagnetic valve, and the pipeline between the circulation fluid case of the outlet of secondary absorption liquid EGR and a grade hydrochloric acid recovery tower is provided with switch electromagnetic valve.
The tail gas that enters for the tail gas import that makes the hydrochloric acid recovery tower is evenly distributed, to improve assimilation effect, the tail gas import department of described hydrochloric acid recovery tower is provided with gas distributor, discharges the hydrochloric acid recovery tower for avoiding acid mist with tail gas, and the tail gas exit of hydrochloric acid recovery tower is provided with demister.
For storing acidity hydrochloric acid up to standard, also have the hydrochloric acid holding vessel, described circulation fluid case is communicated with by hydrochloric acid delivery pump pipeline with the hydrochloric acid holding vessel, is respectively equipped with switch electromagnetic valve on the import of hydrochloric acid delivery pump and the pipeline in exit.When concentration is up to standard, open the hydrochloric acid delivery pump, make hydrochloric acid enter the hydrochloric acid holding vessel and preserve.
For detecting the quality of the absorption liquid in the circulation fluid case in real time, be provided with heat-exchanger rig, liquid level sensor, temperature sensor and concentration of hydrochloric acid sensor in the described circulation fluid case.
For realizing automation control, also has the electric control unit that shows and control heat-exchanger rig, liquid level sensor, temperature sensor, concentration of hydrochloric acid sensor and absorption liquid EGR duty, electric control unit and each circulating pump and switch electromagnetic valve control connection.
The position of optimizing sprayer and packing layer is to improve assimilation effect, and the packing layer distance of described each sprayer and below is 800 ± 100mm.
Because of hydrochloric acid has corrosivity, select the acid-proof corrosion material for use, described hydrogen chloride recovery tower is the fiberglass recovery tower of anti-acid corrosion, described pipeline is a glass reinforced plastic pipe.Glass-reinforced plastic material can be prevented acid corrosion, can also antistatic.
The beneficial effects of the utility model are, hydrogen chloride tail gas retracting device of the present utility model is novel, the hydrochloric acid recovery tower has the secondary spray equipment, absorb the hydrogen chloride better effects if that reclaims in the tail gas, obtain utilizing the salt acid product that is worth, this device is realized electrified control, the automaticity height, and operating cost greatly lowers than original hydrogen chloride tail gas treating column.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of first embodiment of hydrogen chloride tail gas retracting device of the present utility model;
Fig. 2 is the structural representation of second embodiment of hydrogen chloride tail gas retracting device of the present utility model.
Among the figure: 1. hydrochloric acid recovery tower, 11. absorption liquid EGRs, 12. sprayers, 13. packing layers, 14. the circulation fluid case, 15. heat-exchanger rigs, 16. hydrochloric acid delivery pumps, 17. gas distributor, 18. demisters, 2. a grade hydrochloric acid recovery tower, 21. one-level absorption liquid EGR, 3. two grade hydrochloric acid recovery towers, 31. secondary absorption liquid EGRs, 4. electric control unit, 5. hydrochloric acid holding vessel, L. liquid level sensor, T. temperature sensor, H. concentration of hydrochloric acid sensor, P. pressure sensor.
The specific embodiment
In conjunction with the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
Fig. 1 is first embodiment of hydrogen chloride tail gas retracting device of the present utility model, have a hydrochloric acid recovery tower 1 and absorption liquid EGR 11, the bottom of hydrochloric acid recovery tower 1 offers the tail gas import, the tail gas import department of hydrochloric acid recovery tower 1 is provided with gas distributor 17, the upper end of hydrochloric acid recovery tower 1 offers the tail gas outlet, the tail gas exit of hydrochloric acid recovery tower 1 is provided with demister 18, be provided with the secondary spray equipment of spray absorption liquid in the hydrochloric acid recovery tower 1, the secondary spray equipment comprises the sprayer 12 of two upper and lower settings, each sprayer 12 below is respectively equipped with packing layer 13, each sprayer 12 is 800 ± 100mm with packing layer 13 distances of below, the bottom of hydrochloric acid recovery tower 1 has the circulation fluid case 14 of the absorption liquid that reclaims the ejection of secondary spray equipment, circulation fluid case 14 passes through absorption liquid EGR 11 pipeline connections with the secondary spray equipment, be provided with heat-exchanger rig 15 in the circulation fluid case 14, liquid level sensor L, temperature sensor T and concentration of hydrochloric acid sensor H also have demonstration and control heat-exchanger rig 15, liquid level sensor L, temperature sensor T, the electric control unit 4 of concentration of hydrochloric acid sensor H and absorption liquid EGR 11 duties.Circulate in the hydrochloric acid recovery tower that absorption liquid EGR 11 does not stop absorption liquid, make watery hydrochloric acid become certain density hydrochloric acid.Electric control unit 4 is controlled each device work automatically according to the duty parameter in the hydrochloric acid recovery tower of gathering, and realizes automation.
