CN106362567A - Waste pyrolysis tail gas treatment apparatus - Google Patents
Waste pyrolysis tail gas treatment apparatus Download PDFInfo
- Publication number
- CN106362567A CN106362567A CN201510729478.2A CN201510729478A CN106362567A CN 106362567 A CN106362567 A CN 106362567A CN 201510729478 A CN201510729478 A CN 201510729478A CN 106362567 A CN106362567 A CN 106362567A
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- CN
- China
- Prior art keywords
- alkali
- deacidification
- alkali mist
- tube
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 20
- 239000002699 waste material Substances 0.000 title abstract description 3
- 239000003513 alkali Substances 0.000 claims abstract description 98
- 239000003595 mist Substances 0.000 claims abstract description 45
- 239000007789 gas Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002912 waste gas Substances 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000007592 spray painting technique Methods 0.000 claims description 13
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 8
- 238000010791 quenching Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract 4
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract 1
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- -1 industrial refuse Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention discloses a waste pyrolysis tail gas treatment apparatus. The apparatus comprises a shell-and-tube heat exchanger, a deacidification quench tower, an alkali liquid storage tank and a tree-shaped alkali mist ejector; the shell-and-tube heat exchanger is a hollow cylinder, the cylinder is provided with a high temperature waste gas inlet and a low temperature waste gas outlet, the inner wall of the cylinder is fixedly provided with water cooling tubes, one of the water cooling tubes is connected with a water inlet tube, and the other one of the water cooling tubes is connected with a steam outlet tube; the low temperature waste gas outlet is connected to the bottom of the deacidification quench tower; the tree-shaped alkali mist ejector stretches into the inner side of the deacidification quench tower from the top of the deacidification quench tower; the tree-shaped alkali mist ejector comprises an alkali mist conveying end and alkali mist output tubes stretching in the radial direction of the alkali mist conveying end; every alkali mist output tube is provided with nanometer grade nozzles; the quantity of the alkali mist output tubes is more than 1, and the alkali mist output tubes are uniformly distributed along the axial direction of the alkali mist conveying end; and an alkali liquid is contained in the alkali liquid storage tank, and the alkali liquid storage tank and the steam output tube are commonly connected to the alkali mist conveying end. The apparatus effectively realizes tail gas deacidification, heavy metal immobilization and dioxin generation inhibition.
Description
Technical field
The present invention relates to technical field of waste treatment, relate in particular to a kind of refuse pyrolysis exhaust gas processing device.
Background technology
By the way of pyrolytic gasification, rubbish is thermally decomposed, be the main method processing the various industries rubbish such as domestic waste, industrial refuse, medical waste, petrochemical industry greasy filth in modern society.There is so some problems in prior art needs to be resolved: the gas temperature producing after refuse pyrolysis is high, reach 1150 degree to 850 degree, and containing substantial amounts of heavy metal substance, sulphur-containing substance and acidic materials, so must carry out cooling down, desulfurization, just can be discharged and follow-up flow process after deacidification and heavy metals immobilization separating treatment.It is known that tail gas produced by refuse pyrolysis is easy to produce the carcinogenic extremely toxic substance such as two English when being in the temperature range between 600 degree to 200 degree and existing cooling treatment mode cannot ensure that more than 850 degree of high-temperature gas was quenched to less than 200 degree of national technological standardss after keeping more than 2 seconds in 1 second.How to overcome the problem that the problems referred to above are that those skilled in the art need thinking.
Content of the invention
For solving the above problems, the invention provides a kind of refuse pyrolysis exhaust gas processing device.
