CN111592249A - Device for treating toxic and harmful gas by using cooling machine - Google Patents
Device for treating toxic and harmful gas by using cooling machine Download PDFInfo
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- CN111592249A CN111592249A CN202010560223.9A CN202010560223A CN111592249A CN 111592249 A CN111592249 A CN 111592249A CN 202010560223 A CN202010560223 A CN 202010560223A CN 111592249 A CN111592249 A CN 111592249A
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- 238000001816 cooling Methods 0.000 title claims abstract description 34
- 231100000331 toxic Toxicity 0.000 title claims description 27
- 230000002588 toxic effect Effects 0.000 title claims description 27
- 238000002156 mixing Methods 0.000 claims abstract description 46
- 231100000614 poison Toxicity 0.000 claims abstract description 42
- 230000007096 poisonous effect Effects 0.000 claims abstract description 42
- 239000007789 gas Substances 0.000 claims description 106
- 238000013016 damping Methods 0.000 claims description 47
- 238000007789 sealing Methods 0.000 claims description 32
- 238000005192 partition Methods 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 239000004568 cement Substances 0.000 abstract description 23
- 238000012545 processing Methods 0.000 abstract description 10
- 238000000354 decomposition reaction Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000001354 calcination Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000002894 chemical waste Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011268 retreatment Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/47—Cooling ; Waste heat management
- C04B7/475—Cooling ; Waste heat management using the waste heat, e.g. of the cooled clinker, in an other way than by simple heat exchange in the cement production line, e.g. for generating steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0206—Cooling with means to convey the charge
- F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
- F27D15/022—Cooling with means to convey the charge comprising a cooling grate grate plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
A device for treating poisonous and harmful gas by using a cooler belongs to the technical field of poisonous and harmful gas treatment equipment. The method is characterized in that: the air mixing device comprises an air supply fan, an air mixing valve and a grate cooler (10), wherein an air inlet of the air supply fan is communicated with an air outlet of an input pipe (9), an air outlet of the air supply fan is communicated with an air inlet of the grate cooler (10), and the air mixing valve is communicated with an air inlet of the air supply fan. This utilize air supply fan of cooler processing poisonous and harmful gas can guarantee that the input tube keeps little negative pressure, and then has avoided poisonous and harmful gas to escape outward, mix the blast gate and can in time supply the air for air supply fan, guarantee that gas can smoothly and stably send into in the comb formula cooler, poisonous and harmful gas is in the gas poisonous and harmful composition in the cooling cement clinker while, the gas after the decomposition enters into rotary kiln or decomposition furnace, comb poisonous and harmful gas once more, can not cause the influence or destroy cement clinker's production technology.
Description
Technical Field
A device for treating poisonous and harmful gas by using a cooler belongs to the technical field of poisonous and harmful gas treatment equipment.
Background
Along with the guidance of national environmental protection policies and the gradual improvement of technologies for cooperatively disposing various wastes by a cement kiln, the work of cooperatively recycling the wastes by the cement kiln is gradually developed in cement enterprises, various wastes such as municipal domestic waste, water treatment sludge, polluted soil, biological cultivation wastes, chemical wastes, hazardous wastes, industrial wastes and the like can generate various toxic and harmful gases with peculiar smell or odor, the storage and transportation generally require a closed measure, and the gas generated by the storage facility requiring negative pressure operation can be discharged into the atmosphere after being processed.
With the tightening of national environmental protection policies and the increasing of environmental protection governing force, small-sized production and processing enterprises which are easy to generate odor and smell escape have production difficulties, such as furniture, mechanical parts, small leather processing, toy clothes, small handicraft, daily chemical engineering and the like.
The clinker calcining zone of the novel dry-method cement kiln has the characteristics of large thermal field space, high stability and high combustion temperature, and has natural technical advantages and cost advantages compared with a common incinerator, the pulverized coal sprayed into the incinerator is violently combusted, the gas temperature reaches 1750 ℃, the material temperature reaches 1450 ℃, and the kiln tail gas temperature reaches 1050 ℃. After toxic and harmful gas enters a calcining area of the rotary kiln, inorganic substances, organic substances, biological microorganisms and the like with toxic and complex structures in the gas can be decomposed into simple molecular states at high temperature, so that toxic and harmful components are thoroughly destroyed and detoxified, pollution is eliminated, and hidden danger is not left.
