CN211176841U - Tail gas direct-fired furnace with multiple air inlets - Google Patents
Tail gas direct-fired furnace with multiple air inlets Download PDFInfo
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- CN211176841U CN211176841U CN201921590404.5U CN201921590404U CN211176841U CN 211176841 U CN211176841 U CN 211176841U CN 201921590404 U CN201921590404 U CN 201921590404U CN 211176841 U CN211176841 U CN 211176841U
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- 239000007789 gas Substances 0.000 claims abstract description 120
- 239000007921 spray Substances 0.000 claims abstract description 28
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 239000002912 waste gas Substances 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 abstract description 5
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000010812 mixed waste Substances 0.000 description 2
- COCAUCFPFHUGAA-MGNBDDOMSA-N n-[3-[(1s,7s)-5-amino-4-thia-6-azabicyclo[5.1.0]oct-5-en-7-yl]-4-fluorophenyl]-5-chloropyridine-2-carboxamide Chemical compound C=1C=C(F)C([C@@]23N=C(SCC[C@@H]2C3)N)=CC=1NC(=O)C1=CC=C(Cl)C=N1 COCAUCFPFHUGAA-MGNBDDOMSA-N 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000011084 recovery Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- 230000002277 temperature effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to the field of waste gas treatment devices, and discloses a tail gas direct-fired furnace with multiple air inlets, which comprises a furnace body, wherein the front end of the furnace body is provided with a burner inlet, and the tail part of the side wall of the furnace body is provided with a waste gas treatment outlet; two sides of the side wall of the furnace body are respectively horizontally and oppositely provided with two mixed gas spray guns, and the gas inlet directions of the two mixed gas spray guns deviate from the central line of the furnace body on the cross section of the furnace body and are respectively higher and lower than the central line; the mixed gas spray gun is provided with a tail gas inlet and an air inlet; the top of the side wall of the furnace body is also provided with a front air interface and a rear air interface. The utility model discloses set up the tail gas that advances of difference in height in tail gas direct-fired furnace both sides, advance the air at the top. This setting up mode can form the vortex in the furnace body, makes air and tail gas intensive mixing, promotes combustion efficiency, the guarantee tail gas treatment effect. In addition the utility model discloses a precombustion at tail gas import and little burst air prevents that the instantaneous temperature of system from crossing low excessively.
Description
Technical Field
The utility model relates to a waste gas treatment device field especially relates to a tail gas direct-fired furnace of many air inlets.
Background
The tail gas direct combustion furnace (also known as direct combustion waste gas incinerator) utilizes the heat produced by combustion of auxiliary fuel to raise the temperature of combustible harmful gas to reaction temperature so as to make oxidation decomposition and discharge it after reaching the standard. It is suitable for treating high-concentration waste gas in spraying, petrochemical, medicine and other industries.
The process flow generally comprises the following steps: organic mixed waste gas directly sends into tail gas direct-fired furnace through the effect of draught fan, and organic mixed waste gas gets into furnace, under the flame high temperature effect of combustor, makes the mist decompose into carbon dioxide and water, because the burning is the exothermic process, so the gas temperature after the burning is than higher, and heat recovery system can be done to the rear end.
In the tail gas direct-fired furnace, the degree of oxidation reaction of the tail gas (affecting the final VOC removal rate) depends on the "three T + one E condition": reaction Temperature (Temperature), residence Time (Time), turbulent mixing (turbulience), excess air (Ex-process). These "three T conditions" are interrelated in that improvement of one condition can reduce the other two conditions to the extent that they are improved.
The existing tail gas direct-fired furnace in the prior art has the following general defects: high-concentration waste gas directly enters the direct-fired furnace to be combusted, and in the high-concentration waste gas treatment of the traditional tail gas direct-fired furnace, the problems of bias flow, dead angles and the like exist in the air inlet in the furnace body, so that the temperature fluctuation is large, and the conditions of excessive NOx content in the discharged waste gas and incomplete waste gas combustion are caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a tail gas direct-fired furnace of many air inlets. The utility model discloses set up the tail gas that advances of difference in height in tail gas direct-fired furnace both sides, advance the air at the top. This setting up mode can form the vortex in the furnace body, makes air and tail gas intensive mixing, promotes combustion efficiency, the guarantee tail gas treatment effect. In addition the utility model discloses a precombustion at tail gas import and little burst air prevents that the instantaneous temperature of system from crossing low excessively.
