CN113521990A - Acid-containing gas purification system and method for pickling workshop - Google Patents
Acid-containing gas purification system and method for pickling workshop Download PDFInfo
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- CN113521990A CN113521990A CN202110741837.1A CN202110741837A CN113521990A CN 113521990 A CN113521990 A CN 113521990A CN 202110741837 A CN202110741837 A CN 202110741837A CN 113521990 A CN113521990 A CN 113521990A
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- 239000002253 acid Substances 0.000 title claims abstract description 51
- 238000005554 pickling Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000000746 purification Methods 0.000 title claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 161
- 239000007788 liquid Substances 0.000 claims abstract description 74
- 230000015271 coagulation Effects 0.000 claims abstract description 19
- 238000005345 coagulation Methods 0.000 claims abstract description 19
- 241000196324 Embryophyta Species 0.000 claims description 17
- 238000009833 condensation Methods 0.000 claims description 16
- 230000005494 condensation Effects 0.000 claims description 13
- 238000013016 damping Methods 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 244000025254 Cannabis sativa Species 0.000 claims description 3
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 3
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 3
- 235000009120 camo Nutrition 0.000 claims description 3
- 235000005607 chanvre indien Nutrition 0.000 claims description 3
- 239000011487 hemp Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000003595 mist Substances 0.000 abstract description 9
- 238000007599 discharging Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 63
- 101100006584 Mus musculus Clnk gene Proteins 0.000 description 8
- 238000007789 sealing Methods 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/346—Controlling the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
Abstract
The invention relates to a system and a method for purifying acid-containing gas in a pickling workshop, wherein the system comprises a head-end water tank, a plurality of middle water tanks and a tail-end water tank which are used for containing alkaline liquid and are sequentially connected through an air duct, the head-end water tank is connected with an air inlet pipe with a fan, the top of the head-end water tank is connected with the air duct in a penetrating way, and the tail-end water tank is connected with an air outlet; the horizontal section of the air duct is internally provided with a coagulation ball, a coagulation bottle is arranged below the coagulation ball, air homogenizing plates are arranged below the liquid level in all the water tanks, coagulation plates which are transverse to the horizontal cross section of the head end water tank and the middle water tank are arranged above the liquid level of the head end water tank and the middle water tank, and a plurality of drainage ropes which vertically extend to the liquid level are connected below the coagulation plates. The method comprises the steps of assembling a system, starting air inlet, leading air flow to pass through each water tank and finally discharging, and scattering, baffling and gathering moisture for multiple times in each water tank. The invention achieves the effect of removing acid mist in a workshop.
Description
Technical Field
The invention relates to an acid-containing gas purification system and method for an acid pickling workshop, and belongs to the technical field of acid gas purification.
Background
The hot galvanizing process is that a zinc ingot is placed in a zinc pot at 435-445 ℃ for melting, the plating-assistant structural member is conveyed into the zinc pot by a conveying travelling crane for hot dipping, the residence time of the structural member in zinc liquid is controlled within 3-5min, and a plating layer of 30-150 mu m is formed on the surface of a workpiece.
The structural part needs to be subjected to oil removal, acid pickling, water washing and activation plating assistance before hot galvanizing, 15% -18% hydrochloric acid (prepared by adding 31% quantitative hydrochloric acid into a pickling tank by using a metering pump and then adding tap water) is adopted for acid pickling in the acid pickling process, the acid pickling temperature is 10-20 ℃, and meanwhile, a small amount of rust remover (acid mist inhibitor) is added into a pickling solution, so that the acid pickling speed is accelerated, and the generation of acid mist (HCl) is reduced. During pickling, acid exhaust gas is volatilized. If the acidic waste gas cannot be purified properly, the acidic waste gas is directly discharged into the air, which causes serious air pollution and damages the respiratory systems of organisms, plants and human beings.
