CN213475436U - Complete equipment for producing polyferric trichloride by using waste hydrochloric acid from steel part pickling - Google Patents
Complete equipment for producing polyferric trichloride by using waste hydrochloric acid from steel part pickling Download PDFInfo
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- CN213475436U CN213475436U CN202022133365.5U CN202022133365U CN213475436U CN 213475436 U CN213475436 U CN 213475436U CN 202022133365 U CN202022133365 U CN 202022133365U CN 213475436 U CN213475436 U CN 213475436U
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- tail gas
- oxidation tower
- circulating pump
- tower
- hydrochloric acid
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 239000002699 waste material Substances 0.000 title claims abstract description 25
- 238000005554 pickling Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 14
- 239000010959 steel Substances 0.000 title claims abstract description 14
- 230000003647 oxidation Effects 0.000 claims abstract description 62
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 62
- 238000010521 absorption reaction Methods 0.000 claims abstract description 31
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 24
- 239000003054 catalyst Substances 0.000 claims abstract description 22
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 238000005273 aeration Methods 0.000 claims abstract description 12
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 7
- 241001330002 Bambuseae Species 0.000 claims abstract description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 7
- 239000011425 bamboo Substances 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 54
- 239000002253 acid Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229960002089 ferrous chloride Drugs 0.000 description 8
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000006386 neutralization reaction Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000010170 biological method Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- -1 allotment pond 1 Chemical compound 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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Abstract
The utility model discloses a complete sets of steel part pickling waste hydrochloric acid production polymerization ferric trichloride, throw feeder apparatus, circulating pump and tail gas treatment circulating pump including allotment pond, oxidation tower, tail gas absorption tower, exhaust emission section of thick bamboo, polymerization jar, catalyst, be equipped with defroster one in the oxidation tower, spray system unified and a plurality of filler one, the bottom is equipped with aeration systems in the oxidation tower, the last pipeline that extends to outside the oxidation tower that is equipped with of aeration systems, the other end of pipeline is connected and is equipped with air inlet unit, the oxidation tower bottom is through going into a pan feeding pipe and connecting the circulating pump, the circulating pump passes through discharging pipe one and is connected with spray system is unified, the oxidation tower top is equipped with pressure sensor, exhaust outlet, relief valve one and negative pressure valve, exhaust outlet passes through the blast pipe one and is connected with the tail gas absorption. Compared with the prior art, the utility model the advantage lie in: the poly-ferric chloride is manufactured and sold by utilizing the characteristics of the waste hydrochloric acid, thereby not only solving the problem of environmental protection, but also generating certain economic benefit.
Description
Technical Field
The utility model relates to the technical field of producing polyferric trichloride, in particular to complete equipment for producing polyferric trichloride by using waste hydrochloric acid generated in steel part pickling.
Background
The pickling waste liquid is a waste liquid generated after surface treatment is carried out by utilizing strong corrosivity of acid in the steel processing industry, belongs to industrial hazardous waste, and has corrosivity and pollution. For this reason, it is necessary to take measures to perform a harmless treatment. The treatment research on the pickling waste liquid at home and abroad has a long history, and the current treatment modes mainly comprise a neutralization precipitation method, a direct roasting method, a concentration crystallization method, a membrane separation method, a biological method and a chemical conversion method.
In actual industrial application, the neutralization precipitation method has large medicament consumption and poor neutralization effect; the direct roasting method and the concentration crystallization method need to consume a large amount of fuel; the membrane separation method has higher requirements on the treated acid; the biological method is only suitable for treating sulfuric acid pickling waste liquid and recovering elemental sulfur at present.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome above technical defect, provide one kind and utilize the characteristic of useless hydrochloric acid to make the polyferric chloride and sell, both solved the environmental protection problem, still produced the complete sets of polymerized ferric chloride of steel part pickling waste hydrochloric acid production of certain economic benefits.