For storing acidity hydrochloric acid up to standard, also have hydrochloric acid holding vessel 5, circulation fluid case 14 passes through hydrochloric acid delivery pump 16 pipeline connections with hydrochloric acid holding vessel 5, is respectively equipped with switch valve on the import of hydrochloric acid delivery pump 16 and the pipeline in exit.Entering hydrochloric acid holding vessel 5 after the hydrochloric acid in the circulation fluid case 14 reaches finite concentration preserves.
For guaranteeing that equipment works long hours, reduce the influence that equipment fault brings, absorption liquid EGR 11 has two and is arranged in parallel standby each other circulating pump, two inlet of circulating pump and circulation fluid case 14 pipeline connections, two outlet of circulating pump and secondary spray equipment pipeline connection, two outlet of circulating pump and import department are respectively equipped with switch electromagnetic valve.Electric control unit 4 and each circulating pump and switch electromagnetic valve control connection are realized electrified control.
For preventing hcl corrosion equipment, hydrogen chloride recovery tower 1 and pipeline are the glass-reinforced plastic material of anti-acid corrosion and make.
Below introduce concrete use of the present utility model.
Tail gas enters in the tower from the tail gas import of hydrochloric acid recovery tower 1, absorption liquid in the circulation fluid case 14 is transported to the sprayer 12 of two upper and lower settings and sprays absorption liquid downwards under the circulating pump effect of absorption liquid EGR 11, the absorption liquid of bringing into use selects for use clear water to get final product, tail gas evenly makes progress under the gas distributor effect converging in the packing area of mobile and absorption liquid, absorption liquid absorbs hydrogen chloride in tail gas and becomes watery hydrochloric acid later on, get back to circulation fluid case 14 again, circulation repeatedly under the circulating pump effect, the concentration of watery hydrochloric acid constantly raises, after concentration of hydrochloric acid sensor H records concentration of hydrochloric acid and reaches finite concentration, open hydrochloric acid delivery pumps 16 by electrical control control module 4 and the hydrochloric acid in the circulation fluid case 14 are delivered to hydrochloric acid holding vessel 5 preserve.The liquid level of the absorption liquid in the liquid level sensor L monitoring circulation fluid case 14 also adds absorption liquids automatically by electric controller 4, makes that work is sustainable to be carried out.Absorption liquid temperature in the temperature sensor T monitoring circulation fluid case 14 is also passed through 15 work of electric controller industry control system heat-exchanger rig, and absorption liquid is maintained in the certain temperature range.
Fig. 2 is second embodiment of hydrogen chloride tail gas retracting device of the present utility model, the difference of second embodiment and first embodiment is to have two hydrochloric acid recovery towers, be respectively a grade hydrochloric acid recovery tower 2 and the two grade hydrochloric acid recovery towers 3 of series connection successively, pipeline connection is passed through in the tail gas outlet and the tail gas import of two grade hydrochloric acid recovery towers 3 of one grade hydrochloric acid recovery tower 2, one grade hydrochloric acid recovery tower, 2 correspondences are provided with one-level absorption liquid EGR 21, two grade hydrochloric acid recovery towers, 3 correspondences are provided with secondary absorption liquid EGR 31, be provided with the pressure sensor P of measurement gas pressure in the pipeline between the tail gas outlet of one grade hydrochloric acid recovery tower 2 and the tail gas import of two grade hydrochloric acid recovery towers 3, electric control unit 4 is gathered the running parameter of pressure sensor P to control other equipment work.
The outlet of secondary absorption liquid EGR 31 pipeline respectively connects the secondary spray equipment of two grade hydrochloric acid recovery towers 3 and the circulation fluid case 14 of a grade hydrochloric acid recovery tower 2, pipeline between the secondary spray equipment of the outlet of secondary absorption liquid EGR 31 and two grade hydrochloric acid recovery towers 3 is provided with switch electromagnetic valve, and the pipeline between the circulation fluid case 14 of the outlet of secondary absorption liquid EGR 31 and a grade hydrochloric acid recovery tower 2 is provided with switch electromagnetic valve.