Disclosure of Invention
In order to solve the technical problems, the invention provides a system and a method for purifying acid-containing gas in a pickling plant, and the specific technical scheme is as follows:
an acid-containing gas purification system for a pickling workshop comprises a head end water tank, a plurality of middle water tanks and a tail end water tank, wherein alkaline liquid is contained in the head end water tank, the middle water tanks and the tail end water tank, an air inlet pipe is arranged on the side wall of the head end water tank close to the bottom of the side wall of the head end water tank and communicated with the head end water tank, a fan is arranged on the air inlet pipe,
the top of the head end water tank is communicated with an air duct, the downstream of the air duct is communicated to the position, close to the bottom, of the side wall of one middle water tank adjacent to the air duct, the air duct is led out from the top of the middle water tank on the upstream side in a communicated mode, the bottom of the air duct extends to the position, close to the bottom, of the side wall of the middle water tank on the adjacent downstream side until the top of the middle water tank on the most downstream side is connected to the position, close to the bottom, of the side wall of the tail end water tank through the air duct, and an air outlet is formed in the position, close to the top, of the side wall of the tail end water tank;
the upper part of the gas guide tube is provided with a horizontal section, a coagulation ball is arranged in the horizontal section, a liquid collection bottle is arranged below the coagulation ball, the liquid collection bottle is communicated with the gas guide tube, and condensed water in the coagulation ball falls into the liquid collection bottle;
the head end water tank, the middle water tank and the tail end water tank are respectively internally provided with an air homogenizing plate which is transverse to the horizontal cross section of the head end water tank, the middle water tank and the tail end water tank, the air homogenizing plate is positioned below the liquid level, condensing plates which are transverse to the horizontal cross section of the head end water tank and the middle water tank are respectively arranged above the liquid level of the head end water tank and the middle water tank, and a plurality of vertical drainage ropes extending to the position below the liquid level are connected below the condensing plates.
Further, be provided with the ooff valve between fan and the head end basin, the upstream end of ooff valve is provided with interim exhaust pipe, interim exhaust pipe link up with the air-supply line, and interim exhaust pipe is provided with the damping valve, interim exhaust pipe is located the fan downstream side.
Further, the gas homogenizing plate comprises an upper layer of grid plate and a lower layer of grid plate, and a grid is arranged between the upper layer of grid plate and the lower layer of grid plate.
Furthermore, the bottom of the inner sides of the head end water tank, the middle water tank and the tail end water tank is provided with a rotating fan, the bottom of the outer sides of the head end water tank, the middle water tank and the tail end water tank is provided with a motor, and a driving shaft of the motor penetrates through the bottom of the corresponding head end water tank, the bottom of the middle water tank and the bottom of the tail end water tank and is clamped in a center sleeve of the rotating fan.
Further, the coagulation board is the wire net, and the coagulation board is provided with the circular shape pit of a plurality of undercut, the bottom trompil of pit, the rope made of hemp that the drainage rope formed for the spiral winding, the top of drainage rope is the branch rope of many branches of scattering, the top of branch rope is fixed in the inside wall all around in hole.
Further, the bottom of gathering the liquid bottle is hourglass hopper-shaped, the bottom of gathering the liquid bottle is provided with the bottleneck, and the bottleneck shutoff is provided with the bottle lid.
Furthermore, the hollow ball that gathers the ball and be a plurality of nestification settings, every hollow ball all sets up and distributes and have the bleeder vent, and all hollow balls all run through to be fixed on a dead lever, and the bottom of dead lever extends to and hangs in gathering the liquid bottle, and the uncovered inner wall in top that gathers the liquid bottle is fixed through the bracing piece around the hollow ball in the outside.
Furthermore, the tail end of the air outlet is in a flaring horn shape.
Further, an acidity detector is arranged on the air guide pipe connected with the tail end water tank, and the acidity detector is arranged on the vertical section of the air guide pipe.
The method for purifying the acid-containing gas in the pickling plant comprises the following steps:
step 1: starting a system: firstly, assembling the acid-containing gas purification system of the pickling plant according to any one of claims 1 to 8, closing the switch valve, and respectively adding alkaline liquid into the head-end water tank, the middle water tank and the tail-end water tank, wherein the liquid level of the alkaline liquid is higher than the gas homogenizing plate;
step 2: firstly, opening a damping valve, opening a fan, opening a switch valve after the fan is stabilized, closing the damping valve, enabling gas to enter a head-end water tank, enabling the gas to enter alkaline gas, enabling the gas to move upwards, enabling the gas to enter a space above the liquid level of the head-end water tank through an air evening plate, enabling moisture in the gas to be gathered through a condensation plate, finally converging the moisture to a drainage rope, enabling the moisture to flow downwards along the drainage rope, and finally converging the moisture to alkaline liquid in the head-end water tank;
and step 3: the gas passing through the condensation plate upwards enters the gas guide pipe and finally enters the middle water tank, and the gas is circulated in sequence until the gas enters the tail end water tank, and the gas is discharged from the gas outlet after emerging from the alkaline liquid.