In order to solve the technical problem, the utility model provides a technical scheme does: complete sets of steel part pickling waste hydrochloric acid production polymeric ferric chloride, throw feeder apparatus, circulating pump and tail gas treatment circulating pump including allotment pond, oxidation tower, tail gas absorption tower, tail gas discharge section of thick bamboo, polymerization jar, catalyst, the allotment pond is passed through the elevator pump and is connected with the oxidation tower, be equipped with a plurality of manholes on the oxidation tower, upper portion is equipped with defroster one from bottom to top in the oxidation tower in proper order, spray system is unified and a plurality of filler one, the bottom is equipped with aeration systems in the oxidation tower, the last pipeline that extends to outside the oxidation tower that is equipped with of aeration systems, the other end connection of pipeline is equipped with air inlet unit, the oxidation tower bottom is through going into a tub one and is connected the circulating pump, the circulating pump passes through discharging pipe one and spray system is unified, the oxidation tower bottom is connected with the polymerization jar through row material pipe, the, The tail gas absorption tower is internally provided with a demister II, a spraying system II and a plurality of fillers II from top to bottom in sequence, the bottom of the tail gas absorption tower is connected with a tail gas treatment circulating pump through a feeding pipe II, the tail gas treatment circulating pump is connected with the spraying system II through a discharging pipe II, and the top end of the tail gas absorption tower is connected with the bottom of a tail gas emission barrel through a discharging pipe II.
Furthermore, a ph meter is arranged on each of the blending tank, the oxidation tower and the polymerization tank, and a thermometer and a liquid level meter are also arranged on the oxidation tower.
Furthermore, the air inlet device comprises an air blower connected with a pipeline, and a first valve is connected to the pipeline.
Furthermore, the air inlet device comprises a supply system connected with a pipeline, and a flow control valve, a safety valve II, a pressure transmitter, a pressure reducing valve and a valve II are sequentially arranged on the pipeline towards the supply system.
Further, the catalyst feeding device is connected with the feeding pipe I through a catalyst feeding pump.
Compared with the prior art, the utility model the advantage lie in: the blending tank, the oxidation tower, the tail gas absorption tower, the tail gas discharge cylinder, the polymerization tank, the catalyst feeding device, the circulating pump and the tail gas treatment circulating pump are mutually connected and matched to prepare the pickling waste hydrochloric acid into the polyferric chloride for sale, so that the environmental pollution is eliminated, the production cost is saved for enterprises, and the environmental benefit and the economic benefit are obvious.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the second embodiment of the present invention.
As shown in the figure: 1. a blending pool, 2, an oxidation tower, 3, a tail gas absorption tower, 4, a tail gas discharge cylinder, 5, a polymerization tank, 6, a catalyst feeding device, 7, a circulating pump, 8, a tail gas treatment circulating pump, 9, a lift pump, 10, a manhole, 11, a first demister, 12, a first spraying system, 13, a first filler, 14, an aeration system, 15, a pipeline, 16, a first feeding pipe, 17, a first discharging pipe, 18, a discharging pipe, 19, a pressure sensor, 20, a tail gas discharging port, 21, a first safety valve, 22, a negative pressure valve, 23, a first exhaust pipe, 24, a second demister, 25, a second spraying system, 26, a second filler, 27, a second feeding pipe, 28, a second discharging pipe, 29, a second exhaust pipe, 30, a ph meter, 31, a thermometer, 32, a liquid level meter, 33, a blower, 34, a first valve, 35, a supply system, 36, a flow control valve, 37, a second safety valve, 38 and a pressure transmitter, 39. a pressure reducing valve 40, a valve II, a valve 41 and a catalyst adding pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example one
Complete sets of steel part pickling waste hydrochloric acid production polymerization ferric trichloride, including allotment pond 1, oxidation tower 2, tail gas absorption tower 3, tail gas discharge section of thick bamboo 4, polymerization tank 5, catalyst dosing device 6, circulating pump 7 and tail gas treatment circulating pump 8, allotment pond 1 is connected with oxidation tower 2 through elevator pump 9, be equipped with a plurality of manholes 10 on the oxidation tower 2, upper portion is equipped with defroster 11, 12 and a plurality of packing 13 from bottom to top in proper order in the oxidation tower 2, the bottom is equipped with aeration systems 14 in the oxidation tower 2, be equipped with the pipeline 15 that extends to the oxidation tower 2 outside on aeration systems 14, the other end of pipeline 15 is connected and is equipped with air inlet unit, oxidation tower 2 bottom is through pan feeding pipe 16 connection circulating pump 7, circulating pump 7 is connected with 12 through discharging pipe 17 and spraying systems, oxidation tower 2 bottom is connected with polymerization tank 5 through arranging material pipe 18, the top end of the oxidation tower 2 is provided with a pressure sensor 19, a tail gas discharge port 20, a first safety valve 21 and a negative pressure valve 22, the tail gas discharge port 20 is connected with the tail gas absorption tower 3 through a first exhaust pipe 23, a second demister 24, a second spraying system 25 and a plurality of second fillers 26 are sequentially arranged in the tail gas absorption tower 3 from top to bottom, the bottom of the tail gas absorption tower 3 is connected with a tail gas treatment circulating pump 8 through a second feeding pipe 27, the tail gas treatment circulating pump 8 is connected with the second spraying system 25 through a second discharging pipe 28, and the top end of the tail gas absorption tower 3 is connected with the bottom of a tail gas discharge cylinder 4 through a.