The concrete technical scheme of the present invention is as follows:
A kind of refuse pyrolysis exhaust gas processing device, including shell-and-tube exchanger, deacidification flash cold column, alkali liquor storage tank and tree-like alkali spray painting emitter；Described shell-and-tube exchanger is hollow cylinder, and this cylinder is provided with high-temp waste gas entrance and low temperature waste gas outlet, its inwall are fixed with water cooling tube, and described water cooling tube one end connects water inlet pipe, the other end connects steam outlet pipe；Described low temperature waste gas outlet connects to deacidification quenching top of tower；Described deacidification quenching tower bottom is provided with slaine hopper and gas outlet；Described tree-like alkali spray painting emitter is stretched into inside deacidification flash cold column by deacidification quenching top of tower；Described tree-like alkali spray painting emitter includes alkali mist delivery end and multiple alkali mist outlet tube stretching out in alkali mist delivery end radial direction；Described alkali mist outlet tube is provided with nanoscale nozzle；Described alkali mist outlet tube is uniformly distributed along alkali mist delivery end axial direction；Dress alkali liquor is taken advantage of, described alkali liquor storage tank and steam outlet pipe are commonly connected to alkali mist delivery end in described alkali liquor storage tank.
By using this technical scheme: the sub- first high temperature of tail gas of up to 1150 degree -800 degree of the temperature that refuse pyrolysis produce is discarded entrance and entered in shell-and-tube exchanger, in the presence of the water cooling tube on shell-and-tube exchanger inwall, is progressively cooled to 600 degree.Meanwhile, the cooling water in water cooling tube is made to derive by thermosetting water vapour and from steam outlet pipe.Then, it is cooled to 600 degree of tail gas from low temperature waste gas outlet connection to deacidification flash cold column；Simultaneously, the alkali liquor of dress is taken advantage of jointly to enter in alkali mist delivery end in steam in steam outlet pipe and alkali liquor storage tank, sprayed in the form of nanoscale alkali mist from the nanoscale nozzle alkali mist outlet tube, so that contacting in the case of maximizing contact probability with sodium rice alkali mist and moment reaction in acid tail gas, it is cooled to less than 200 degree in one second, and it is simultaneously achieved the physical change of moment heat exchange and the chemical reaction of acid-base neutralization, heavy metals immobilization, reach the purpose that removing tail gas middle acid substance, heavy metals immobilization and suppression two English generate.Heavy metallic salt produced by heavy metals immobilization reaction is collected by slaine hopper and is derived, and tail gas after treatment is derived by gas outlet.
Preferably, in above-mentioned refuse pyrolysis exhaust gas processing device: also include venturi steam jet pump, described alkali liquor storage tank is connected to alkali mist delivery end through venturi steam jet pump jointly with steam outlet pipe.
By using this technical scheme: using venturi effect produced by venturi steam jet pump, vapor in alkali liquor and steam outlet pipe in alkali liquor storage tank is obtained when entering tree-like alkali spray painting emitter after venturi steam jet pump be sufficiently mixed and pressure effect, optimize tree-like alkali spray painting emitter and spray alkali fog effect.
It is further preferred that in above-mentioned refuse pyrolysis exhaust gas processing device: also include alkali liquor dosing pump, described alkali liquor storage tank connects to venturi steam jet pump through alkali liquor dosing pump.
By using this technical scheme: realize the quantified controlling to the alkali liquor inputting in tree-like alkali spray painting emitter using alkali liquor dosing pump, ensure that the alkali liquor degree included in alkali mist is reasonable, optimize the efficiency of acid-base neutralization, prevent alkali liquor from wasting.
It may further be preferable that in above-mentioned refuse pyrolysis exhaust gas processing device: also include air-introduced machine；Described air-introduced machine one end connects low temperature waste gas outlet, the other end connects deacidification quenching top of tower.
By using this technical scheme: the 600 degree of tail gas derived by low temperature waste gas outlet enter in deacidification flash cold column under air-introduced machine effect.
It is even furthermore preferable that in above-mentioned refuse pyrolysis exhaust gas processing device: also include pneumatic conveyer, described pneumatic conveyer connects described gas outlet.
By using this technical scheme: form the guiding wind of negative pressure in gas outlet using pneumatic conveyer, accelerating treated tail gas in deacidification flash cold column derives from gas outlet.
Compared with prior art, present configuration, simply it is easy to preparation, effectively realizes the technique effect removing tail gas middle acid substance, heavy metals immobilization and suppressing two English to generate.
