CN208833018U - The direct-fired device of low-temperature flue gas in a kind of pair of pipeline - Google Patents
The direct-fired device of low-temperature flue gas in a kind of pair of pipeline Download PDFInfo
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- CN208833018U CN208833018U CN201821601045.4U CN201821601045U CN208833018U CN 208833018 U CN208833018 U CN 208833018U CN 201821601045 U CN201821601045 U CN 201821601045U CN 208833018 U CN208833018 U CN 208833018U
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- flue gas
- spray gun
- low
- temperature flue
- short tube
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Abstract
The utility model discloses the direct-fired device of low-temperature flue gas in a kind of pair of pipeline, including low-temperature flue gas road, described device further includes steel short tube, flue gas turbulence plate, spray gun, rifle packet and spiral channel；Steel short tube both ends are fixedly connected by flange with low-temperature flue gas road, and the surfaces externally and internally of steel short tube is respectively equipped with flame retardant coating and insulating layer；Multiple flue gas turbulence plates are equipped on the inside of the steel short tube, the flue gas turbulence plate is fixedly connected with flame retardant coating；Multiple groups spray gun and rifle packet are equipped on the outside of the steel short tube, the spiral channel is set to the oral area of rifle packet, and spray gun is sealedly and fixedly connected by the snib being arranged in gun body with the spiral channel.The utility model carries out heat temperature raising appropriate on the basis of making full use of low-temperature flue gas waste heat; it to meet flue gas purifying technique technical requirements, had not only made full use of waste heat but also had protected environment, secondly described device structure is simple; service life of lance is longer, advantageously reduces the cost of investment of fixed assets.
Description
Technical field
The utility model belongs to environmental protection and energy saving instrument technical field, and in particular to the low-temperature flue gas in a kind of pair of pipeline is direct
The device of heating.
Background technique
Iron and steel enterprise is both the major power consumer of industrial enterprise and the key area of environmental pollution.Iron and steel enterprise
The pollution of multiple types of the pollution comprising three kinds of solid waste, waste liquid and exhaust gas forms, wherein exhaust emission includes harmful components to environment
Influence to greenhouse effects of pollution and temperature.After the exhaust gas of iron and steel enterprise is mainly derived from solid fuel and gas fuel combustion
A kind of gaseous waste products formed, not only there are also SO for the gaseous waste products (referred to as: flue gas)2、NOXEtc. harmful substances, but also have
There is certain temperature, the rising of ambient temperature can be brought.Now in order to solve the environmental pollution influence degree of flue gas, realizing
Flue gas heat is sufficiently recycled and dedusting on the basis of, and start to carry out flue gas desulphurization and denitration, take off the purifications such as white disposition.Mesh
The desulfurization method of preceding flue gas mainly has three ways, such as that wet process, semidry method and dry method, denitration mode mainly include active carbon and catalysis
Two kinds of methods of agent, but with the proviso that must assure that low and with 180 DEG C -280 DEG C the temperature condition of dust content, therefore flue gas
Carrying out denitration again by desulfurization is the reasonable technique of comparison, but because temperature of the flue gas after desulfurization is about 50 DEG C -160 DEG C (wet
Method desulfurization is lower limit value, dry desulfurization is upper limit value), i.e. low-temperature flue gas, therefore to the low-temperature flue gas after desulfurization before entering denitration
It needs to carry out heat temperature raising processing, is not otherwise able to satisfy process specifications.
Traditionally mainly have the mode of low-temperature flue gas heating using external furnace method and two kinds of heat exchanger method heating
Mode.External hot-blast stove heating is that the high-temperature flue gas of Combustion of Hot Air Furnace generation is entered low-temperature flue gas pipeline through hot-blast pipe line to mix
It closing and improves temperature, it is contemplated that the high-temperature flue gas feature after Combustion of Hot Air Furnace, heating furnace must configure that resistance to material is heat-insulated and utilidor,
Not only bring the investment of equipment larger in this way, and still can because caused by heat dissipation of pipeline heating efficiency decline.Heat exchange heating
It needs to configure good high-temperature medium and is just able to achieve heating target, finally bring uneconomical, while the type selecting and material of heat exchanger
Matter can need biggish cost of investment.
Therefore, it obtains to the suitably new heating method of low-temperature flue gas, not only can farthest reduce process heat loss,
And can be reduced equipment land occupation and investment, it is provided simultaneously with the ability of dynamic regulation heating temperature, is just able to satisfy so existing
Flue gas purifying technique technical requirements.