The system comprises a blending tank 1, an oxidation tower 2 and a polymerization tank 5, wherein the blending tank 1, the oxidation tower 2 and the polymerization tank 5 are respectively provided with a ph meter 30, the oxidation tower 2 is also provided with a thermometer 31 and a liquid level meter 32, an air inlet device comprises an air blower 33 connected with a pipeline 15, the pipeline 15 is connected with a first valve 34, and a catalyst feeding device 6 is connected with a first feeding pipe 16 through a catalyst feeding pump 41.
The working principle is as follows: the hydrochloric acid waste liquid enters a blending tank 1, scrap iron is added into the blending tank 1, and the molar ratio of ferrous acid is 1: 1, calculating according to the components of the waste acid, wherein the content of the ferrous chloride is 21 percent, and the reduced ferrous chloride concentration C1=266g/L =2.1 mol/L; hydrochloric acid content 7.5%, reduced hydrochloric acid concentration C2=81g/L =2.2 mol/L. It is necessary to reduce the amount of acid by 0.05 mol and to increase the amount of ferrous iron by reacting iron filings with acid. The blending tank 1 is provided with a ph meter 30 for controlling the ph value.
The prepared solution is lifted to the oxidation tower 2 by a lifting pump 9, and then the solution in the oxidation tower 2 is lifted to a spraying system 12 by a circulating pump 7, so that the solution is uniformly sprayed into the oxidation tower 2. The catalyst feeding device 6 connects the catalyst to the first feeding pipe 16 of the circulating pump 7 through the catalyst feeding pump 41. The air is introduced by the blower 3, the air is aerated into the oxidation tower 2 through the aeration system 14, oxygen in the air and ferrous chloride in the hydrochloric acid waste liquid are fully contacted and reacted in the packing layer, the ferrous chloride is oxidized into ferric chloride, and the circulation is usually carried out for 3-5 hours. The chemical reaction formula is as follows:
4FeCl2+O2+4HCl=4FeCl3+2H2O
and (3) feeding the oxidized solution into a polymerization tank 5, adding caustic soda to adjust the basicity to be about 20%, and selling the solution as polymerized ferric chloride. A pH meter 30 is provided in the polymerization tank 5 to control the basicity.
The tail gas of the oxidation tower 2 enters the tail gas absorption tower 3 through the tail gas discharge port 20, the gas is from bottom to top, absorption liquid in the tail gas absorption tower 3 is pumped into the spraying system II 25 by the tail gas treatment circulating pump 8 to be uniformly sprayed downwards to form countercurrent absorption, and the neutralized gas is discharged into the atmosphere through the tail gas discharge cylinder 4 after passing through the demister II 24.
When the method is implemented specifically, the whole set of equipment is automatically controlled by a PLC control system.