The method is characterized in that toxic and harmful gases are introduced into a high-temperature calcining area of a cement kiln for harmless treatment, a gas preparation device is required to be newly added, meanwhile, the necessary transformation is required to be carried out on the original cement equipment, and two main problems need to be solved. Firstly, the toxic and harmful gases are treated on the premise of not damaging or less interfering the production process conditions of the cement clinker, the adverse effects on the operation and cost of the cement clinker production are reduced as much as possible on the premise of ensuring the quality of the cement clinker, and secondly, the environmental safety requirements of a toxic and harmful gas treatment system are ensured, the escape of the gases cannot occur, and the new environmental pollution of a production post is caused.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, and the device for treating the poisonous and harmful gas by using the cooling machine, which can avoid the escape of the poisonous and harmful gas and the environmental pollution, is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: this utilize cooler to handle poisonous and harmful gas's device, its characterized in that: the air mixing valve is communicated with the air inlet of the air supply fan.
Preferably, the air supply fan comprises an inflatable beam fan and an air chamber cooling fan, an air inlet of the inflatable beam fan is communicated with the input pipe, an air outlet of the inflatable beam fan is communicated with an inflatable beam of the grate cooler, an air outlet of the air chamber cooling fan is communicated with an air chamber of the grate cooler, and the air mixing valve is communicated with an air inlet of the inflatable beam cooling fan.
Preferably, the grate cooler comprises a cooler main body, and a grate plate and an inflatable beam which are arranged in the cooler main body, wherein the grate plate is provided with a plurality of grate plates arranged on the upper side of the inflatable beam, the grate plates are spliced into an inclined grate bed gradually decreasing from a feeding hole to a discharging hole, an air chamber is formed on the lower side of the grate bed, an air outlet of an air chamber cooling fan is communicated with the air chamber, the lower part of each grate plate is communicated with the inflatable beam, and an air outlet of an inflatable beam fan is communicated with the inflatable beam.
Preferably, the top of the grid plate is provided with a plurality of air outlets, and the grid plate is provided with a communication channel for communicating the air filling beam with the air outlets.
Preferably, a partition plate is arranged in the cooler body, a plurality of independent air chambers are formed at the lower side of the grate bed, and each air chamber is connected with an independent air chamber cooling fan.
Preferably, the air-conditioning system further comprises an air inlet fan and a buffer box, wherein an air inlet of the air inlet fan is communicated with an air outlet of the input pipe, an air outlet of the air inlet fan is communicated with an air inlet of the buffer box, an air inlet of the air supply fan is communicated with an air outlet of the buffer box, and the air mixing valve is communicated with an air inlet of the buffer box.
Preferably, the air mixing valve comprises a mechanical air mixing valve and an electric air mixing valve, and the mechanical air mixing valve and the electric air mixing valve are communicated with the air inlet of the buffer tank.
Preferably, the mechanical air mixing valve comprises a valve body, a valve plate and a damping device, an input port and an output port are formed in the valve body, the valve plate is arranged in the valve body and arranged between the input port and the output port, a sealing portion matched with the valve plate is arranged in the valve body, and the damping device is connected with the valve plate.
Preferably, the air conditioner further comprises an exhaust device, an air outlet of the input pipe is communicated with an air inlet of the air supply fan and an air inlet of the exhaust device, an input valve is arranged between the air outlet of the input pipe and the air inlet of the air supply fan, and an exhaust valve is arranged between the air outlet of the input pipe and the exhaust device.
Preferably, the exhaust device comprises a gas treatment device and a chimney, a gas inlet of the gas treatment device is communicated with a gas outlet of the input pipe, and a gas outlet of the gas treatment device is communicated with the chimney.