Summary of the invention
The purpose of this utility model is in view of the above-mentioned problems, providing the direct-fired dress of low-temperature flue gas in a kind of pair of pipeline
It sets, burner is directly installed on low-temperature flue gas pipeline, the high-temp waste gas generated by burner is directly low in pipeline
Warm flue gas is mixed and is heated up, to meet the temperature requirement of gas cleaning disposing technique.
The utility model is achieved through the following technical solutions:
A kind of low-temperature flue gas direct-fired device in pair of pipeline, including low-temperature flue gas road, described device further include steel
Short tube, flue gas turbulence plate, spray gun, rifle packet and spiral channel processed；Steel short tube both ends pass through flange and low-temperature flue gas road
It is fixedly connected, the surfaces externally and internally of steel short tube is respectively equipped with flame retardant coating and insulating layer；Multiple cigarettes are equipped on the inside of the steel short tube
Gas turbulence plate, the flue gas turbulence plate are fixedly connected with flame retardant coating；Multiple groups spray gun and rifle packet, institute are equipped on the outside of the steel short tube
The number for stating spray gun and rifle packet is corresponding；Rifle packet bottom is fixedly connected with insulating layer, and the oral area of rifle packet is obliquely installed and and steel
Short tube forms angle, which is acute angle, and the spray gun is inserted into the inside of steel short tube by rifle packet；The spiral channel is set to
The oral area of rifle packet, spray gun are sealedly and fixedly connected by the snib being arranged in gun body with the spiral channel.
The further improvement project of the utility model is that the spray gun is configured with fuel channel, fuel valve, primary combustion-supporting sky
Air valve, secondary combustion-supporting air valve and ignition；The ignition is set in the fuel channel inside spray gun, spray gun
Head is equipped with fuel valve, and body of spray gun rifle two sides are respectively equipped with primary air valve and secondary combustion-supporting air valve；The fuel valve,
Primary air valve and secondary combustion-supporting air valve are connect by body of spray gun rifle with fuel channel.
Steel short tube described in the utility model using the structure for matching thermal insulation material outside inner lining refractory material, steel stub length by
Spray gun quantity determines；The device for changing high-temperature flue gas direction is arranged in the flue gas turbulator on the inside of short tube, it is therefore an objective to improve mixed
Close effect；The spray gun is to provide fuel to clean-burning place under the collective effect of combustion air and ignition；
The rifle packet and spiral channel be spray gun is fixed on steel short tube, and be fixed using 90 ° of spiral bayonet apparatus and
Sealing is so that it is convenient in disassembling section；The ignition is the auto-power on igniting under temperature action, with ensure fuel and
Combustion air sustained combustion state always.
The further improvement project of the utility model is that the number of the spray gun and rifle packet is by flue gas in low-temperature flue gas road
Temperature and flow determine；Adjacent spray gun spacing distance on steel short tube is greater than 200mm.The control of above-mentioned spacing distance can be true
Protect the abundant mixing of high/low temperature flue gas.
The further improvement project of the utility model is that the section and steel short tube of the lance outlet are radially vertical.On
The setting for stating vertical structure can reduce high-temp waste gas and directly impact the damage of short tube bring.
The further improvement project of the utility model is, the flue gas turbulence plate with two for one group, along the flame retardant coating
Exit symmetrical above and below set on spray gun, each spray gun are correspondingly provided with one group of flue gas turbulence plate.
The further improvement project of the utility model is that the flame retardant coating uses and lays bricks or spray formation, the flame retardant coating
With a thickness of 50-250mm.The thickness of the flame retardant coating is determined by the calorific value and high-temperature flue gas amount of fuel.
The further improvement project of the utility model is that the insulating layer is kept the temperature using rock wool or mineral wool, described
Insulation layer thickness is 50-100mm.
The further improvement project of the utility model is that the diameter of the steel short tube is identical as low-temperature flue gas road diameter.
The utility model compared with prior art, has the advantages that
(1) the direct-fired device of low-temperature flue gas in a kind of pair of pipeline described in the utility model can be realized to gas
Body, liquid and solid fuel carry out low-temperature flue gas of the burning to generate in high-temp waste gas pipeline and are mixed and heated up, and
The spray gun has online ignition function, can prevent the suddenly change and automatic ignition of lance combustion process, to ensure that spray gun begins
Eventually in burning working condition.In operating process, the low-temperature flue gas that can use flowing carries out cooling protection to burner, furthermore
Also deep combustion processing can be carried out to a small amount of CO contained in former low-temperature flue gas, eventually by the high-temperature flue gas amount for adjusting burner
Meet the temperature requirement of gas cleaning disposing technique to improve low-temperature flue gas temperature in pipeline.