The utility model discloses a concrete technical scheme does: a tail gas direct-fired furnace with multiple air inlets comprises a furnace body, wherein a burner inlet is arranged at the front end of the furnace body, and a waste gas treatment rear outlet is arranged at the tail part of the side wall of the furnace body; two sides of the side wall of the furnace body are respectively horizontally and oppositely provided with two mixed gas spray guns, and the gas inlet directions of the two mixed gas spray guns deviate from the central line of the furnace body on the cross section of the furnace body and are respectively higher and lower than the central line; the mixed gas spray gun is provided with a tail gas inlet and an air inlet; the top of the side wall of the furnace body is also provided with a front air interface and a rear air interface; the front air interface and the rear air interface are respectively positioned in front of and behind the mixed gas spray gun.
The utility model discloses the concrete principle of device as follows: the natural gas is firstly combusted through the inlet of the combustor to be heated to the set tail gas treatment temperature. The tail gas enters from the left side and the right side of the furnace body in two paths. Wherein the tail gas inlets on both sides are respectively deviated from the central line of the incinerator. The air is divided into four strands, wherein the air enters the tail gas to be mixed and combusted with the tail gas mainly through the front and back two strands of the top part of the combustor, and a small air strand is respectively arranged at the tail gas inlets of the combustor and the tail gas inlet of the tail gas to be mixed with the high-temperature tail gas to be introduced into the furnace body in advance to carry out pre-combustion so as to ensure the. Can form the vortex in the furnace body under above-mentioned air inlet arrangement mode, make air and tail gas intensive mixing, promote combustion efficiency, guarantee tail gas treatment effect.
Preferably, the gas inlet directions of the two mixed gas spray guns deviate from the center line of the furnace body by 0.1-0.2 times of the diameter distance of the furnace body on the cross section of the furnace body.
Preferably, the gas inlet directions of the two mixed gas spray guns deviate from the center line of the furnace body by 0.15 times of the diameter distance of the furnace body on the cross section of the furnace body.
After a large number of tests, the team of the invention finds that the vortex formed under the deviation degree has better effect, wherein the distance of 0.15 times of the diameter of the furnace body is optimal.
Preferably, the mixed gas spray gun comprises a shell and a plurality of tail gas pipes, wherein the tail gas pipes are arranged in the shell, and tail gas inlets are formed in the tail gas pipes; an air inlet is formed in the side wall of the shell.
The tail gas passes through the tube pass, the air passes through the shell pass, and the tail gas and the air are not mixed in the mixed gas spray gun.
Preferably, the air intake direction of the front air interface and the rear air interface is a downward direction and is perpendicular to the air intake direction of the mixed gas injection gun.
Preferably, the air inflow of the front air interface and the air inflow of the rear air interface are larger than the air inflow of the air inlet of the mixed gas spray gun.
The air function of the forward air interface is for combustion and the air function of the aft air interface is for supplemental combustion and cooling.
Preferably, the mixed gas spray gun, the front air interface and the rear air interface are respectively provided with a flow regulating valve.
The air inflow can be adjusted according to different exhaust gas concentrations and flow fluctuation.
Preferably, the rear end of the furnace body is provided with an observation window.
Preferably, the side wall of the furnace body is provided with an access hole, a pressure gauge and a thermometer.
Preferably, a supporting seat is arranged on the side wall of the furnace body.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in the device, tail gas divides both sides to get into to skew central line makes the interior vortex that forms of stove separately in height, improves the torrent and mixes the effect. The phenomena of bias flow and dead angles possibly existing in the combustion furnace are solved, and the system combustion is enabled to more fully ensure the treatment effect.