Compared with the prior art, the invention has the beneficial effects that:
1. this utilize air supply fan of cooler processing poisonous and harmful gas can guarantee that the input tube keeps the slight negative pressure, and then has avoided poisonous and harmful gas to escape outward, cause the pollution to the environment, mix the blast gate and can in time supply air for air supply fan, guarantee that gas can smoothly and stably send into in the comb formula cooler, poisonous and harmful gas is in the cooling cement clinker toxic and harmful component in the gas is decomposed, gas after the decomposition enters into rotary kiln or decomposition furnace, comb poisonous and harmful gas once more, can not cause the influence or destroy to cement clinker's production technology, handle thoroughly poisonous and harmful gas.
2. The air chamber cooling fan sends air into the air chamber, so that the cooling of cement clinker in the grate cooler can be assisted, and the leakage of toxic and harmful gas can be avoided.
3. The air blown into the air chamber by the air chamber cooling fan enters the upper side of the grate bed through the gaps of the grate plates so as to assist the cooling of cement clinker.
4. The connecting channel on the grate plate communicates the air filling beam with the air outlet, so that toxic and harmful gas can enter the upper side of the grate bed through the air outlet on the grate plate, and the toxic and harmful gas can be ensured to contact and decompose cement clinker.
5. Every air chamber all is connected with its cooling blower to can guarantee that the downside air of every whole comb bed is sufficient, can enough guarantee that cement clinker cooling effect is good, can avoid again that poisonous and harmful gas flows backward to cause the leakage, the polluted environment.
6. The air inlet fan is matched with the air mixing valve, so that the air pressure of the buffer box is stable, the air pressure at the air inlet of the air supply fan is stable, and the stability of the gas sent into the grate cooler by the air supply fan is guaranteed.
7. The air mixing valve comprises a mechanical air mixing valve and an electric air mixing valve, and the pressure stability of an air inlet of the air supply fan is further ensured.
8. The valve plate of machinery air mixing valve is mutually supported with the sealing of valve body, with input port and delivery outlet disconnection, this machinery air mixing valve is vertical when using, rely on the tight sealing of gravity compacting of valve plate, thereby realize sealedly, and rely on the pressure differential of both sides to realize opening between valve plate and the sealing about the valve plate, thereby realized that the pressure of maintaining the baffle-box is in normal range, damping device can produce the damping to the motion of valve plate, avoid the valve plate velocity of motion too fast and the problem of vibration and impact appears, it is reliable to have guaranteed to seal between valve plate and the sealing, and then guaranteed machinery air mixing valve reliable operation.
9. Can adjust poisonous and harmful gas's flow direction through discharge valve and input valve, when the rotary kiln during operation, poisonous and harmful gas directly enters into the combustor and burns, when the rotary kiln is out of work, poisonous and harmful gas directly discharges to the atmosphere after exhaust apparatus handles, has realized poisonous and harmful gas's continuous processing.
10. The gas treatment device can treat toxic and harmful gas, and the treated gas is discharged to the air through a chimney, so that the environment is prevented from being polluted.
Drawings
Fig. 1 is a schematic structural view of an apparatus for treating noxious and harmful gases using a cooler.
Fig. 2 is a left side sectional view of the grate cooler.
FIG. 3 is a schematic sectional front view of the grate cooler.
Fig. 4 is a front cross-sectional view of the mechanical air mixing valve.
In the figure: 1. the device comprises an input valve 2, a gas processing device 3, an air inlet fan 4, a mechanical air mixing valve 5, an electric air mixing valve 6, a first inflatable beam fan 7, a second inflatable beam fan 8, an air chamber cooling fan 9, an input pipe 10, a grate cooler 11, an air chamber 12, a chimney 13, a rotary kiln 14, an exhaust fan 15, a grate bed 16, a grate plate 17, a buffer tank 18, a connecting pipe 19, an inflatable cross beam 20, an inflatable longitudinal beam 21, a cleaning hole 22, a partition plate 23, a valve rod 24, an upper sliding sleeve 25, a sealing gasket 26, a lower sliding sleeve 27, a damping end cover 28, an O-shaped sealing ring 29, a damping piston 30, a damping cup 31, a valve body 3101, a micro-pressure cavity 3102, a normal pressure cavity 32, a spring 33, an adjusting nut 34, a valve plate 35 and a.