(2) the utility model carries out heat temperature raising appropriate on the basis of making full use of low-temperature flue gas waste heat, to meet
Flue gas purifying technique technical requirements can either make full use of the waste heat of low-temperature flue gas in this way, and can protect environment.
(3) the utility model utilizes the main feature of low-temperature flue gas, and the high-temperature area shell of spray gun is in the cold of low-temperature flue gas
But protect lower service life longer, so as to reduce maintenance cost.
(4) the utility model can reduce traditional heating mode according to direct heater on former low-temperature flue gas pipeline and need
The equipment investment in the occupancy wanted certain place and increasing, advantageously reduces the cost of investment of fixed assets.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the utility model spray boom partial schematic diagram.
Fig. 3 is the utility model high and low temperature flue gas mixing schematic diagram
Serial number in figure, 1- steel short tube；2- flue gas turbulence plate；3- spray gun；4- rifle packet；5- spiral channel；6- low-temperature flue gas
Road；7- flange；8- flame retardant coating；9- insulating layer；10- snib；31- fuel channel；32- fuel valve, 33- primary air valve,
34- secondary combustion-supporting air valve, 35- ignition.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and examples.
Refering to fig. 1-2, the direct-fired device of low-temperature flue gas in a kind of pair of pipeline, including low-temperature flue gas road 6, the dress
Set further includes steel short tube 1, flue gas turbulence plate 2, spray gun 3, rifle packet 4 and spiral channel 5；1 both ends of steel short tube pass through
Flange 7 is fixedly connected with low-temperature flue gas road 6, and the surfaces externally and internally of steel short tube 1 is respectively equipped with flame retardant coating 8 and insulating layer 9；The steel
Multiple flue gas turbulence plates 2 are equipped on the inside of short tube 1 processed, the flue gas turbulence plate 2 is fixedly connected with flame retardant coating 8；The steel short tube 1
Outside is equipped with multiple groups spray gun 3 and rifle packet 4, and the number of the spray gun 3 and rifle packet 4 is corresponding；4 bottom of rifle packet and insulating layer 9 are fixed
Connection, the oral area of rifle packet 4 are obliquely installed and form angle with steel short tube 1, which is acute angle, and the spray gun 3 passes through rifle packet 4
It is inserted into the inside of steel short tube 1；The spiral channel 5 is set to the oral area of rifle packet 4, and spray gun 3 passes through the snib 10 being arranged in gun body
It is sealedly and fixedly connected with the spiral channel 5.
In the present embodiment, the spray gun 3 configured with fuel channel 31, fuel valve 32, primary air valve 33, secondary help
Fire air valve 34 and ignition 35；The ignition 35 is set in the fuel channel 31 inside spray gun 3, spray gun 3
Head is equipped with fuel valve 32, and 3 gun body two sides of spray gun are respectively equipped with primary air valve 33 and secondary combustion-supporting air valve 34；It is described
Fuel valve 32, primary air valve 33 and secondary combustion-supporting air valve 34 are connect by body of spray gun rifle with fuel channel 31.
In the present embodiment, the number of the spray gun 3 and rifle packet 4 is determined by the temperature and flow of flue gas in low-temperature flue gas road；
The spacing distance on steel short tube of adjacent spray gun 3 is greater than 200mm.
In the present embodiment, the section that the spray gun 3 exports is radial vertical with steel short tube 1.
In the present embodiment, the flue gas turbulence plate 2 with two be one group, along the flame retardant coating 8 it is symmetrical above and below be set to spray gun 3
Exit, each spray gun 3 is correspondingly provided with one group of flue gas turbulence plate 2.
In the present embodiment, the flame retardant coating 8 using laying bricks or sprays formation, the flame retardant coating 8 with a thickness of 50-250mm.
In the present embodiment, the insulating layer 9 is kept the temperature using rock wool or mineral wool, and the insulating layer 9 is with a thickness of 50-
100mm。
In the present embodiment, the diameter of the steel short tube 1 is identical as 6 diameter of low-temperature flue gas road.
Referring to Fig. 3, the carrying out practically process of the utility model is as follows:
One, steel short tube 1 identical with 6 diameter of low-temperature flue gas pipeline is mounted on to the low-temperature flue gas of heating by flange 7
On pipeline 6, spray gun 3 is inserted into the rifle packet 4 of steel short tube 1, and is fastened using spiral channel 5；
Two, ignition 35 is opened, fuel valve 32 and primary air valve 33 are opened, in the work of ignition 8
Light spray gun 3 under；
Three, air mass flow in the flow and primary air valve 33, secondary combustion-supporting air valve 34 by adjusting fuel
Flue gas turbulence plate is encountered after the optimal combustion state of spray gun 3, the high-temperature flue gas after the burning of spray gun 3 are gone out from lance outlet to realize
2 and change airflow direction, contacted with the low-temperature flue gas in pipeline and it is heated, to realize in gas cleaning disposing technique
The abundant mixing of high and low temperature flue gas.
