CN114082291A - Equipment and method for recycling mercury in waste gas generated by metal smelting - Google Patents
Equipment and method for recycling mercury in waste gas generated by metal smelting Download PDFInfo
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- CN114082291A CN114082291A CN202111368896.5A CN202111368896A CN114082291A CN 114082291 A CN114082291 A CN 114082291A CN 202111368896 A CN202111368896 A CN 202111368896A CN 114082291 A CN114082291 A CN 114082291A
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- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 63
- 239000002912 waste gas Substances 0.000 title claims abstract description 37
- 238000003723 Smelting Methods 0.000 title claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 22
- 239000002184 metal Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004064 recycling Methods 0.000 title description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 41
- 238000001816 cooling Methods 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 20
- 238000009833 condensation Methods 0.000 claims description 19
- 230000005494 condensation Effects 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 16
- 238000003860 storage Methods 0.000 claims description 13
- 235000011149 sulphuric acid Nutrition 0.000 claims description 9
- 239000001117 sulphuric acid Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 238000005554 pickling Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000007790 scraping Methods 0.000 description 12
- 230000002457 bidirectional effect Effects 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000000110 cooling liquid Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- -1 avoid extravagant Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100001234 toxic pollutant Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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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
- B01D53/002—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 by condensation
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/64—Heavy metals or compounds thereof, e.g. mercury
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to the field of waste metal recovery, and particularly relates to equipment and a recovery method for recovering mercury in waste gas generated by metal smelting. The invention can recover mercury metal in metal smelting, and avoids discharging in air through multilayer efficient recovery.
Description
Technical Field
The invention belongs to the field of waste metal recovery, and particularly relates to equipment and a method for recovering mercury in waste gas generated by metal smelting.
Background
Mercury is a toxic pollutant and is present in many common metallurgical raw materials, with almost all zinc ores containing mercury, which is also present in lead ores, certain copper ores and even gold and pyrite. Roasting of ores in the non-ferrous metal smelting industry is generally carried out under a high-temperature condition, so that most of mercury in the ores enters smelting flue gas in a form of zero-valent mercury, and elemental mercury enters sludge, dust of a bag filter, product sulfuric acid or flue gas in the flue gas treatment process, so that further environmental pollution is caused.
In addition, although mercury is a pollutant, mercury is also a rare resource, and has wide application in smelting, instrument manufacturing, chemical industry, pharmaceutical industry, atomic energy industry and the like, the mercury removal technology mainly based on recovery is preferably adopted aiming at the characteristic of high mercury concentration in flue gas in the non-ferrous metal smelting industry, mercury cannot be completely recovered in the traditional mercury recovery process, mercury vapor and the like still remain in the discharged waste gas because the waste gas directly passes through concentrated sulfuric acid in a countercurrent manner and then is discharged into the air, and the recovery rate is not high only through sulfuric acid washing, so that the recovery efficiency is low.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides equipment and a method for recovering mercury in waste gas generated by metal smelting.
In order to achieve the purpose, the invention adopts the following technical scheme: a device and a method for recovering mercury in waste gas generated by metal smelting comprise the following steps:
s.1, filtering the waste gas, namely filtering solid particles in the waste gas;
s.2, pickling the waste gas, namely introducing the smelting waste gas into a dilute sulfuric acid solution for pickling;
s.3, condensing the waste gas, namely condensing the waste gas subjected to acid washing by using a condensing device, and further recovering mercury;
s.4, separating and collecting, namely performing mercury separation and collection on the liquid after the acid washing and the mercury liquid after the condensation;
the device for recovering mercury in waste gas generated by metal smelting is used in the matching of the steps S1-S4, and comprises a reaction box, a condensing box is fixedly arranged in the middle of the upper end of the reaction box, vent holes are formed in the bottom of the reaction box, second vent holes are formed in the periphery of the vent holes, a connecting rod is fixedly arranged at the upper end of each vent hole in the upper end face of the reaction box, a fan shaft is arranged in each vent hole in a penetrating mode, a fan shaft is arranged on the outer circumference of the fan shaft, a third vent hole is formed in the second vent hole, and sulfuric acid storage boxes are fixedly arranged on two sides of the third vent hole.
