CN86101663A - Catalytic purifying sestem for industrial exhaust gas - Google Patents
Catalytic purifying sestem for industrial exhaust gas Download PDFInfo
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- CN86101663A CN86101663A CN 86101663 CN86101663A CN86101663A CN 86101663 A CN86101663 A CN 86101663A CN 86101663 CN86101663 CN 86101663 CN 86101663 A CN86101663 A CN 86101663A CN 86101663 A CN86101663 A CN 86101663A
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- catalytic
- heating
- sestem
- exhaust gas
- industrial exhaust
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 230000001172 regenerating effect Effects 0.000 claims abstract description 12
- 239000003054 catalyst Substances 0.000 claims description 10
- 238000006555 catalytic reaction Methods 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 235000019504 cigarettes Nutrition 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 2
- 238000004140 cleaning Methods 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 12
- 238000000746 purification Methods 0.000 description 12
- 239000003610 charcoal Substances 0.000 description 8
- 239000002912 waste gas Substances 0.000 description 8
- 238000004134 energy conservation Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 108091027981 Response element Proteins 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241000519996 Teucrium chamaedrys Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Catalytic purifying sestem for industrial exhaust gas is used to administer industrial harmful exhaust.
The self-heating catalytic reactor and the regenerative filter of heating element with catalytic performance are housed in it has adopted, have saved heat economizer.The regenerative filter flammable pollutant of burn off of can switching on also can be pulled out cleaning.It is compared with same device, has series of advantages such as volume is little, energy consumption is low, steel consumes less, filter is renewable, use is easy to maintenance.
Description
Catalytic purifying sestem for industrial exhaust gas is used to administer industrial harmful exhaust.
General industrial exhaust arrangement for catalytic purification mainly is made up of filter, preheater, catalytic reactor and heat exchanger, and other also will dispose annexes such as blower fan, air inlet pipe and blast pipe.When device started, waste gas will pass through preheating earlier, reaches " initiation temperature " of catalytic reaction, just can enter catalytic reactor and carry out catalytic reaction, and purified gas is discharged through over-heat-exchanger again.The mode of preheating also is diversified, is to adopt the coal gas heating as the CU-150 type arrangement for catalytic purification of Japan, build a gas preheating chamber in addition, has correspondingly increased equipment investment.Homemade arrangement for catalytic purification generally adopts the heating of electricity or far infrared radiation, though equipment investment is littler than Japanese CU-150 type, needs to consume the more energy equally and is used for heating by the exhaust gases.Especially when the intake air temperature of waste gas lower, or combustible concentration is when low, energy resource consumption is just more remarkable.In addition, be guard catalyst, some waste gas needs process filter preliminary treatment earlier, enters arrangement for catalytic purification again.Wherein the filter that is adopted generally is that stainless steel strip (or bits) is contained in the casing and makes.Long-pending for a long time when filter internal contamination thing, need to stop production the whole box body extraction is cleaned or changed with buck.
In order to overcome above-mentioned shortcoming, the present invention has adopted self-heating catalytic reactor and regenerative filter.This catalytic reactor is that a kind of top is circular arc camber, and the cylindrical tube of centre bore is arranged at the bottom.The tube internal upper part is equipped with heating element with catalytic performance (applied for Chinese patent, application number is 85107170), and the bottom is an alloy honeycomb catalyst in the tube.Therefore, low temperature waste gas needn't can directly enter the self-heating catalytic reactor through preheating, waste gas runs into the heating element with catalytic performance of uniform temperature on the top of tube, and the generation catalytic oxidation, arrived the bottom, because gas temperature has surpassed firing point, just needn't heat and can carry out catalytic reaction, thereby save the energy in a large number.The quantity and the relative position of this self-heating catalytic reactor and heating element with catalytic performance, all flexible design as required.