Detailed Description
Fig. 1 to 4 are preferred embodiments of the present invention, and the present invention will be further described with reference to fig. 1 to 4.
A device for treating toxic and harmful gases by using a cooling machine comprises an air supply fan, an air mixing valve and a grate type cooling machine 10, wherein an air inlet of the air supply fan is communicated with an air outlet of an input pipe 9, an air outlet of the air supply fan is communicated with an air inlet of the grate type cooling machine 10, and the air mixing valve is communicated with an air inlet of the air supply fan. This utilize air supply fan of cooler processing poisonous and harmful gas can guarantee that input tube 9 keeps the slight negative pressure, and then has avoided poisonous and harmful gas to escape outward, cause the pollution to the environment, the air mixing valve can in time supply air for air supply fan, guarantee that gas can be smoothly stable send into in comb formula cooler 10, poisonous and harmful gas is in the cooling cement clinker poisonous and harmful component in the gas is decomposed, the gas after the decomposition enters into rotary kiln 13 or decomposition furnace, comb poisonous and harmful gas once more, can not cause the influence or destroy cement clinker's production technology, handle thoroughly poisonous and harmful gas.
The present invention is further described with reference to the following detailed description, however, it should be understood by those skilled in the art that the detailed description given herein with respect to the accompanying drawings is for better explanation and that the present invention is not necessarily limited to the specific embodiments, but rather, for equivalent alternatives or common approaches, may be omitted from the detailed description, while still remaining within the scope of the present application.
Specifically, the method comprises the following steps: as shown in FIGS. 1 to 3: this utilize cooler to handle poisonous and harmful gas's device still includes exhaust apparatus, air intake fan 3 and baffle-box 17, the gas outlet of input tube 9 is linked together with exhaust apparatus's air inlet and air intake fan 3's air inlet simultaneously, and be provided with input valve 1 between the gas outlet of input tube 9 and air intake fan 3's the air inlet, be provided with discharge valve between the gas outlet of input tube 9 and the exhaust apparatus's air inlet, can adjust poisonous and harmful gas's trend through input valve 1 and discharge valve, can enough handle poisonous and harmful gas through comb formula cooler 10, can directly discharge in the air after again through exhaust apparatus handles poisonous and harmful gas.
The exhaust device comprises a gas treatment device 2 and a chimney 12, a gas inlet of the gas treatment device 2 is connected with an exhaust valve in series and then communicated with a gas outlet of the input pipe 9, and a gas outlet of the gas treatment device 2 is communicated with the chimney 12. In the present embodiment, the gas treatment device 2 is an activated carbon adsorption device, and may be a chemical treatment device.
The exhaust device also comprises an exhaust fan 14, the air inlet of the exhaust fan 14 is communicated with the air outlet of the gas processing device 2, and the air outlet of the exhaust fan 14 is communicated with the chimney 12. A shutoff valve is provided between the exhaust fan 14 and the gas processing apparatus 2.
The air outlet of air intake fan 3 is linked together with the air inlet of baffle-box 17, and the air inlet of air supply fan is linked together with the gas outlet of baffle-box 17 to keep little negative pressure in guaranteeing baffle-box 17, can also guarantee that air supply fan's air inlet atmospheric pressure is stable, install manometer 35 on the baffle-box 17 for atmospheric pressure in the real-time supervision baffle-box 17.
Mix the blast gate and be linked together with the air inlet of baffle-box 17, in this embodiment, trade the blast gate and include that machinery mixes blast gate 4 and electronic blast gate 5 that mixes, machinery mixes blast gate 4 and electronic blast gate 5 and all is linked together with the air inlet of baffle-box 17 to guarantee that the atmospheric pressure in the baffle-box 17 is stable.