Preferably, bottom one side slides and is equipped with the switch in the sulphuric acid bin, the bottom is equipped with the recess in the sulphuric acid bin, it is equipped with the check valve to slide in the recess, one side is equipped with the pump machine in the recess, one side that is close to the one end blow vent of bottom in the reaction box has set firmly first subsider, stopper has set firmly on one side of first subsider upper end wall flexible casing has set firmly on the first subsider, it is equipped with the telescopic link to slide in the flexible casing, the output of telescopic link slides and is equipped with the connecting axle, the connecting axle slides outward and is equipped with the settlement plate, the settlement plate bottom is equipped with the spout, the connecting axle slides in the spout, one side of settlement plate slides and is equipped with first connecting axle.
Preferably, the below of the sulphuric acid bin of one side of first settling tank is equipped with the second settling tank, both sides are equipped with the spill soft board in the second settling tank, the below bottom of spill soft board has set firmly the unable adjustment base, the below of the first settling tank of one side of second settling tank is equipped with the settling chamber, the sliding of settling chamber bottom middle part is equipped with the flow valve, the flow valve is connected with settling chamber bottom through first spring, reaction box bottom settling chamber below is equipped with the mercury and collects the chamber, the mercury is collected the intracavity and is equipped with mercury collection device.
Preferably, the middle part of one side is equipped with the slip outside the condenser box and rotates the go-between, be equipped with the turning block in the turning ring, the cooling tube has set firmly outward to the one end of turning block, cooling tube length direction spiral is equipped with the spiral plate along the outer peripheral surface of cooling tube, be equipped with the cavity in the cooling tube, one side middle part has set firmly the condenser pipe in the condenser box.
Preferably, the condenser pipe outer circumferential surface has set firmly a plurality of two-way screw thread pieces along condenser pipe length direction, the one end of condenser pipe has set firmly the export, sliding seal piece on the export, one side of sealed piece is equipped with the seal membrane, the seal membrane links to each other with condenser box one side, sealed piece one side has the second spring, one side links to each other in second spring and the condenser box.
Preferably, a moving track is arranged on one side in the cooling pipe, a connecting slide block is arranged in the moving track in a sliding manner, the middle part of the connecting sliding block passes through the condensing tube and slides along the bidirectional threaded block on the outer surface of the condensing tube, a first telescopic shell is fixedly arranged in the joint of the two sides of the middle part of the connecting sliding block and the bidirectional threaded block, a first telescopic rod is arranged in the first telescopic shell in a sliding way and is connected with the connecting slide block through a third spring, the output end of the first telescopic rod is fixedly provided with a scraping rod, one end of the scraping rod is fixedly provided with a scraping block, a second telescopic shell is fixedly arranged outside the middle part of the scraping rod, a second telescopic rod is arranged in the second telescopic shell in a sliding way, the second telescopic rod is connected with the second telescopic shell through a fourth spring, a ventilation cavity is formed in the middle of the inside of the condensation pipe, a sealing cover is arranged on one side of the condensation box, and the sealing cover is communicated with one side of the cavity.
Has the beneficial effects that:
1. the waste gas after will pickling lets in condensing equipment, and the inside cooling pipe of drive condensing equipment when waste gas is let in rotates and makes the inside liquid of cooling pipe lower the temperature to gas and make the inside collection scraper blade of condensing equipment strike off the mercury on condensing pipe surface simultaneously and collect.
2. Through carrying out the secondary to mercurous liquid and subsiding, effectively retrieve unnecessary sulphuric acid liquid, avoid extravagant, concentrate the mercury of subsiding through concave surface hose and collect and make the mercury precipitate flow out through the bottom opening when needs.
3. And the settled mercury is cleaned by the liquid in the cooling pipe, and the condensed mercury is flushed into the pipeline and flows into the mercury collecting cavity for collection.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a side view of the present invention.
Fig. 4 is a sectional view taken along a-a in fig. 3.