Secondary absorption liquid EGR 31 enters a grade hydrochloric acid recovery tower 2 with the absorption liquid shunting part in the two grade hydrochloric acid recovery towers 3.Other structure is similar with first embodiment with operation.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (10)
1. hydrogen chloride tail gas retracting device, have at least one hydrochloric acid recovery tower (1) and absorption liquid EGR (11), the bottom of hydrochloric acid recovery tower (1) offers the tail gas import, the upper end of hydrochloric acid recovery tower (1) offers the tail gas outlet, it is characterized in that: the secondary spray equipment that is provided with the spray absorption liquid in described each hydrochloric acid recovery tower (1), described secondary spray equipment comprises the sprayer (12) of two upper and lower settings, each sprayer (12) below is respectively equipped with packing layer (13), the bottom of hydrochloric acid recovery tower (1) has the circulation fluid case (14) of the absorption liquid that reclaims the ejection of secondary spray equipment, and circulation fluid case (14) passes through absorption liquid EGR (11) pipeline connection with the secondary spray equipment.
2. hydrogen chloride tail gas retracting device as claimed in claim 1, it is characterized in that: described hydrochloric acid recovery tower quantity (1) is two, be respectively a grade hydrochloric acid recovery tower (2) and the two grade hydrochloric acid recovery towers (3) of series connection successively, pipeline connection is passed through in the tail gas outlet and the tail gas import of two grade hydrochloric acid recovery towers (3) of one grade hydrochloric acid recovery tower (2), one grade hydrochloric acid recovery tower (2) correspondence is provided with one-level absorption liquid EGR (21), two grade hydrochloric acid recovery tower (3) correspondences are provided with secondary absorption liquid EGR (31), are provided with the pressure sensor (P) of measurement gas pressure in the pipeline between the tail gas outlet of a described grade hydrochloric acid recovery tower (2) and the tail gas import of two grade hydrochloric acid recovery towers (3).
3. hydrogen chloride tail gas retracting device as claimed in claim 1 or 2, it is characterized in that: described absorption liquid EGR (11) has two and is arranged in parallel standby each other circulating pump, two inlet of circulating pump and circulation fluid case (14) pipeline connection, two outlet of circulating pump and secondary spray equipment pipeline connection, two outlet of circulating pump and import department are respectively equipped with switch electromagnetic valve.
4. hydrogen chloride tail gas retracting device as claimed in claim 2, it is characterized in that: the outlet of described secondary absorption liquid EGR (31) pipeline respectively connects the secondary spray equipment of two grade hydrochloric acid recovery towers (3) and the circulation fluid case (14) of a grade hydrochloric acid recovery tower (2), pipeline between the secondary spray equipment of the outlet of secondary absorption liquid EGR (31) and two grade hydrochloric acid recovery towers (3) is provided with switch electromagnetic valve, and the pipeline between the circulation fluid case (14) of the outlet of secondary absorption liquid EGR (31) and a grade hydrochloric acid recovery tower (2) is provided with switch electromagnetic valve.
5. hydrogen chloride tail gas retracting device as claimed in claim 1 is characterized in that: the tail gas import department of described hydrochloric acid recovery tower (1) is provided with gas distributor (17), and the tail gas exit of hydrochloric acid recovery tower (1) is provided with demister (18).
6. hydrogen chloride tail gas retracting device as claimed in claim 1, it is characterized in that: also have hydrochloric acid holding vessel (5), described circulation fluid case (14) passes through hydrochloric acid delivery pump (16) pipeline connection with hydrochloric acid holding vessel (5), is respectively equipped with switch electromagnetic valve on the import of hydrochloric acid delivery pump (16) and the pipeline in exit.
7. hydrogen chloride tail gas retracting device as claimed in claim 1 or 2 is characterized in that: be provided with heat-exchanger rig (15), liquid level sensor, temperature sensor and concentration of hydrochloric acid sensor in the described circulation fluid case (14).
8. hydrogen chloride tail gas retracting device as claimed in claim 7 is characterized in that: also have the electric control unit (4) that shows and control heat-exchanger rig (15), liquid level sensor (L), temperature sensor (T), concentration of hydrochloric acid sensor (H) and absorption liquid EGR (11) duty.
9. hydrogen chloride tail gas retracting device as claimed in claim 1 is characterized in that: described each sprayer (12) is 800 ± 100mm with packing layer (13) distance of below.