Brief description
Fig. 1 is the structural representation of the embodiment of the present invention 1；
In above-mentioned accompanying drawing, each part is as follows with the corresponding relation of reference:
1st, shell-and-tube exchanger；2nd, deacidification flash cold column；3rd, alkali liquor storage tank；4th, tree-like alkali spray painting emitter；5th, venturi steam jet pump；6th, alkali liquor dosing pump；7th, air-introduced machine；8th, pneumatic conveyer；11st, high-temp waste gas entrance；12nd, low temperature waste gas outlet；13rd, water cooling tube；14th, water inlet pipe；15th, steam outlet pipe；21st, slaine hopper；22nd, gas outlet；41st, alkali mist delivery end；42nd, alkali mist outlet tube.
Specific embodiment
In order to be illustrated more clearly that technical scheme, below in conjunction with accompanying drawing, the invention will be further described.
The embodiment of the present invention 1 as shown in Figure 1:
A kind of refuse pyrolysis exhaust gas processing device, including shell-and-tube exchanger 1, deacidification flash cold column 2, alkali liquor storage tank 3, tree-like alkali spray painting emitter 4, venturi steam jet pump 5, alkali liquor dosing pump 6, air-introduced machine 7 and pneumatic conveyer 8.
Wherein, described shell-and-tube exchanger 1 is hollow cylinder, and this cylinder is provided with high-temp waste gas entrance 11 and low temperature waste gas outlet 12, its inwall are fixed with water cooling tube 13, and described water cooling tube 13 one end connects water inlet pipe 14, the other end connects steam outlet pipe 15；；Described air-introduced machine 7 one end connects low temperature waste gas outlet 12, the other end connects deacidification flash cold column 2 top.Described deacidification flash cold column 2 bottom is provided with slaine hopper 21 and gas outlet 22；Described pneumatic conveyer 8 connects described gas outlet 22.Described tree-like alkali spray painting emitter 4 is stretched into inside deacidification flash cold column 2 by deacidification flash cold column 2 top；Described tree-like alkali spray painting emitter 4 includes alkali mist delivery end 41 and multiple alkali mist outlet tube 42 stretching out in alkali mist delivery end 41 radial direction；Described alkali mist outlet tube 42 is provided with nanoscale nozzle；Described each alkali mist outlet tube 42 is uniformly distributed along alkali mist delivery end 41 axial direction；Dress alkali liquor is taken advantage of, described alkali liquor storage tank 3 connects to venturi steam jet pump 5 through alkali liquor dosing pump 6 in described alkali liquor storage tank 3.Described alkali liquor storage tank 3 is connected to alkali mist delivery end 41 through described venturi steam jet pump 5 jointly with steam outlet pipe 15.
In practice, work process is as follows: the sub- first high temperature of tail gas of up to 1150 degree -800 degree of the temperature that refuse pyrolysis produce is discarded entrance 11 and entered in shell-and-tube exchanger 1, do heat exchange with the water cooling tube 13 on shell-and-tube exchanger 1 inwall, be progressively cooled to 600 degree.Meanwhile, the cooling water in water cooling tube 13 is subject to thermosetting water vapour and derives from steam outlet pipe 15.Then, the tail gas being cooled to 600 degree exports 12 bottoms uniformly entering deacidification flash cold column 2 through air-introduced machine 78 from low temperature waste gas；Simultaneously, steam in steam outlet pipe 15 mixes common entrance alkali mist delivery end 41 after pressurization with the alkali liquor taking advantage of dress in alkali liquor storage tank 3 through venturi steam jet pump 5, and sprayed in the form of nanoscale alkali mist from the nanoscale nozzle alkali mist outlet tube 42, so that contact in the case of maximizing contact probability with sodium rice alkali mist and moment reaction in 600 degree of acid tail gas.Realize being cooled to 200 degree of technique effect, the maximized generation having contained two English in one second.Heavy metallic salt produced by heavy metals immobilization reaction collects derivation by slaine hopper 21, and meanwhile, pneumatic conveyer 8 forms the guiding wind of negative pressure in gas outlet 22, and accelerating treated tail gas in deacidification flash cold column 2 derives from gas outlet 22.
The above; it is only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those skilled in the art is in technical scope disclosed by the invention; the change or replacement that can readily occur in, all should be included within the scope of the present invention.Protection scope of the present invention is defined by the protection domain of claims.