Fig. 5 is an enlarged view of the structure at B in fig. 4.
Fig. 6 is an enlarged view of the structure at C in fig. 4.
Fig. 7 is an enlarged view of the structure at D in fig. 4.
In the figure, a reaction box 10, a condensation box 11, a vent 12, a second vent 13, a connecting rod 14, a fan shaft 15, a fan shaft 16, a third vent 17, a sulfuric acid storage tank 18, a switch 19, a groove 20, a one-way valve 21, a pump 22, a first settling tank 23, a telescopic shell 24, a telescopic rod 25, a connecting shaft 26, a first connecting shaft 27, a limiting block 28, a sliding chute 29, a second settling tank 30, a concave soft plate 31, an inclined base 32, a settling chamber 33, a flow valve 34, a first spring 35, a mercury collecting chamber 36, a mercury collecting device 37, a cooling pipe 38, a spiral plate 39, a rotary connecting ring 40, a rotary block 41, a cavity 42, a condensation pipe 43, a bidirectional threaded block 44, an outlet 45, a sealing block 46, a sealing film 47, a second spring 48, a vent chamber 49, a moving track 50, a connecting slide block 51, a first telescopic shell 52, a first telescopic rod 53, a third spring 54, a scraping rod 55, a second telescopic rod, a sealing block, a sealing plate, a sealing, Scraping block 56, second telescopic shell 57, second telescopic rod 58, fourth spring 59, sealing cover 60 and settling plate 61.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
In the description of the present invention, it should be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
With reference to fig. 1 to 7, an apparatus and a method for recovering mercury from a waste gas generated by metal smelting include the following steps:
s1, filtering waste gas, namely filtering solid particles in the waste gas;
s2, pickling waste gas, namely introducing the smelting waste gas into a dilute sulfuric acid solution for pickling;
s3, condensing the waste gas, namely condensing the waste gas subjected to acid washing by using a condensing device, and further recovering mercury;
s4, separating and collecting, namely performing mercury separation and collection on the acid-washed liquid and the condensed mercury liquid;
the device for recovering mercury in waste gas generated by metal smelting is matched with steps S1-S4, and comprises a reaction box 10, wherein a condensation box 11 is fixedly arranged in the middle of the upper end of the reaction box 10, a vent 12 is arranged in the middle of the bottom of the reaction box 10, second vents 13 are arranged outside partition plates around the vent 12, a connecting rod 14 is fixedly arranged at the upper end of the vent 12 in the upper end face of the reaction box 10, a fan shaft 15 is arranged in the manner that one end of the connecting rod 14 extends into the vent 12 and slides in the vent 12, a fan shaft 16 is arranged on the outer circumference of the fan shaft 15, third vents 17 are arranged outside the partition plates of the second vents 13, and sulfuric acid storage boxes 18 are fixedly arranged on two sides of the third vents 17.
Further, the bottom slides in sulphuric acid storage tank 18 on one side and is equipped with switch 19, the bottom is equipped with recess 20 in sulphuric acid storage tank 18, it is equipped with check valve 21 to slide in the recess 20, one side is equipped with pump machine 22 in the recess 20, one side that is close to the one end blow vent 12 of bottom in the reaction box 10 has set firmly first subsider 23, set firmly flexible casing 24 on the first subsider 23 of stopper 28 has been set firmly on 23 upper end wall one side of first subsider, it is equipped with telescopic link 25 to slide in flexible casing 24, the output of telescopic link 25 slides and is equipped with connecting axle 26, connecting axle 26 external sliding is equipped with flitch 61, flitch 61 bottom is equipped with spout 29, connecting axle 26 slides in spout 29, one side of flitch 61 slides and is equipped with first connecting axle 27.