Example two
Combine shown in fig. 2, the complete sets of equipment of waste hydrochloric acid production polymerization ferric trichloride of steel part pickling, including allotment pond 1, oxidation tower 2, tail gas absorption tower 3, tail gas discharge section of thick bamboo 4, polymerization jar 5, catalyst are thrown and are thrown device 6, circulating pump 7 and tail gas treatment circulating pump 8, allotment pond 1 is connected with oxidation tower 2 through elevator pump 9, be equipped with a plurality of manholes 10 on the oxidation tower 2, upper portion is equipped with defroster 11, 12 and a plurality of packing 13 from bottom to top in oxidation tower 2 in proper order, the bottom is equipped with aeration systems 14 in oxidation tower 2, be equipped with the pipeline 15 that extends to the oxidation tower 2 outside on the aeration systems 14, the other end of pipeline 15 is connected and is equipped with air inlet unit, oxidation tower 2 bottom is through a pan feeding pipe 16 connection circulating pump 7, circulating pump 7 is connected with 12 in the spraying system through discharging pipe 17, 2 bottoms of oxidation tower are connected with polymerization jar 5 through arranging material pipe 18, 2 tops of oxidation tower are equipped with pressure sensor 19, exhaust vent 20, relief valve 21 and negative pressure valve 22, exhaust vent 20 is connected with tail gas absorption tower 3 through blast pipe 23, top-down is equipped with two 24, two 25 and a plurality of two 26 fillers of defroster in the tail gas absorption tower 3 in proper order, 3 bottoms of tail gas absorption tower are connected tail gas treatment circulating pump 8 through two 27 connection of pan feeding pipe, tail gas treatment circulating pump 8 is connected with two 25 of spraying system through two 28 of discharging pipe, 3 tops of tail gas absorption tower are connected with 4 bottoms of tail gas discharge section of thick bamboo through two 29 of blast pipes.
The system is characterized in that a ph meter 30 is arranged on each of the blending tank 1, the oxidation tower 2 and the polymerization tank 5, a thermometer 31 and a liquid level meter 32 are further arranged on the oxidation tower 2, the air inlet device comprises a supply system 35 connected with the pipeline 15, a flow control valve 36, a second safety valve 37, a pressure transmitter 38, a pressure reducing valve 39 and a second valve 40 are sequentially arranged on the pipeline 15 towards the supply system 35, and the catalyst feeding device 6 is connected with the first feeding pipe 16 through a catalyst feeding pump 41.
The working principle is as follows: the hydrochloric acid waste liquid enters a blending tank 1, scrap iron is added into the blending tank 1, and the molar ratio of ferrous acid is 1: 1, calculating according to the components of the waste acid, wherein the content of the ferrous chloride is 21 percent, and the reduced ferrous chloride concentration C1=266g/L =2.1 mol/L; hydrochloric acid content 7.5%, reduced hydrochloric acid concentration C2=81g/L =2.2 mol/L. It is necessary to reduce the amount of acid by 0.05 mol and to increase the amount of ferrous iron by reacting iron filings with acid. The blending tank 1 is provided with a ph meter 30 for controlling the ph value.
The prepared solution is lifted to the oxidation tower 2 by a lifting pump 9, and then the solution in the oxidation tower 2 is lifted to a spraying system 12 by a circulating pump 7, so that the solution is uniformly sprayed into the oxidation tower 2. The catalyst feeding device 6 connects the catalyst to the first feeding pipe 16 of the circulating pump 7 through the catalyst feeding pump 41.
The pipeline 15 on the oxidation tower 2 is provided with a pressure transmitter 38, the pressure of the oxygen inlet is controlled to be not more than 0.1MPa after passing through a pressure reducing valve 39, the pipeline is provided with a second safety valve 40 for adjusting the pressure value, and the oxygen amount is controlled by a flow control valve 36. The oxygen and the ferrous chloride in the hydrochloric acid waste liquid are in full contact reaction in the filler layer, the ferrous chloride is oxidized into ferric chloride, and the circulation is usually carried out for 3-5 hours. The chemical reaction formula is as follows:
4FeCl2+O2+4HCl=4FeCl3+2H2O
and (3) feeding the oxidized solution into a polymerization tank 5, adding caustic soda to adjust the basicity to be about 20%, and selling the solution as polymerized ferric chloride. A pH meter 30 is provided in the polymerization tank 5 to control the basicity.
The tail gas of the oxidation tower 2 enters the tail gas absorption tower 3 through the tail gas discharge port 20, the gas is from bottom to top, absorption liquid in the tail gas absorption tower 3 is pumped into the spraying system II 25 by the tail gas treatment circulating pump 8 to be uniformly sprayed downwards to form countercurrent absorption, and the neutralized gas is discharged into the atmosphere through the tail gas discharge cylinder 4 after passing through the demister II 24.