2. The utility model discloses in the device, the air divides four strands to get into, and two strands of entering and tail gas mix around main air divides from the top. And a small air flow enters the furnace together at the waste gas inlet and then is mixed with tail gas for pre-combustion, so that the system can ensure the combustion temperature under the condition of excessive air.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic view of another perspective structure of the present invention;
FIG. 3 is a schematic structural view of a cross section of the furnace body in FIG. 1;
FIG. 4 is a schematic structural view of a longitudinal section of the furnace body in FIG. 1;
FIG. 5 is a schematic view of the mixed gas lance of the present invention;
FIG. 6 is a schematic structural view in longitudinal section of FIG. 5;
fig. 7 is a schematic structural view of the cross section of fig. 5.
The reference signs are: furnace body 1, combustor entry 2, export 3 behind the exhaust-gas treatment, mist spray gun 4, air inlet 5, preceding air interface 6, back air interface 7, casing 8, tail-gas duct 9, observation window 10, access hole 11, pressure gauge 12, thermometer 13, supporting seat 14.
Detailed Description
The present invention will be further described with reference to the following examples. The devices, connections, and methods referred to in this disclosure are those known in the art, unless otherwise indicated.
Example 1
As shown in fig. 1-4: the utility model provides a tail gas direct-fired furnace of many air inlets, includes furnace body 1, the front end of furnace body is equipped with combustor entry 2, and the afterbody of furnace body lateral wall is equipped with exhaust-gas treatment back export 3, and the furnace body rear end is equipped with observation window 10, is equipped with access hole 11, pressure gauge 12 and thermometer 13 on the furnace body lateral wall, and furnace body lateral wall bottom is equipped with supporting seat 14.
As shown in fig. 3-4, two sides of the side wall of the furnace body are respectively provided with two mixed gas spray guns 4 horizontally and oppositely, the gas inlet directions of the two mixed gas spray guns deviate from the center line of the furnace body on the cross section of the furnace body, and are respectively higher and lower than the center line by 0.15 times of the diameter distance of the furnace body. As shown in fig. 5-7, the mixed gas spray gun comprises a housing 8 and 6 parallel exhaust pipes 9, wherein the exhaust pipes are arranged in the housing and provided with exhaust inlets; an air inlet 5 is arranged on the side wall of the shell.
As shown in fig. 1-2, the top of the side wall of the furnace body is also provided with a front air interface 6 and a rear air interface 7; the front air interface and the rear air interface are respectively positioned in front of and behind the mixed gas spray gun, and the air inlet directions of the front air interface and the rear air interface are downward and are vertical to the air inlet direction of the mixed gas spray gun. The air inflow of the front air interface and the air inflow of the rear air interface are larger than the air inflow of the air inlet of the mixed gas spray gun.
In addition, flow regulating valves are respectively arranged on the mixed gas spray gun, the front air interface and the rear air interface.
The specific principle of the device of the embodiment is as follows: the natural gas is firstly combusted through the inlet of the combustor to be heated to the set tail gas treatment temperature. The tail gas enters from the left side and the right side of the furnace body in two paths. Wherein the tail gas inlets on both sides are respectively deviated from the central line of the incinerator. The air is divided into four strands, wherein the air enters the tail gas to be mixed and combusted with the tail gas mainly through the front and back two strands of the top part of the combustor, and a small air strand is respectively arranged at the tail gas inlets of the combustor and the tail gas inlet of the tail gas to be mixed with the high-temperature tail gas to be introduced into the furnace body in advance to carry out pre-combustion so as to ensure the. Can form the vortex in the furnace body under above-mentioned air inlet arrangement mode, make air and tail gas intensive mixing, promote combustion efficiency, guarantee tail gas treatment effect.
Example 2
The present embodiment is different from embodiment 1 in that: the gas inlet directions of the two mixed gas spray guns deviate from the central line of the furnace body by 0.1 time of the diameter distance of the furnace body on the cross section of the furnace body.