Further, a second settling tank 30 is arranged below the sulfuric acid storage tank 18 on one side of the first settling tank 23, concave soft plates 31 are arranged on two sides in the second settling tank 30, an inclined base 32 is fixedly arranged at the bottom of the lower portion of each concave soft plate 31, a settling chamber 33 is arranged below the first settling tank 23 on one side of the second settling tank 30, a flow valve 34 is arranged in the middle of the bottom of the settling chamber 33 in a sliding mode, the flow valve 34 is connected with the bottom of the settling chamber 33 through a first spring 35, a mercury collecting chamber 36 is arranged below the settling chamber 33 at the bottom of the reaction box 10, and a mercury collecting device 37 is arranged in the mercury collecting chamber 36.
Furthermore, a sliding rotary connecting ring 40 is arranged outside the middle part of one side in the condenser box 11, a rotating block 41 is arranged in the rotary connecting ring 40, a cooling pipe 38 is fixedly arranged outside one end of the rotating block 41, a spiral plate 39 is spirally arranged on the outer circumferential surface of the cooling pipe 38 along the length direction of the cooling pipe 38, a cavity 42 is arranged in the cooling pipe 38, and a condenser pipe 43 is fixedly arranged in the middle part of one side in the condenser box 11.
Furthermore, a plurality of bidirectional threaded blocks 44 are fixedly arranged on the outer circumferential surface of the condensation pipe 43 along the length direction of the condensation pipe 43, an outlet 45 is fixedly arranged at one end of the condensation pipe 43, a sealing block 46 slides on the outlet 45, a sealing film 47 is arranged on one side of the sealing block 46, the sealing film 47 is connected with one side of the condensation box 11, a second spring 48 is arranged below one side of the sealing block 46, and the second spring 48 is connected with one side in the condensation box 11.
Further, a moving track 50 is arranged on one side in the cooling pipe 38, a connecting slide block 51 is slidably arranged in the moving track 50, the middle part of the connecting slide block 51 penetrates through the condenser pipe 43 and slides along the outer surface of the condenser pipe 43 along the bidirectional thread block 44, a first telescopic shell 52 is fixedly arranged in the joint of the two sides of the middle part of the connecting slide block 51 and the bidirectional thread block 44, a first telescopic rod 53 is slidably arranged in the first telescopic shell 52, the first telescopic rod 53 is connected with the connecting slide block 51 through a third spring 54, a scraping rod 55 is fixedly arranged at the output end of the first telescopic rod 53, a scraping block 56 is fixedly arranged at one end of the scraping rod 55, a second telescopic shell 57 is fixedly arranged outside the middle part of the scraping rod 55, a second telescopic rod 58 is slidably arranged in the second telescopic shell 57, the second telescopic rod 58 is connected with the second telescopic shell 57 through a fourth spring 59, a ventilation cavity 49 is arranged in the middle part of the condenser pipe 43, a sealing cover 60 is arranged on one side of the condenser tank 11, the sealing cover 60 communicates with one side of the cavity 42.
Principle of operation
When smelting waste gas enters the reaction box 10 through the vent 12, the vent 12 passes through a notch at the bottom of the second vent 13 for acid washing by rotating the fan shaft 16, flows into the condensation box 11 from the third vent 17 for condensation after acid washing, and finally flows out of the condensation box 11 through the vent cavity 49.
The concentrated sulfuric acid cleaning liquid is stored in the sulfuric acid storage tank 18, the cleaning liquid flows into the joint of the third vent port 17 and the second vent port 13 through the switch 19, the joint of the bottom of the third vent port 17 and the bottom of the second vent port 13 is provided with a groove with the settling plate 61, when waste gas passes through the second vent port 13, the cleaning liquid passes through the accumulated part of the cleaning liquid at the bottom of the second vent port 13 to flow into the third vent port 17, when the flue gas is cleaned by sulfuric acid, mercury particles are generated, the mercury particles can be condensed at the bottom of the liquid after settling, the settling plate 61 is opened at intervals to enable the deposit to flow down into the second settling tank 30, and the bottom mercury particles slide down to the inclined position of the settling plate 61 through the telescopic rod 25 to flow out.