When the method is implemented specifically, the whole set of equipment is automatically controlled by a PLC control system.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (5)
1. Complete sets of steel part pickling waste hydrochloric acid production polymerization ferric trichloride, throw feeder apparatus (6), circulating pump (7) and tail gas treatment circulating pump (8) including allotment pond (1), oxidation tower (2), tail gas absorption tower (3), exhaust emission section of thick bamboo (4), polymerization tank (5), catalyst, its characterized in that: allotment pond (1) is connected with oxidation tower (2) through elevator pump (9), be equipped with a plurality of manholes (10) on oxidation tower (2), upper portion is equipped with defroster (11), spray system (12) and a plurality of filler (13) from bottom to top in oxidation tower (2) in proper order, the bottom is equipped with aeration systems (14) in oxidation tower (2), be equipped with on aeration systems (14) and extend to oxidation tower (2) outer pipeline (15), the other end of pipeline (15) is connected and is equipped with air inlet unit, circulating pump (7) are connected through pan feeding pipe (16) in oxidation tower (2) bottom, circulating pump (7) are connected with spray system (12) through discharging pipe (17), oxidation tower (2) bottom is connected with polymerization tank (5) through row material pipe (18), oxidation tower (2) top is equipped with pressure sensor (19), Tail gas discharge port (20), relief valve (21) and negative pressure valve (22), tail gas discharge port (20) are connected with tail gas absorption tower (3) through blast pipe (23), top-down is equipped with defroster two (24), spraying system two (25) and a plurality of filler two (26) in proper order in tail gas absorption tower (3), tail gas treatment circulating pump (8) is connected through pan feeding pipe two (27) in tail gas absorption tower (3) bottom, tail gas treatment circulating pump (8) are connected with spraying system two (25) through discharging pipe two (28), tail gas absorption tower (3) top is passed through blast pipe two (29) and is connected with tail gas discharge section of thick bamboo (4) bottom.
2. The complete equipment for producing the polymeric ferric chloride by using the steel part pickling waste hydrochloric acid as claimed in claim 1, which is characterized in that: the blending tank (1), the oxidation tower (2) and the polymerization tank (5) are all provided with a ph meter (30), and the oxidation tower (2) is also provided with a thermometer (31) and a liquid level meter (32).
3. The complete equipment for producing the polymeric ferric chloride by using the steel part pickling waste hydrochloric acid as claimed in claim 1, which is characterized in that: the air inlet device comprises an air blower (33) connected with a pipeline (15), and a first valve (34) is connected to the pipeline (15).
4. The complete equipment for producing the polymeric ferric chloride by using the steel part pickling waste hydrochloric acid as claimed in claim 1, which is characterized in that: the air inlet device comprises a feeding system (35) connected with a pipeline (15), and a flow control valve (36), a second safety valve (37), a pressure transmitter (38), a pressure reducing valve (39) and a second valve (40) are sequentially arranged on the pipeline (15) towards the feeding system (35).
5. The complete equipment for producing the polymeric ferric chloride by using the steel part pickling waste hydrochloric acid as claimed in claim 1, which is characterized in that: the catalyst feeding device (6) is connected with the feeding pipe I (16) through a catalyst feeding pump (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022133365.5U CN213475436U (en) | 2020-09-25 | 2020-09-25 | Complete equipment for producing polyferric trichloride by using waste hydrochloric acid from steel part pickling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022133365.5U CN213475436U (en) | 2020-09-25 | 2020-09-25 | Complete equipment for producing polyferric trichloride by using waste hydrochloric acid from steel part pickling |
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| CN213475436U true CN213475436U (en) | 2021-06-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114262099A (en) * | 2021-12-28 | 2022-04-01 | 北方工程设计研究院有限公司 | Steel part pickling solution recovery processing system |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114262099A (en) * | 2021-12-28 | 2022-04-01 | 北方工程设计研究院有限公司 | Steel part pickling solution recovery processing system |
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Address after: 050000 room 706, block B, white commercial plaza, 105 Huai'an East Road, Yuhua District, Shijiazhuang City, Hebei Province Patentee after: Zhongxia Xujie Construction Technology Co.,Ltd. Country or region after: China Patentee after: Hebei topbang Environmental Remediation Technology Co.,Ltd. Address before: 050000 room 706, block B, white commercial plaza, 105 Huai'an East Road, Yuhua District, Shijiazhuang City, Hebei Province Patentee before: HEBEI XUJIE ENVIRONMENTAL ENGINEERING Co.,Ltd. Country or region before: China Patentee before: Hebei topbang Environmental Remediation Technology Co.,Ltd. |