The grate cooler 10 comprises a cooler main body, grate plates 16 and an inflatable beam, wherein the grate plates 16 are arranged in the cooler main body, the grate plates 16 are arranged on the upper side of the inflatable beam, the grate plates 16 are spliced into a grate bed 15, the grate bed 15 is in an inclined shape with a feed port gradually downward to a discharge port, an air chamber 11 is formed on the lower side of the grate bed 15, and a gap for communicating the air chamber 11 with the upper side of the grate bed 15 is arranged between every two adjacent grate plates 16. The inflatable beam comprises an inflatable cross beam 19 and an inflatable longitudinal beam 20, the inflatable cross beam 19 and the inflatable longitudinal beam 20 are both arranged on the lower side of the grate bed 15, the inflatable cross beam 19 is arranged between the inflatable longitudinal beam 20 and the grate bed 15, the inflatable longitudinal beam 20 is arranged along the direction from the feed inlet to the discharge outlet, the inflatable longitudinal beam 20 is in an inclined shape parallel to the grate bed 15, and the inflatable cross beam 19 is horizontally arranged. The inflatable cross beams 19 and the inflatable longitudinal beams 20 are both in a cylindrical shape with two closed ends, and each inflatable cross beam 19 is communicated with the inflatable longitudinal beam 20 adjacent to the inflatable cross beam through a connecting pipe 18. Each inflatable cross beam 19 is provided with a plurality of grid plates 16 along the length direction, the upper side of each grid plate 16 is provided with a plurality of air outlets, and the grid plates 16 are provided with communication channels for communicating the inner cavity of the inflatable cross beam 19 with the air outlets of the grid plates 16, so that the air in the inflatable cross beam 19 is discharged to the upper sides of the grid plates 16 through the air outlets of the grid plates 16. Every connecting pipe 18 is last all to be provided with clearance hole 21, and clearance hole 21 passes through the closing plate and seals to conveniently clear up connecting pipe 18.
The lower side of the grate bed 15 is provided with a plurality of partition plates 22, the partition plates 22 are vertical to the inflatable longitudinal beams 20, the cavity on the lower side of the grate bed 15 is divided into a plurality of independent air chambers 11 by the partition plates 22, and the independent air chambers 11 are arranged side by side along the direction from the feed inlet to the discharge outlet. Each air chamber 11 is communicated with the upper side of the grate bed 15 through the gap of the adjacent grate plate 16 corresponding to the upper side. The partitions 22 also divide the inflatable stringer 20 into sections corresponding to the chambers 11.
Air supply fan is including aerifing roof beam fan and air chamber cooling blower 8, and every air chamber 11 all is connected with air chamber cooling blower 8, and air chamber cooling blower 8's air inlet and atmosphere intercommunication, the air outlet is linked together with the air chamber 11 that corresponds.
The inflatable beam fan comprises a first inflatable beam fan 6 and a second inflatable beam fan 7, air inlets of the first inflatable beam fan 6 and the second inflatable beam fan 7 are communicated with an air outlet of the buffer box 17, and an air outlet of the first inflatable beam fan 6 and an air outlet of the second inflatable beam fan 7 are communicated with the inflatable longitudinal beam 20. In this embodiment, the air outlet of the first air-charging beam fan 6 is communicated with the air-charging longitudinal beam 20 corresponding to the air chamber 11 close to the feeding port, and the air outlet of the second air-charging beam fan 7 is communicated with the air-charging longitudinal beams 20 corresponding to the two air chambers 11 close to the feeding port, so as to avoid the problems of low temperature of cement clinker on the upper side of the grate bed 15 far away from the feeding port and poor decomposition effect on toxic and harmful gases.
The pressure of the gas outlet of the air chamber cooling fan 8 is adjusted according to the pressure of the first inflatable beam fan 6 and the second inflatable beam fan 7, so that the toxic and harmful gas is prevented from flowing back into the air chamber 11, the gas in the air chamber 11 is prevented from flowing into the inflatable beam, and the leakage of the toxic and harmful gas can be prevented.
The feed inlet of the grate cooler 10 is communicated with the discharge outlet of the rotary kiln 13 or the decomposing furnace, so that the gas of the grate cooler 10 enters the rotary kiln 13 or the decomposing furnace for retreatment and then is discharged to the atmosphere, the toxic and harmful gas is thoroughly treated, and the pollution to the environment is avoided.