And (3) continuing secondary deposition after the mercury enters the upper surface of the second settling tank 30, pumping redundant liquid on the upper surface of the second settling tank 30 into the sulfuric acid storage tank 18 while driving the concave soft plate 31 to lift up to enable bottom deposits to fall off after a period of time, enabling the mercury to enter the upper surface of the inclined base 32, cleaning mercury particles on the surface of the inclined base 32 through cooling liquid in the spiral plate 39, depositing on the upper surface of the flow valve 34, enabling the deposited mercury to flow into the mercury collection cavity 36 through the bottom of the flow valve 34, and recovering the mercury through the mercury collection device 37.
The gas after acid washing enters the condensation box 11 through the third vent 17 and flows through the outer surface of the spiral plate 39, the spiral plate 39 is pushed to enable the cooling pipe 38 to rotate and enter the cooling pipe 38 through a notch on the outer surface of the cooling pipe 38 while flowing, the waste gas is primarily cooled through the cooling liquid in the spiral plate 39 while flowing through the outer surface of the spiral plate 39, the cooled gas is condensed by impacting the outer surface of the condensation pipe 43, the condensed solid particles are attached to the outer surface of the condensation pipe 43 and rotate back and forth on the outer surface of the first telescopic rod 53 through the connecting sliding block 51 to scrape the attachments on the outer surface of the first telescopic rod 53, the middle part of the connecting sliding block 51 is provided with a thread groove which is meshed with the bidirectional thread block 44, the bidirectional thread block 44 is a bidirectional thread and can return when the connecting sliding block 51 slides to one end, the water level outside the connecting sliding block 51 in the moving track 50 smoothly drives the connecting sliding block 51 to slide through the rotation of the cooling pipe 38, the scraping block 56 is arranged in the middle of the connecting sliding block 51 and can scrape the outer surface of the first telescopic rod 53, scraped attachments are stored on one side of the second telescopic rod 58, when the connecting sliding block 51 moves to the sealing block 46, the sealing block 46 is opened through the scraping rod 55, the second telescopic rod 58 is squeezed, and the inner attachments flow into the outlet 45 and flow into the upper surface of the concave soft plate 31 through a pipeline.
The cooling liquid enters the cavity 42 through the sealing cover 60 and flows out from the port of the cavity 42 to be communicated with the attachment flowing pipeline, and the attachments in the channel are flushed onto the concave soft plate 31 for cleaning and are deposited and collected.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.
Claims (6)
1. A device and a method for recovering mercury in waste gas generated by metal smelting comprise the following steps:
s1, filtering waste gas, namely filtering solid particles in the waste gas;
s2, pickling the waste gas, namely introducing the smelting waste gas into a dilute sulfuric acid solution for pickling;
s3, condensing the waste gas, namely condensing the waste gas subjected to acid washing by using a condensing device, and further recovering mercury;
s4, separating and collecting, namely performing mercury separation and collection on the acid-washed liquid and the condensed mercury liquid;
wherein, the steps S1-S4 are matched with a device for recovering mercury in waste gas generated by metal smelting, the device for recovering mercury in waste gas generated by metal smelting comprises a reaction box (10), it is characterized in that a condensing box (11) is fixedly arranged in the middle of the upper end of the reaction box (10), the middle part of the bottom of the reaction box (10) is provided with an air vent (12), the periphery of the air vent (12) is provided with a second air vent (13) outside a partition plate, the upper end of the vent hole (12) in the upper end surface of the reaction box (10) is fixedly provided with a connecting rod (14), one end of the connecting rod (14) extends into the vent hole (12) and is provided with a fan shaft (15) in a sliding way, a fan shaft (16) is arranged on the outer circumference of the fan shaft (15), a third air vent (17) is arranged outside the partition board of the second air vent (13), and a sulfuric acid storage tank (18) is fixedly arranged on two sides of the third vent hole (17).