Claims (5)
1. a kind of refuse pyrolysis exhaust gas processing device it is characterised in that: include shell-and-tube exchanger (1), deacidification flash cold column (2), alkali liquor storage tank (3) and tree-like alkali spray painting emitter (4)；Described shell-and-tube exchanger (1) is hollow cylinder, this cylinder is provided with high-temp waste gas entrance (11) and low temperature waste gas outlet (12), its inwall are fixed with water cooling tube (13), and described water cooling tube (13) one end connects water inlet pipe (14), the other end connects steam outlet pipe (15)；Described low temperature waste gas outlet (12) connect to deacidification flash cold column (2) top；Described deacidification flash cold column (2) bottom is provided with slaine hopper (21) and gas outlet (22)；Described tree-like alkali spray painting emitter (4) is stretched into inside deacidification flash cold column (2) by deacidification flash cold column (2) top；Described tree-like alkali spray painting emitter (4) includes alkali mist delivery end (41) and multiple alkali mist outlet tube (42) stretching out in alkali mist delivery end (41) radial direction；Described alkali mist outlet tube (42) is provided with nanoscale nozzle；Described each alkali mist outlet tube (42) is uniformly distributed along alkali mist delivery end (41) axial direction；Dress alkali liquor is taken advantage of, described alkali liquor storage tank (3) and steam outlet pipe (15) are commonly connected to alkali mist delivery end (41) in described alkali liquor storage tank (3).
2. a kind of refuse pyrolysis exhaust gas processing device as claimed in claim 1, it is characterized in that: also include venturi steam jet pump (5), described alkali liquor storage tank (3) is connected to alkali mist delivery end (41) through described venturi steam jet pump (5) jointly with steam outlet pipe (15).
3. as claimed in claim 2 a kind of refuse pyrolysis exhaust gas processing device it is characterised in that: also include alkali liquor dosing pump (6), described alkali liquor storage tank (3) connects to venturi steam jet pump (5) through alkali liquor dosing pump (6).
4. as claimed in claim 3 a kind of refuse pyrolysis exhaust gas processing device it is characterised in that: also include air-introduced machine (7)；Described air-introduced machine (7) one end connects low temperature waste gas outlet (12), the other end connects deacidification flash cold column (2) top.
5. as claimed in claim 4 a kind of refuse pyrolysis exhaust gas processing device it is characterised in that: also include pneumatic conveyer (8), described pneumatic conveyer (8) connects described gas outlet (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510729478.2A CN106362567A (en) | 2015-11-02 | 2015-11-02 | Waste pyrolysis tail gas treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510729478.2A CN106362567A (en) | 2015-11-02 | 2015-11-02 | Waste pyrolysis tail gas treatment apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106362567A true CN106362567A (en) | 2017-02-01 |
Family
ID=57880998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510729478.2A Pending CN106362567A (en) | 2015-11-02 | 2015-11-02 | Waste pyrolysis tail gas treatment apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106362567A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1178130A (en) * | 1996-08-02 | 1998-04-08 | S·I·El·有限公司 | Automatic water-steam mixer |
| CN102284467A (en) * | 2011-05-17 | 2011-12-21 | 北京能源投资（集团）有限公司 | Plasma garbage disposal system and method |
| CN205586760U (en) * | 2015-11-02 | 2016-09-21 | 上海寅意环保科技有限公司 | Garbage pyrolytic tail gas processing apparatus |
-
2015
- 2015-11-02 CN CN201510729478.2A patent/CN106362567A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1178130A (en) * | 1996-08-02 | 1998-04-08 | S·I·El·有限公司 | Automatic water-steam mixer |
| CN102284467A (en) * | 2011-05-17 | 2011-12-21 | 北京能源投资（集团）有限公司 | Plasma garbage disposal system and method |
| CN205586760U (en) * | 2015-11-02 | 2016-09-21 | 上海寅意环保科技有限公司 | Garbage pyrolytic tail gas processing apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 兰州石油机械研究所: "《现代塔器技术》", 烃加工出版社 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170201 |