The invention has the beneficial effects that:
the acid mist cleaning system is used for removing acid components in acid mist air, reducing dispersed acid mist in air in an acid cleaning room, playing a role in cleaning air in a workshop, and preventing the acid mist from being leaked into the air to cause air pollution, and belongs to an indoor air cleaning system.
The invention can properly change the concentration of the alkaline liquid and the number of the middle water tanks according to the concentration of acid mist in a workshop, increase the volume of the alkaline liquid and increase the retention time of acid gas in the alkaline liquid.
According to the invention, the liquid brought out by the gas is condensed by the liquid-gathering bottle, and the liquid in the liquid-gathering bottle can be sampled by opening the bottle cap, so that the alkalinity of the alkaline liquid in the head-end water tank or the corresponding middle water tank can be detected at any time, and the alkaline liquid can be monitored in time.
Drawings
Figure 1 is a front view of the present invention,
figure 2 is an enlarged view of the coalescing plate and drainage line of figure 1,
figure 3 is an enlarged view of figure 1 at the cyclone fan,
in the figure: 1-fan, 2-air inlet pipe, 3-head end water tank, 4-even air plate, 5-drainage rope, 6-condensation plate, 7-air guide pipe, 8-condensation ball, 9-liquid-condensation bottle, 10-bottle cap, 11-middle water tank, 12-end water tank, 13-air outlet, 14-switch valve, 15-damping valve, 16-temporary exhaust pipe, 17-hole, 18-pit, 19-branch rope, 20-cyclone fan, 21-motor, 22-center sleeve, 23-driving shaft and 24-sealing shaft sleeve.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, the acid-containing gas purification system of the pickling plant of the present invention includes a head end water tank 3, a plurality of middle water tanks 11 and a tail end water tank 12, wherein alkaline liquids are contained in the head end water tank 3, the middle water tanks 11 and the tail end water tank 12, an air inlet pipe 2 is disposed on a side wall of the head end water tank 3 near the bottom, the air inlet pipe 2 is communicated with the head end water tank 3, the air inlet pipe 2 is provided with a fan 1, the air in the acid mist plant is pumped into the system by the fan 1, and the air passes through the head end water tank 3, the middle water tanks 11 and the tail end water tank 12 in sequence, and is neutralized by each alkaline liquid in each water tank in sequence to remove acidity.
The top through connection of head end basin 3 has air duct 7, the lateral wall that the low reaches of air duct 7 communicate rather than adjacent middle part basin 11 is close to the bottom position, from the upper reaches to the low reaches, arbitrary adjacent middle part basin 11, the top of upper reaches side middle part basin 11 link up draws forth air duct 7, the bottom of air duct 7 extends to the lateral wall that the middle part basin 11 of adjacent downstream side is close to the bottom position, the lateral wall that a middle part basin 11 of low reaches is connected to terminal basin 12 through air duct 7 is close to the bottom position, the lateral wall of terminal basin 12 is close to the top position and is provided with gas outlet 13, the end of gas outlet 13 is flaring loudspeaker form. The air duct 7 guides the air from the water tank to the bottom of the next water tank, so that the air flow can be fully contacted with the alkaline liquid in each water tank.