Example 3
The present embodiment is different from embodiment 1 in that: the gas inlet directions of the two mixed gas spray guns deviate from the central line of the furnace body by 0.2 times of the diameter distance of the furnace body on the cross section of the furnace body.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent structure transform of doing to above embodiment the utility model discloses technical scheme's protection scope.
Claims (10)
1. A tail gas direct-fired furnace with multiple air inlets comprises a furnace body (1), wherein the front end of the furnace body is provided with a burner inlet (2), and the tail part of the side wall of the furnace body is provided with a waste gas treatment rear outlet (3); the method is characterized in that: two sides of the side wall of the furnace body are respectively horizontally and oppositely provided with two mixed gas spray guns (4), and the gas inlet directions of the two mixed gas spray guns deviate from the central line of the furnace body on the cross section of the furnace body and are respectively higher and lower than the central line; the mixed gas spray gun is provided with a tail gas inlet and an air inlet (5); the top of the side wall of the furnace body is also provided with a front air interface (6) and a rear air interface (7); the front air interface and the rear air interface are respectively positioned in front of and behind the mixed gas spray gun.
2. The tail gas direct combustion furnace according to claim 1, wherein the gas inlet directions of the two mixed gas injection lances are deviated from the center line of the furnace body by 0.1 to 0.2 times of the diameter of the furnace body in the cross section of the furnace body.
3. The tail gas direct combustion furnace according to claim 2, wherein the gas inlet directions of the two mixed gas injection lances are deviated from the center line of the furnace body by a distance of 0.15 times the diameter of the furnace body in the cross section of the furnace body.
4. The tail gas direct combustion furnace according to claim 1, wherein the mixed gas spray gun comprises a shell (8) and a plurality of tail gas pipes (9), the tail gas pipes are arranged in the shell, and tail gas inlets are arranged on the tail gas pipes; an air inlet is formed in the side wall of the shell.
5. The direct-fired furnace of claim 1, wherein the air intake direction of the front air port and the rear air port is a downward direction perpendicular to the air intake direction of the mixed gas injection lance.
6. The exhaust gas direct combustion furnace according to claim 1, wherein the air inflow of the front air interface and the rear air interface is larger than the air inflow of the air inlet of the mixed gas injection lance.
7. The direct-fired furnace of claim 1, wherein the mixed gas injection lance, the front air port and the rear air port are respectively provided with a flow control valve.
8. The tail gas direct combustion furnace according to claim 1, wherein the rear end of the furnace body is provided with an observation window (10).
9. The tail gas direct combustion furnace of claim 1, wherein the side wall of the furnace body is provided with an access hole (11), a pressure gauge (12) and a temperature gauge (13).
10. The direct-fired tail gas furnace according to claim 1, wherein a support base (14) is provided on the side wall of the furnace body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921590404.5U CN211176841U (en) | 2019-09-23 | 2019-09-23 | Tail gas direct-fired furnace with multiple air inlets |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921590404.5U CN211176841U (en) | 2019-09-23 | 2019-09-23 | Tail gas direct-fired furnace with multiple air inlets |
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| Publication Number | Publication Date |
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| CN211176841U true CN211176841U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921590404.5U Active CN211176841U (en) | 2019-09-23 | 2019-09-23 | Tail gas direct-fired furnace with multiple air inlets |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113491351A (en) * | 2021-06-07 | 2021-10-12 | 中国科学院深圳先进技术研究院 | Electronic cigarette utensil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113491351A (en) * | 2021-06-07 | 2021-10-12 | 中国科学院深圳先进技术研究院 | Electronic cigarette utensil |
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Address after: Building 4, No. 9, 17th Street, Baiyang Street, Qiantang District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Zhejiang Jinggong New Material Technology Co.,Ltd. Address before: 310018 building 4, No. 9, No. 17 street, Qiantang New Area (Xiasha), Jianggan District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG JINGGONG NEW MATERIAL TECHNOLOGY Co.,Ltd. |