Another feature of the present invention is: having adopted the heating regenerative filter of making charcoal of switching on, it is by heating element heater and block the cigarette piece and form.Heating element heater is formed around volume together by siderochrome aluminium wavestrip and insulation flat rubber belting, and blocking the cigarette piece is to be made by porous high-temperature alloy oblique ripple thin slice.Long-pending for a long time when surface contaminant, can extract out and clean or change, flammable pollutant is burnt in the heating of also can switching on.
Description of drawings:
Fig. 1: the energy-conservation arrangement for catalytic purification flow chart of HFZR type
1, Pitot tube; 2, electric butterfly valve; 3, regenerative filter;
4, safe blower fan; 5, main air blower; 6, check valve;
7, heat exchanger; 8, self-heating catalytic reactor; 9, thermocouple.
Fig. 2: regenerative filter schematic diagram
10, heating element heater; 11, binding post; 12, heat-insulation layer;
13, block the cigarette piece; 14, the blast pipe of making charcoal; 15, the air inlet pipe of making charcoal.
Fig. 3: the energy-conservation arrangement for catalytic purification agent structure of HFZR-5000 type schematic diagram
16, air inlet pipe; 17, gas distribution chamber; 18, rupture pressure disc;
19, kuppe; 20, heating element with catalytic performance;
21, alloy honeycomb catalyst; 22, blast pipe.
12, heat-insulation layer; 7, heat exchanger;
Fig. 4: the energy-conservation arrangement for catalytic purification agent structure of HFZR-300 type schematic diagram
22, blast pipe; 16, air inlet pipe; 7, heat exchanger;
12, heat-insulation layer; 21, alloy honeycomb catalyst;
20, heating element with catalytic performance.
Embodiment:
HFZR(alloy cellular self-heating) the energy-conservation arrangement for catalytic purification of type, its flow process as shown in Figure 1.Industrial exhaust gas is through Pitot tube 1, and electric butterfly valve 2 enters regenerative filter 3, then by main air blower 5 with the direct warp let-off heat exchanger 7 of harmful exhaust, arrive self-heating catalytic reactor 8 again, the waste gas after the purification is emitted emptying behind the waste heat.Be equipped with thermocouple 9 before and after heat exchanger and the catalytic reactor, in order to the measurement gas temperature.Safe blower fan 4 suction air, the purging when being used for device and starting and the cooling when shutting down.When the flammable nuisance concentration in the industrial exhaust gas surpassed the permission limit, safe blower fan can be opened (self-con-tained unit is arranged) automatically, the air blast dilution.Safe blower fan is switched by check valve, also can blow into regenerative filter 3 make charcoal (or remove degreasing thing).
The regenerative filter is as shown in Figure 2: spirit is through heating element heater 10 and block cigarette piece 13 and remove main air blower.For preventing that pernicious gas from leaking, filter is worked under negative pressure, so filter can open, so that heating element heater and the mounting or dismounting and the cleaning of blocking the cigarette piece.When charcoal and greasy dirt thing run up to a certain degree, can feed fresh airs from the air inlet pipe 15 of making charcoal, make charcoal (or greasy dirt) at the element surface of the heating of switching on, then from blast pipe 14 emptyings of making charcoal.
The energy-conservation arrangement for catalytic purification agent structure of HFZR-5000 type is as shown in Figure 3: it has two self-heating catalytic reactors, the circumferential direction inside direction is equipped with six catalytic reaction member tubes, in the tube heating element with catalytic performance and catalyst are housed, have a gap to be beneficial to air-flow each other and fully mix.Adopt the method for welding that the response element tube is fixed on the reactor base plate.The heat exchanger that device uses is a corrugated plate dst.The import of heat exchanger taps into feed channel, and outlet communicates with the center of reactor bottom.