The upper part of the gas guide tube 7 is provided with a horizontal section, a coagulation ball 8 is arranged in the horizontal section, a liquid collection bottle 9 is arranged below the coagulation ball 8, the liquid collection bottle 9 is communicated with the gas guide tube 7, and condensed water in the coagulation ball 8 falls into the liquid collection bottle 9; the bottom of the liquid collection bottle 9 is funnel-shaped, the bottom of the liquid collection bottle 9 is provided with a bottle mouth, and the bottle mouth is plugged with a bottle cap 10. The bottle cap 10 can be a cap in threaded connection, threads are arranged on the periphery of a bottle opening, threads are arranged on an inner ring of the bottle cap 10, and the bottle cap is covered through threaded connection. When the liquid level in the liquid collecting bottle 9 is high, the liquid in the liquid collecting bottle 9 is discharged by opening the bottle cap 10, or the alkaline liquid in the water tank is sampled and analyzed periodically, so that the liquid can be discharged from the liquid collecting bottle 9 for sampling.
The function of the coacervate 8 is to allow moisture in the air to encounter the contact object and the moisture accumulates, and a specific example of the coacervate 8 is given below: the coagulation ball 8 is a plurality of hollow balls which are nested, air holes 17 are distributed in each hollow ball, all the hollow balls penetrate through and are fixed on a fixing rod, the bottom of the fixing rod extends to be suspended in the liquid coagulation bottle 9, and the periphery of the hollow ball at the outermost side is fixed on the inner wall of an opening at the top of the liquid coagulation bottle 9 through supporting rods.
The head end water tank 3, the middle water tank 11 and the tail end water tank 12 are all internally provided with an air homogenizing plate 4 which is transverse to the horizontal cross section of the water tank, and the air homogenizing plate 4 is positioned below the liquid level. The gas homogenizing plate 4 comprises an upper layer of grid plate and a lower layer of grid plate. A grid is arranged between the upper and lower layers of grid plates. When the gas moves upwards from the lower part of the gas homogenizing plate 4, the gas is scattered by the gas homogenizing plate 4 to form smaller gas particles, the contact surface with the liquid is larger, the gas passes through the gas homogenizing plate 4, the ascending speed of the gas is reduced through the grating, the ascending path of the gas is disturbed, and the passing path of the gas is prolonged.
The head end water tank 3 and the middle water tank 11 are both provided with a condensation plate 6 which is transverse to the horizontal cross section of the head end water tank and the middle water tank, and a plurality of drainage ropes 5 which vertically extend to the liquid level are connected below the condensation plate 6. The condensation board 6 is the wire net, and condensation board 6 is provided with the circular shape pit 18 of a plurality of undercut, the bottom trompil 17 of pit 18, and the rope made of hemp that drainage rope 5 formed for the spiral winding, and the top of drainage rope 5 is the branch rope 19 of the many branches of scattering, and the inside wall all around in hole 17 is fixed in at the top of branch rope 19. When the gas passes through the condensation plate 6, moisture in the gas is accumulated by the condensation plate 6 to form water flow, the water flow flows into the corresponding concave pits 18 along the condensation plate 6, enters the concave pits 18 and flows into the periphery of the holes 17, and then is drained into liquid in the water tank by the drainage rope 5.
In order to overcome the pressure caused by the liquid level difference in the head end water tank 3 during opening and closing, a switch valve 14 is arranged between the fan 1 and the head end water tank 3, and the switch valve 14 is closed when the fan is not used. The upstream end of the switch valve 14 is provided with a temporary exhaust duct 16, the temporary exhaust duct 16 is communicated with the air inlet pipe 2, the temporary exhaust duct 16 is provided with a damping valve 15, and the temporary exhaust duct 16 is positioned on the downstream side of the fan 1. The purpose of the temporary exhaust duct 16 is that the blower 1 air flow can be exhausted through the temporary exhaust duct 16 with the on-off valve 14 closed, and used at the time of system start-up and shut-down.
The gas guide pipe 7 connected with the tail end water tank 12 is provided with an acidity detector, the acidity detector is arranged at the vertical section of the gas guide pipe 7 and is used for detecting the acidity concentration in gas, and each parameter in the system can be adjusted conveniently in time.