10. as claim 1 or 2 or 4 or 6 described hydrogen chloride tail gas retracting devices, it is characterized in that: described hydrogen chloride recovery tower (1) is the fiberglass recovery tower of anti-acid corrosion, and described pipeline is a glass reinforced plastic pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120166108XU CN202061528U (en) | 2011-05-19 | 2011-05-19 | Hydrogen chloride tail gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120166108XU CN202061528U (en) | 2011-05-19 | 2011-05-19 | Hydrogen chloride tail gas recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202061528U true CN202061528U (en) | 2011-12-07 |
Family
ID=45055410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120166108XU Expired - Fee Related CN202061528U (en) | 2011-05-19 | 2011-05-19 | Hydrogen chloride tail gas recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202061528U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198361A (en) * | 2011-05-19 | 2011-09-28 | 蒋超 | Hydrogen chloride tail gas recovery equipment |
| CN103691258A (en) * | 2013-04-10 | 2014-04-02 | 苏州市三敏环境工程有限公司 | Water washing tower |
| CN103877833A (en) * | 2014-02-19 | 2014-06-25 | 南京工业大学 | Treatment method of benzyl chloride, chlorine and hydrogen chloride-containing mixed waste gas |
| 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 |
-
2011
- 2011-05-19 CN CN201120166108XU patent/CN202061528U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198361A (en) * | 2011-05-19 | 2011-09-28 | 蒋超 | Hydrogen chloride tail gas recovery equipment |
| CN102198361B (en) * | 2011-05-19 | 2013-09-04 | 蒋超 | Hydrogen chloride tail gas recovery equipment |
| CN103691258A (en) * | 2013-04-10 | 2014-04-02 | 苏州市三敏环境工程有限公司 | Water washing tower |
| CN103877833A (en) * | 2014-02-19 | 2014-06-25 | 南京工业大学 | Treatment method of benzyl chloride, chlorine and hydrogen chloride-containing mixed waste gas |
| CN103877833B (en) * | 2014-02-19 | 2015-11-04 | 南京工业大学 | The processing method of a kind of chloride Bian, chlorine and hydrogen chloride mix waste gas |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102198361B (en) | Hydrogen chloride tail gas recovery equipment | |
| CN202061528U (en) | Hydrogen chloride tail gas recovery device | |
| CN102886199B (en) | Flue gas desulfurization device and desulfurization method by magnesium oxide process | |
| CN204816203U (en) | A acid mist purification tower for handling acid gas | |
| CN105268296A (en) | Acid mist purifying tower | |
| CN103752139B (en) | A kind of formic acid acidification of acidification section device for absorbing tail gas and absorption process | |
| CN203540297U (en) | Xylene tail gas recovery device | |
| CN201912877U (en) | System for processing medical waste incineration tail gas containing high concentration hydrogen chloride | |
| CN203816487U (en) | Washing tower system | |
| CN202576152U (en) | Hollow spray column type flue gas desulfurization wastewater concentration device | |
| CN103316580A (en) | Viscose fiber desulfuration and recovery device and method | |
| CN204365121U (en) | A kind of multistage purification fibreglass epoxy acid mist purifying column | |
| CN1436582A (en) | Leaked chlorine absorbing apparatus and process | |
| CN108452658A (en) | A kind of high vertical PP soda acids exhaust gas washing tower of gas flow rate | |
| CN203807201U (en) | Multistage efficient air stripping system for ammonia nitrogen wastewater | |
| CN103979627A (en) | Multistage efficient gas stripping system of ammonia nitrogen wastewater | |
| CN201214046Y (en) | Ammonia process desulphurizing device for reducing ammonia escape | |
| CN202028335U (en) | Waste gas recycling device of ultra pure ammonia production system | |
| CN203944277U (en) | Industrial organic exhaust gas integrated wastewater treatment plant | |
| CN106268232A (en) | The processing means of a kind of waste gas containing fluoride and processing method | |
| CN202705065U (en) | High concentration ferric trichloride production device | |
| CN206965513U (en) | A kind of emission-control equipment of printing and dyeing assistant workshop | |
| CN208082148U (en) | A kind of chloropropyl alcohol acidic tail gas absorbing device | |
| CN211987966U (en) | A novel gas washing system for landfill leachate handles | |
| CN204058156U (en) | A kind of vacuum distillation removes the device of ammonia nitrogen in waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: JIANGSU HONGYUAN FRP EQUIPMENT CO., LTD. Assignor: Jiang Chao Contract record no.: 2012320000055 Denomination of utility model: Hydrogen chloride tail gas recovery equipment Granted publication date: 20111207 License type: Exclusive License Record date: 20120209 |
|
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU HONGYUAN FRP EQUIPMENT CO., LTD. Free format text: FORMER OWNER: JIANG CHAO Effective date: 20120302 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120302 Address after: 213175 Changzhou District, Jiangsu City, Wujin Province town of Cao Yun Village Post Office Xijiang Su Hongyuan glass fiber reinforced plastic Co., Ltd. Patentee after: JIANGSU HONGYUAN FRP EQUIPMENT CO., LTD. Address before: 213175, No. 1, Dahe head, Tan Town, Wujin District, Jiangsu, Changzhou Patentee before: Jiang Chao |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20180519 |