As shown in fig. 4: the mechanical air mixing valve comprises a valve body 31, a valve plate 34 and a damping device, wherein an input port and an output port are formed in the valve body 31, the valve plate 34 is arranged between the input port and the output port, a sealing part matched with the valve plate 34 is arranged in the valve body 31, and the damping device is connected with the valve plate 34. This valve plate 34 of mechanical air mixing valve is mutually supported with the sealing of valve body 31, with input port and delivery outlet disconnection, the mechanical air mixing valve is vertical when using, rely on the tight sealing of gravity compacting of valve plate 34, thereby realize sealedly, and rely on the pressure differential of valve plate 34 upper and lower both sides to realize opening between valve plate 34 and the sealing, thereby realized maintaining the pressure on valve body 31 upper portion in normal range, damping device can produce the damping to the motion of valve plate 34, avoid valve plate 34 velocity of motion too fast and the problem of vibration and impact appears, guaranteed to seal reliably between valve plate 34 and the sealing, and then guaranteed mechanical air mixing valve reliable operation.
The valve body 31 is a vertically arranged cylinder, the upper end and the lower end of the valve body 31 are both arranged in an open mode, the upper end of the valve body 31 is an output port, and one side of the lower portion of the valve body 31 is an input port. The valve body 31 is in a step shape with the inner diameter of the upper end larger than that of the lower end, a micro-pressure cavity 3101 is formed at the upper part of the inner cavity of the valve body 31, a normal-pressure cavity 3102 is formed at the lower part of the inner cavity of the valve body 31, and the shoulder part of the valve body 31 is a sealing part.
The valve plate 34 is disc-shaped, the valve plate 34 and the valve body 31 are coaxially arranged, and the diameter of the valve plate 34 is smaller than the inner diameter of the micro pressure cavity 3101 of the valve body 31 and larger than the inner diameter of the normal pressure cavity 3102, so that the valve plate can be matched with a sealing part to realize sealing. The middle part of the valve plate 34 is convex, so that the deformation resistance of the valve plate 34 is improved, and the sealing reliability between the valve plate 34 and the sealing part is ensured.
This machinery blast valve that mixes still includes valve rod 23, and valve rod 23 and the coaxial setting of valve body 31, damping device set up the downside at valve body 31, and the upper end of valve rod 23 is passed through the nut and is connected with 34 detachable of valve plate, and the lower extreme of valve rod 23 links to each other with damping device.
The upper side of the sealing part of the valve body 31 is provided with a sealing gasket 25, and the sealing gasket 25 is made of polyurethane, so that the sealing reliability between the valve plate 34 and the sealing part is ensured.
The lower end of the valve body 31 is detachably provided with a damping end cover 27, and the damping end cover 27 is detachably connected with the lower end of the valve body 31. The middle part of the valve body 31 is provided with a baffle plate which is arranged on the upper part of the normal pressure cavity 3102, the baffle plate is provided with a plurality of communicating ports which are uniformly distributed at intervals around the axis of the valve body 31, so that the normal pressure cavity 3102 is communicated with the micro pressure cavity 3101.
The middle part coaxial arrangement of baffle has last sliding sleeve 24, and coaxial arrangement has lower sliding sleeve 26 on the damping end cover 27, goes up the material of sliding sleeve 24 and lower sliding sleeve 26 and is the wear resistant plastics of stereoplasm, goes up sliding sleeve 24 and lower sliding sleeve 26 and all slides the cover and establish outside valve rod 23 to realized the direction to valve rod 23, guaranteed that valve rod 23 only can take place the removal of axis direction, guaranteed to seal reliably between valve plate 34 and the sealing.
The damping device comprises a damping cup 30 and a damping piston 29, the damping cup 30 is cylindrical, the lower end of the damping cup is closed, the upper end of the damping cup 30 is detachably connected with a damping end cover 27, and an O-shaped sealing ring 28 is arranged between the damping cup 30 and the damping end cover 27. An O-ring seal 28 is also provided between the damping end cap 27 and the valve stem 23, the O-ring seal 28 being provided on the underside of the lower sliding sleeve 26 to ensure that the upper opening of the damping cup 30 is closed. The damping piston 29 is coaxially arranged in the damping cup 30, the damping piston 29 is in sliding connection with the damping cup 30, and the lower end of the valve rod 23 is connected with the damping piston 29 and drives the valve rod to synchronously lift. In this embodiment, the diameter of the damping piston 29 is smaller than the inner diameter of the damping cup 30, so that a communication channel is formed between the inner wall of the damping cup 30 and the damping piston 29, and the inner cavities of the damping cup 30 on both sides of the damping piston 29 are communicated.