Referring to fig. 1 and 3, the inner bottoms of the head end water tank 3, the middle water tank 11 and the tail end water tank 12 are all provided with a rotating fan 20, the outer bottoms of the head end water tank 3, the middle water tank 11 and the tail end water tank 12 are provided with a motor 21, and a driving shaft 23 of the motor 21 passes through the bottoms of the corresponding head end water tank 3, the middle water tank 11 and the tail end water tank 12 and is clamped in a central sleeve 22 of the rotating fan 20. The periphery of the central sleeve 22 is provided with a plurality of fan blades, the central sleeve 22 is fixedly connected with a driving shaft 23 of the motor 21, the driving shaft 23 drives the central sleeve 22 to synchronously rotate and drives the fan blades to synchronously rotate, the driving shaft 23 of the motor 21 penetrates through the bottom of the corresponding water tank, a bearing is sleeved on the driving shaft 23, the bottom of the water tank is provided with a hole, the peripheral outer wall of the sealing shaft sleeve 24 is fixed with the inner wall of the hole in a sealing manner, the bearing of the driving shaft 23 is positioned in the sealing shaft sleeve 24, free rotation of the driving shaft 23 is realized, and water does not leak from the bottom of the water tank. The connection between the bearing and the sealing sleeve 24 is a mechanical sealing structure.
The method for purifying the acid-containing gas in the pickling plant comprises the following steps:
step 1: starting a system: firstly, assembling the acid-containing gas purification system of the acid car washing room, closing the switch valve 14, and respectively adding alkaline liquid into the head end water tank 3, the middle water tank 11 and the tail end water tank 12, wherein the liquid level of the alkaline liquid is higher than that of the gas homogenizing plate 4;
step 2: firstly, opening a damping valve 15, opening a fan 1, after the fan 1 is stabilized, opening a switch valve 14, closing the damping valve 15, enabling gas to enter a head-end water tank 3, enabling the gas to enter alkaline gas, enabling the gas to move upwards, enabling the gas to enter a space above the liquid level of the head-end water tank 3 through a gas homogenizing plate 4, enabling moisture in the gas to pass through a condensation plate 6, gathering the moisture, finally converging the moisture to a drainage rope 5, enabling the moisture to flow downwards along the drainage rope 5, and finally converging the moisture to alkaline liquid in the head-end water tank 3;
and step 3: the gas passing through the condensation plate 6 upwards enters the gas guide pipe 7 and finally enters the middle water tank 11, and the gas is circulated in sequence until the gas enters the tail end water tank 12, and the gas is discharged from the gas outlet 13 after emerging from the alkaline liquid.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The utility model provides an acid gas clean system that contains in pickling workshop which characterized in that: comprises a head end water tank, a plurality of middle water tanks and a tail end water tank, alkaline liquid is contained in the head end water tank, the middle water tanks and the tail end water tank, an air inlet pipe is arranged at the position, close to the bottom, of the side wall of the head end water tank, the air inlet pipe is communicated with the head end water tank, a fan is arranged on the air inlet pipe,
the top of the head end water tank is communicated with an air duct, the downstream of the air duct is communicated to the position, close to the bottom, of the side wall of one middle water tank adjacent to the air duct, the air duct is led out from the top of the middle water tank on the upstream side in a communicated mode, the bottom of the air duct extends to the position, close to the bottom, of the side wall of the middle water tank on the adjacent downstream side until the top of the middle water tank on the most downstream side is connected to the position, close to the bottom, of the side wall of the tail end water tank through the air duct, and an air outlet is formed in the position, close to the top, of the side wall of the tail end water tank;
the upper part of the gas guide tube is provided with a horizontal section, a coagulation ball is arranged in the horizontal section, a liquid collection bottle is arranged below the coagulation ball, the liquid collection bottle is communicated with the gas guide tube, and condensed water in the coagulation ball falls into the liquid collection bottle;
the head end water tank, the middle water tank and the tail end water tank are respectively internally provided with an air homogenizing plate which is transverse to the horizontal cross section of the head end water tank, the middle water tank and the tail end water tank, the air homogenizing plate is positioned below the liquid level, condensing plates which are transverse to the horizontal cross section of the head end water tank and the middle water tank are respectively arranged above the liquid level of the head end water tank and the middle water tank, and a plurality of vertical drainage ropes extending to the position below the liquid level are connected below the condensing plates.
2. The acid containing gas purification system of an acid pickling plant of claim 1, wherein: be provided with the ooff valve between fan and the head end basin, the upper reaches end of ooff valve is provided with interim exhaust pipe, interim exhaust pipe link up with the air-supply line, and interim exhaust pipe is provided with the damping valve, interim exhaust pipe is located the fan downstream side.