2. The apparatus and method for recovering mercury from exhaust gas produced by metal smelting according to claim 1, wherein: the utility model discloses a sulfuric acid storage tank, including sulphuric acid storage tank (18), bottom one side slides and is equipped with switch (19), bottom is equipped with recess (20) in sulphuric acid storage tank (18), it is equipped with check valve (21) to slide in recess (20), one side is equipped with pump machine (22) in recess (20), one side that is close to the one end blow vent (12) of bottom in reaction box (10) has set firmly first subsider (23), stopper (28) have set firmly on first subsider (23) upper end wall one side flexible casing (24) have set firmly on first subsider (23), it is equipped with telescopic link (25) to slide in flexible casing (24), the output of telescopic link (25) slides and is equipped with connecting axle (26), connecting axle (26) outer slip is equipped with settlement plate (61), settlement plate (61) bottom is equipped with spout (29), connecting axle (26) slide in spout (29), one side of the settling plate (61) is provided with a first connecting shaft (27) in a sliding manner.
3. The apparatus and method for recovering mercury from exhaust gas produced by metal smelting according to claim 2, wherein: the utility model discloses a reactor, including reaction box (10), sulfuric acid storage box (18) of one side of first settling tank (23) is equipped with second settling tank (30) below of one side sulphuric acid bin (18), both sides are equipped with spill soft board (31) in second settling tank (30), the below bottom of spill soft board (31) has set firmly tilt base (32), the below of the first settling tank (23) of one side of second settling tank (30) is equipped with subsides chamber (33), subsides chamber (33) bottom middle part and slides and be equipped with flow valve (34), flow valve (34) are connected bottom subside chamber (33) through first spring (35), reaction box (10) bottom subside chamber (33) below is equipped with mercury and collects chamber (36), be equipped with mercury collection device (37) in mercury collection chamber (36).
4. The apparatus and method for recovering mercury from exhaust gas produced by metal smelting according to claim 1, wherein: the utility model discloses a condenser, including condenser box (11), one side middle part is equipped with outside the slip and rotates go-between (40), be equipped with turning block (41) in rotation go-between (40), cooling tube (38) have set firmly outward to the one end of turning block (41), cooling tube (38) outer circumferential surface is equipped with spiral plate (39) along cooling tube (38) length direction spiral, be equipped with cavity (42) in cooling tube (38), condenser box (11) one side middle part has set firmly condenser pipe (43).
5. The apparatus and method for recovering mercury from exhaust gas produced by metal smelting according to claim 4, wherein: condenser pipe (43) outer circumferential surface has set firmly a plurality of two-way screw thread pieces (44) along condenser pipe (43) length direction, the one end of condenser pipe (43) has set firmly export (45), sliding seal piece (46) on export (45), one side of sealed piece (46) is equipped with seal membrane (47), seal membrane (47) link to each other with condenser box (11) one side, sealed piece (46) one side has second spring (48), second spring (48) link to each other with one side in condenser box (11).
6. The apparatus and method for recovering mercury from exhaust gas produced by metal smelting according to claim 5, wherein: one side is equipped with removal track (50) in cooling tube (38), it is equipped with link block (51) to slide in removal track (50), link block (51) middle part is passed condenser pipe (43) and is slided along two-way screw block (44) at condenser pipe (43) surface, link block (51) middle part both sides and two-way screw block (44) junction internal fixation have first telescopic shell (52), it is equipped with first telescopic link (53) to slide in first telescopic shell (52), first telescopic link (53) link to each other with link block (51) through third spring (54), the output of first telescopic link (53) has set firmly strikes off pole (55), the one end that strikes off pole (55) has set firmly strikes off piece (56), strike off pole (55) middle part external fixation have second telescopic shell (57), it is equipped with second telescopic link (58) to slide in second telescopic shell (57), the second telescopic rod (58) is connected with the second telescopic shell (57) through a fourth spring (59), a ventilation cavity (49) is formed in the middle of the interior of the condensation pipe (43), a sealing cover (60) is arranged on one side of the condensation box (11), and the sealing cover (60) is communicated with one side of the cavity (42).
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| CN202111368896.5A CN114082291A (en) | 2021-11-18 | 2021-11-18 | Equipment and method for recycling mercury in waste gas generated by metal smelting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115301468A (en) * | 2022-07-27 | 2022-11-08 | 陈庭福 | Aluminum alloy surface treatment device |
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