When the mechanical air mixing valve is used, the upper air of the valve plate 34 is under slight negative pressure, and the lower air is under atmospheric pressure. When the upper pressure of the valve plate 34 is in a normal range, the difference between the sum of the gravity of the valve plate 34 and the valve rod 23 and the sum of the pressure generated by the elastic force of the spring 32 and the pressure difference between the upper side and the lower side of the valve plate 34, namely the balance force, is greater than 0, the valve plate 34 presses the sealing part, namely the sealing part is sealed between the valve plate 34 and the sealing part, and the mechanical air mixing valve is in a closed state.
When the micro negative pressure of the gas on the upper portion of the valve plate 34 is lowered, the pressure difference between the upper side and the lower side of the valve plate 34 is increased, the upward acting force on the valve plate 34 is increased, when the balance force is smaller than 0, the valve plate 34 and the valve rod 23 move upward, the gap between the valve plate 34 and the sealing part is opened, the air on the lower portion of the valve plate 34 enters the upper portion of the valve plate 34 through the gap between the valve plate 34 and the sealing part, the pressure of the gas on the upper portion of the valve plate 34 is increased, the pressure difference between the upper side and the lower side of the valve plate 34 is reduced, meanwhile, the compression displacement of the spring 32 is reduced, the elastic force is. At this time, the pressure of the gas above the valve plate 34 is continuously increased, the valve plate 34 and the valve rod 23 are slowly moved downward, and the mechanical air mixing valve is closed after the valve plate 34 is brought into contact with the sealing portion.
In the process that the valve plate 34 and the valve rod 23 ascend, the damping piston 29 also ascends synchronously, the damping oil in the upper cavity and the lower cavity of the damping cup 30 generates pressure difference, the damping oil in the upper cavity flows to the lower cavity through a communication channel between the damping piston 29 and the damping cup 30, the valve plate 34 and the valve rod 23 are ensured to move stably and slowly, and vibration and impact are avoided.
The working process of the device for treating the toxic and harmful gases by using the cooling machine is as follows: when the rotary kiln 13 does not work, the input valve 1 is closed, the exhaust valve is opened, and at the moment, the poisonous and harmful gas input by the input pipe 9 is processed by the gas processing device 2, is sent into the chimney 12 by the exhaust fan 14, and is directly discharged into the air through the chimney 12.
When the rotary kiln 13 works, the air inlet fan 3 sends toxic and harmful gas into the buffer box 17, the first inflatable beam fan 6 and the second inflatable beam fan 7 send the toxic and harmful gas into the inflatable longitudinal beam 20, the toxic and harmful gas is sent to the upper side of the grate bed 15 through the grate plate 16 to be in contact decomposition with cement clinker, meanwhile, the air chamber cooling fan 8 sends air to the upper side of the grate bed 15 through the air chamber 11, the influence on the cooling of the cement clinker is avoided, the leakage of the toxic and harmful gas is avoided, the toxic and harmful gas and the cement clinker are in contact decomposition, then enter the rotary kiln 13 and are discharged into the atmosphere after being treated by the rotary kiln 13, the toxic and harmful gas is thoroughly treated, and the pollution to the environment is avoided.
The buffer tank 17 maintains negative pressure, and the mechanical air mixing valve 4 and the electric air mixing valve 5 can prevent the air pressure in the buffer tank 17 from being too low. The air inlet fan 3 is a variable frequency fan, and the stability of air pressure in the buffer box 17 is further ensured.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. A device for treating toxic and harmful gases by using a cooling machine is characterized in that: the air mixing device comprises an air supply fan, an air mixing valve and a grate cooler (10), wherein an air inlet of the air supply fan is communicated with an air outlet of an input pipe (9), an air outlet of the air supply fan is communicated with an air inlet of the grate cooler (10), and the air mixing valve is communicated with an air inlet of the air supply fan.