3. The acid containing gas purification system of an acid pickling plant of claim 1, wherein: the gas homogenizing plate comprises an upper layer of grid plate and a lower layer of grid plate, and a grid is arranged between the upper layer of grid plate and the lower layer of grid plate.
4. The acid containing gas purification system of an acid pickling plant of claim 1, wherein: the bottom of the inner sides of the head end water tank, the middle water tank and the tail end water tank is provided with a rotary fan, the bottom of the outer sides of the head end water tank, the middle water tank and the tail end water tank is provided with a motor, and a driving shaft of the motor penetrates through the bottom of the corresponding head end water tank, the bottom of the middle water tank and the bottom of the tail end water tank and is clamped in a center sleeve of the rotary fan.
5. The acid containing gas purification system of an acid pickling plant of claim 1, wherein: the condensing plate is a steel wire mesh, the condensing plate is provided with a plurality of downward-sunken circular pits, the bottom of each pit is provided with an opening, the drainage rope is a hemp rope formed by spirally winding, the top of the drainage rope is a branch rope with a plurality of scattered branches, and the top of the branch rope is fixed on the inner side wall around the hole.
6. The acid containing gas purification system of an acid pickling plant of claim 1, wherein: the bottom of gathering the liquid bottle is hourglass hopper-shaped, the bottom of gathering the liquid bottle is provided with the bottleneck, and the bottleneck shutoff is provided with the bottle lid.
7. The acid containing gas purification system of an acid pickling plant of claim 1, wherein: the hollow ball that gathers the ball for a plurality of nestings set up, every hollow ball all sets up and distributes and have the bleeder vent, and all hollow balls all run through to be fixed on a dead lever, and the bottom of dead lever extends to and hangs in gathering the liquid bottle, and the uncovered inner wall in the top that gathers the liquid bottle is fixed through the bracing piece around the hollow ball in the outside.
8. The acid containing gas purification system of an acid pickling plant of claim 1, wherein: the outlet is
The acid containing gas purification system of an acid pickling plant of claim 1, wherein: the air duct connected with the tail end water tank is provided with an acidity detector, and the acidity detector is arranged at the vertical section of the air duct.
9. The method for purifying the acid-containing gas in the pickling plant is characterized by comprising the following steps: the method comprises the following steps:
step 1: starting a system: firstly, assembling the acid-containing gas purification system of the pickling plant according to any one of claims 1 to 8, closing the switch valve, and respectively adding alkaline liquid into the head-end water tank, the middle water tank and the tail-end water tank, wherein the liquid level of the alkaline liquid is higher than the gas homogenizing plate;
step 2: firstly, opening a damping valve, opening a fan, opening a switch valve after the fan is stabilized, closing the damping valve, enabling gas to enter a head-end water tank, enabling the gas to enter alkaline gas, enabling the gas to move upwards, enabling the gas to enter a space above the liquid level of the head-end water tank through an air evening plate, enabling moisture in the gas to be gathered through a condensation plate, finally converging the moisture to a drainage rope, enabling the moisture to flow downwards along the drainage rope, and finally converging the moisture to alkaline liquid in the head-end water tank;
and step 3: the gas passing through the condensation plate upwards enters the gas guide pipe and finally enters the middle water tank, and the gas is circulated in sequence until the gas enters the tail end water tank, and the gas is discharged from the gas outlet after emerging from the alkaline liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741837.1A CN113521990A (en) | 2021-06-30 | 2021-06-30 | Acid-containing gas purification system and method for pickling workshop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741837.1A CN113521990A (en) | 2021-06-30 | 2021-06-30 | Acid-containing gas purification system and method for pickling workshop |
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| Publication Number | Publication Date |
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| CN113521990A true CN113521990A (en) | 2021-10-22 |
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| CN202110741837.1A Pending CN113521990A (en) | 2021-06-30 | 2021-06-30 | Acid-containing gas purification system and method for pickling workshop |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN212091650U (en) * | 2020-03-26 | 2020-12-08 | 佛山市三水正域铝型材制品有限公司 | Aluminum workpiece polishing acid mist waste gas treatment equipment |
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