Above-described is only preferred embodiments of the present invention, it is noted that for the ordinary skill of this field
For personnel, without departing from the concept of the present invention, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.
Claims (8)
1. the direct-fired device of low-temperature flue gas in a kind of pair of pipeline, including low-temperature flue gas road (6), it is characterised in that: described
Device further includes steel short tube (1), flue gas turbulence plate (2), spray gun (3), rifle packet (4) and spiral channel (5)；The steel is short
Pipe (1) both ends are fixedly connected by flange (7) with low-temperature flue gas road (6), and the surfaces externally and internally of steel short tube (1) is respectively equipped with fire resisting
Layer (8) and insulating layer (9)；Be equipped with multiple flue gas turbulence plates (2) on the inside of the steel short tube (1), the flue gas turbulence plate (2) with
Flame retardant coating (8) is fixedly connected；Multiple groups spray gun (3) and rifle packet (4), the spray gun (3) and rifle are equipped on the outside of the steel short tube (1)
The number for wrapping (4) is corresponding；Rifle packet (4) bottom is fixedly connected with insulating layer (9), and the oral area of rifle packet (4) is obliquely installed and and steel
Short tube (1) processed forms angle, which is acute angle, the inside that the spray gun (3) passes through rifle packet (4) insertion steel short tube (1)；Institute
The oral area that spiral channel (5) are set to rifle packet (4) is stated, spray gun (3) passes through the snib (10) and the spiral channel being arranged in gun body
(5) it is sealedly and fixedly connected.
2. the direct-fired device of low-temperature flue gas in a kind of pair of pipeline according to claim 1, it is characterised in that: described
Spray gun (3) configured with fuel channel (31), fuel valve (32), primary air valve (33), secondary combustion-supporting air valve (34) with
And ignition (35)；The ignition (35) is set in spray gun (3) internal fuel channel (31), spray gun (3) head
Portion is equipped with fuel valve (32), and spray gun (3) gun body two sides are respectively equipped with primary air valve (33) and secondary combustion-supporting air valve
(34)；The fuel valve (32), primary air valve (33) and secondary combustion-supporting air valve (34) pass through body of spray gun rifle and combustion
Expect channel (31) connection.
3. the direct-fired device of low-temperature flue gas in a kind of pair of pipeline according to claim 2, it is characterised in that: described
The number of spray gun (3) and rifle packet (4) is determined by the temperature and flow of flue gas in low-temperature flue gas road；Adjacent spray gun (3) is short in steel
Spacing distance is greater than 200mm on pipe.
4. the direct-fired device of low-temperature flue gas in a kind of pair of pipeline according to claim 3, it is characterised in that: described
The section of spray gun (3) outlet is radial vertical with steel short tube (1).
5. the direct-fired device of low-temperature flue gas in a kind of pair of pipeline according to claim 4, it is characterised in that: described
Flue gas turbulence plate (2) with two be one group, along the flame retardant coating (8) exit symmetrical above and below set on spray gun (3), each spray gun
(3) it is correspondingly provided with one group of flue gas turbulence plate (2).
6. the direct-fired device of low-temperature flue gas in a kind of pair of pipeline according to claim 1, it is characterised in that: described
Flame retardant coating (8) using laying bricks or sprays formation, the flame retardant coating (8) with a thickness of 50-250mm.
7. the direct-fired device of low-temperature flue gas in a kind of pair of pipeline according to claim 1, it is characterised in that: described
Insulating layer (9) is kept the temperature using rock wool or mineral wool, and the insulating layer (9) is with a thickness of 50-100mm.
8. the direct-fired device of low-temperature flue gas in a kind of pair of pipeline according to claim 1, it is characterised in that: described
The diameter of steel short tube (1) is identical as low-temperature flue gas road (6) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821601045.4U CN208833018U (en) | 2018-09-29 | 2018-09-29 | The direct-fired device of low-temperature flue gas in a kind of pair of pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821601045.4U CN208833018U (en) | 2018-09-29 | 2018-09-29 | The direct-fired device of low-temperature flue gas in a kind of pair of pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208833018U true CN208833018U (en) | 2019-05-07 |
Family
ID=66318290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821601045.4U Active CN208833018U (en) | 2018-09-29 | 2018-09-29 | The direct-fired device of low-temperature flue gas in a kind of pair of pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208833018U (en) |
-
2018
- 2018-09-29 CN CN201821601045.4U patent/CN208833018U/en active Active
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