2. The apparatus for treating poisonous and harmful gas using a cooler according to claim 1, wherein: the air supply fan comprises an inflatable beam fan and an air chamber cooling fan (8), the air inlet of the inflatable beam fan is communicated with the input pipe (9), the air outlet of the inflatable beam fan is communicated with the inflatable beam of the grate cooler (10), the air outlet of the air chamber cooling fan (8) is communicated with the air chamber (11) of the grate cooler (10), and the air mixing valve is communicated with the air inlet of the inflatable beam cooling fan.
3. The apparatus for treating poisonous and harmful gas using a cooler according to claim 2, wherein: the grate cooler (10) comprises a cooler main body, and a grate plate (16) and an inflatable beam which are arranged in the cooler main body, wherein the grate plate (16) is provided with a plurality of blocks arranged on the upper side of the inflatable beam, the grate plates (16) are spliced into an inclined grate bed (15) which gradually decreases from a feeding hole to a discharging hole, an air chamber (11) is formed on the lower side of the grate bed (15), an air outlet of an air chamber cooling fan (8) is communicated with the air chamber (11), the lower part of the grate plate (16) is communicated with the inflatable beam, and the air outlet of the inflatable beam fan is communicated with the inflatable beam.
4. The apparatus for treating poisonous and harmful gas using a cooler according to claim 3, wherein: the top of the grid plate (16) is provided with a plurality of air outlets, and the grid plate (16) is provided with a communicating channel which communicates the air filling beam with the air outlets.
5. The apparatus for treating poisonous and harmful gas using a cooler according to claim 3, wherein: the cooler is characterized in that a partition plate (22) is arranged in the cooler body, a plurality of independent air chambers (11) are formed on the lower side of the grate bed (15), and each air chamber (11) is connected with an independent air chamber cooling fan (8).
6. The apparatus for treating poisonous and harmful gas using a cooler according to claim 1, wherein: the air supply system is characterized by further comprising an air inlet fan (3) and a buffer box (17), wherein an air inlet of the air inlet fan (3) is communicated with an air outlet of the input pipe (9), an air outlet of the air inlet fan (3) is communicated with an air inlet of the buffer box (17), an air inlet of the air supply fan is communicated with an air outlet of the buffer box (17), and the air mixing valve is communicated with an air inlet of the buffer box (17).
7. The apparatus for treating poisonous and harmful gas using a cooler according to claim 1 or 6, wherein: the air mixing valve comprises a mechanical air mixing valve (4) and an electric air mixing valve (5), and the mechanical air mixing valve (4) and the electric air mixing valve (5) are communicated with an air inlet of the buffer tank (17).
8. The apparatus for treating poisonous and harmful gas using a cooler according to claim 7, wherein: the mechanical air mixing valve (4) comprises a valve body (31), a valve plate (34) and a damping device, an input port and an output port are formed in the valve body (31), the valve plate (34) is arranged between the input port and the output port, a sealing portion matched with the valve plate (34) is arranged in the valve body (31), and the damping device is connected with the valve plate (34).
9. The apparatus for treating poisonous and harmful gas using a cooler according to claim 1, wherein: the air supply device is characterized by further comprising an exhaust device, the air outlet of the input pipe (9) is communicated with the air inlet of the air supply fan and the air inlet of the exhaust device, an input valve (1) is arranged between the air outlet of the input pipe (9) and the air inlet of the air supply fan, and an exhaust valve is arranged between the air outlet of the input pipe (9) and the exhaust device.
10. The apparatus for treating poisonous and harmful gas using a cooler according to claim 9, wherein: the exhaust device comprises a gas treatment device (2) and a chimney (12), wherein a gas inlet of the gas treatment device (2) is communicated with a gas outlet of the input pipe (9), and a gas outlet of the gas treatment device (2) is communicated with the chimney (12).
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| CN202010560223.9A CN111592249A (en) | 2020-06-18 | 2020-06-18 | Device for treating toxic and harmful gas by using cooling machine |
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| CN202010560223.9A CN111592249A (en) | 2020-06-18 | 2020-06-18 | Device for treating toxic and harmful gas by using cooling machine |
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