During operation, start safe blower fan, be blown into fresh air, purge and make heating element with catalytic performance energising preheating, treat that heating element with catalytic performance reaches catalytic reaction when temperature required, the closed safe blower fan, start main air blower, harmful exhaust is after the preliminary preheating of over-heat-exchanger, and just the outlet by heat exchanger enters the self-heating catalytic reactor by pipeline, between the catalytic reaction member tube, upwards flow, obtain preheating for the second time.Then, at top circular arc camber place, air-flow is assigned with, and from top to bottom enters heat exchanger by six response element tubes, provide waste heat after, from blast pipe emptying or carry out UTILIZATION OF VESIDUAL HEAT IN.Waste gas is by behind the heating element with catalytic performance, because waste gas has surpassed initiation temperature, thereby it is during by catalyst layer, needn't be more in addition heating just can play catalytic reaction.When the flammable nuisance in the industrial exhaust gas surpassed setting, safe blower fan was opened, and is blown into fresh air and makes its dilution.In addition, rupture pressure disc is equipped with at this device top, to guarantee handling safety.
HFZR-50; Midget plant structures such as HFZR-300 its heat exchanger as shown in Figure 4 are spiral plate types, and air inlet enters from a side, rotates to central tube, flows downward, and enters the heating element with catalytic performance central tube.At the circular arc camber place, air-flow is assigned with and changes into upwards and flows, and when being heated to heating element with catalytic performance 20 to a certain degree when flowing through, the catalytic purification reaction takes place, again through two layers of catalyst 21, in the hope of fully carrying out the catalytic purification reaction.The heat exchanger of flowing through at last provides heat, and from the top emptying.
This device sees Table one with the technical and economic performance data of other same device contrasts.
Table one vides infra.
In the table: UJIB-50, UJIB200, C-1 type are domestic device,
Adopt pellet type catalyst;
The CU-150 type is Japanese device, uses ceramic honeycomb catalyst.
List of references:
1. see examination department of Patent Office of the People's Republic of China search report, effectively the certificate of entrustment numbering 850034
Claims (5)
1, catalytic purifying sestem for industrial exhaust gas, mainly form by filter, preheater, catalytic reactor and heat exchanger, other also have annexes such as blower fan, air inlet pipe and escape pipe, and the invention is characterized in: it has adopted self-heating catalytic reactor and regenerative filter.
2, according to the catalytic purifying sestem for industrial exhaust gas of claim 1, said self-heating catalytic reactor is characterized in that: it is that a kind of top is the cylindrical tube that circular arc camber, bottom have centre bore, and the catalytic reaction member tube is being placed in its inside.
3, according to claim 1,2 self-heating catalytic reactor, said catalytic reaction member tube is characterized in that: its top is heating element with catalytic performance, and its underpart is an alloy honeycomb catalyst.
4, according to the catalytic purifying sestem for industrial exhaust gas of claim 1, wherein said regenerative filter is characterized in that: it mainly is made up of the cigarette piece that blocks of heating and filtering element and placement in parallel.
5, according to claim 1,4 catalytic purifying sestem for industrial exhaust gas, wherein said regenerative filter, it is characterized in that: its heating and filtering element is formed around volume together by siderochrome aluminium wavestrip and insulation flat rubber belting, blocks the cigarette piece and is made by porous high-temperature alloy oblique ripple thin slice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86101663A CN86101663B (en) | 1986-03-15 | 1986-03-15 | Catalytic purifying sestem for industrial exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86101663A CN86101663B (en) | 1986-03-15 | 1986-03-15 | Catalytic purifying sestem for industrial exhaust gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86101663A true CN86101663A (en) | 1987-09-23 |
| CN86101663B CN86101663B (en) | 1988-03-23 |
Family
ID=4801478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86101663A Expired CN86101663B (en) | 1986-03-15 | 1986-03-15 | Catalytic purifying sestem for industrial exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86101663B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553435A (en) * | 2010-12-08 | 2012-07-11 | 亚泰半导体设备股份有限公司 | Exhaust-gas treatment system and exhaust-gas treatment method |
-
1986
- 1986-03-15 CN CN86101663A patent/CN86101663B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553435A (en) * | 2010-12-08 | 2012-07-11 | 亚泰半导体设备股份有限公司 | Exhaust-gas treatment system and exhaust-gas treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN86101663B (en) | 1988-03-23 |
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