CN204569824U - A kind of radiation thermal decomposition tube and pulverized coal pyrolysis rotary kiln - Google Patents
A kind of radiation thermal decomposition tube and pulverized coal pyrolysis rotary kiln Download PDFInfo
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- CN204569824U CN204569824U CN201520191382.0U CN201520191382U CN204569824U CN 204569824 U CN204569824 U CN 204569824U CN 201520191382 U CN201520191382 U CN 201520191382U CN 204569824 U CN204569824 U CN 204569824U
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- tube
- thermal decomposition
- radiator
- radiation thermal
- radiator tube
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The utility model relates to a kind of radiation thermal decomposition tube and pulverized coal pyrolysis rotary kiln.Involved radiation thermal decomposition tube comprises three sections of radiator tubes connected successively, respectively is the first radiator tube, the second radiator tube and the 3rd radiator tube, is provided with fuel burner nozzle and lighter for ignition in described second radiator tube.Involved pulverized coal pyrolysis rotary kiln comprises revolution body of heater, is provided with some above-mentioned radiation thermal decomposition tubes in described body of heater.Pulverized coal pyrolysis rotary kiln of the present utility model utilizes fume afterheat preheating and drying raw coal, and utilize semicoke waste heat warm-up combustion-supporting air and coal gas, heat utilization efficiency is high, and fine coal drying and preheating, pyrolysis and the design of semicoke cooling integration, simplify pyrolytic process.Rotary kiln of the present utility model, heat interchanging area is large, and process coal amount is large, and structure is simple, is applicable to more than the 1000000 tons extensive pyrolysis production and applications of fine coal.
Description
Technical field
The utility model relates to pulverized coal pyrolysis device, is specifically related to a kind of radiation thermal decomposition tube and pulverized coal pyrolysis rotary kiln.
Background technology
There is complex structure in existing pulverized coal pyrolysis rotary kiln, the problem that cost is high and heat transfer area is little and thermo-efficiency is low.
Summary of the invention
The defect existed for prior art or deficiency, one of the purpose of this utility model there is provided a kind of radiator tube.
Radiation thermal decomposition tube provided by the utility model comprises three sections of radiator tubes be communicated with successively, respectively is the first radiator tube, the second radiator tube and the 3rd radiator tube, is provided with fuel burner nozzle and lighter for ignition in described second radiator tube.
Described fuel burner nozzle is linked with gas conveying tube, and described gas conveying tube is through the first radiator tube.
Expansion pipe is adopted to connect between adjacent radiation pipe.
The material of described first radiator tube is carbon steel; The high temperature resistant stainless steel steel pipe of the material of described second radiator tube to be liner be silicon carbide; The material of described 3rd radiator tube is carbon steel; Stainless steel expansion pipe is adopted to connect between adjacent radiation pipe.
In described second radiator tube, flame detecting probe is installed.
The outer wall of described radiation thermal decomposition tube is provided with anti-raising material unit, the length direction of this dust-proof device extends along the axis of radiation thermal decomposition tube, described dust-proof device is provided with mounting face and a drift angle, described mounting face is arranged on radiation thermal decomposition tube outer wall, and described drift angle is relative with described mounting face.
Described anti-raising material unit is welded on radiator tube outer wall by two pieces of rectangular plates and is formed, and its cross section is trilateral, and wherein vertex angle direction is identical or parallel with the radiator tube sense of rotation be arranged in revolving drum.
The utility model additionally provides a kind of pulverized coal pyrolysis rotary kiln.
Pulverized coal pyrolysis rotary kiln provided by the utility model comprises revolution body of heater, preheating section, pyrolysis section and cooling section is provided with in this revolution body of heater, some above-mentioned radiation thermal decomposition tubes are installed in described body of heater, the first radiator tube of radiation thermal decomposition tube is positioned at cooling section, the second radiator tube is positioned at pyrolysis section, the 3rd radiator tube is positioned at preheating section.Be provided with guide spiral in described revolution body of heater, described radiation thermal decomposition tube is arranged on guide spiral.
Drift angle on described dust-proof device points to identical or parallel with the sense of rotation of described pulverized coal pyrolysis radiator tube rotary kiln.
The effect that the utility model obtains is:
(1) the utility model increases substantially the heat transfer area of rotary kiln, the external heat type rotary furnace of same diameter, and heat transfer area improves 3-8 doubly, increases substantially production capacity;
(2) the utility model adopts syllogic radiator tube, makes full use of physical thermal warm-up combustion-supporting air and the coal gas of semicoke, not only energy-conservation, and provides the guarantee of high-temperature gas for self-propagating fuel burner nozzle.
(3) self-propagating burner of the present utility model, significantly extends the heating segment length of vertical barrel type radiator tube, adds the temperature homogeneity of radiator tube heating section, avoid foot high temperature scaling loss radiator tube, favourable prolongation pulverized coal pyrolysis degree segment length simultaneously, increases pyrolysis time, productivity gain.
(4) adopt differing materials, significantly reduce radiator tube cost, avoid waste of material.
(5) differing materials section adopts expansion joint to connect, and has both solved the problem of metal tube thermal expansion, and has solved again the connectivity problem of differing materials.
(6) guide spiral is combined with radiator tube support, body of heater horizontal positioned, avoids kiln body inclined design, be convenient to kiln running body, simplified construction.
(7) on radiator tube, welding prevents raising material unit, for reduction coal gas dust removal load, and favourable high-temperature dust removal.
In sum, pulverized coal pyrolysis rotary kiln of the present utility model utilizes fume afterheat preheating and drying raw coal, and utilize semicoke waste heat warm-up combustion-supporting air and coal gas, heat utilization efficiency is high, and fine coal drying and preheating, pyrolysis and the design of semicoke cooling integration, simplify pyrolytic process.Rotary kiln of the present utility model, heat interchanging area is large, and process coal amount is large, and structure is simple, is applicable to more than the 1000000 tons extensive pyrolysis production and applications of fine coal.
Accompanying drawing explanation
Fig. 1 is the structural reference schematic diagram of the utility model radiation thermal decomposition tube;
Fig. 2 is the structural reference schematic diagram of the utility model pulverized coal pyrolysis rotary kiln;
Fig. 3 is the structural representation of dust-proof device of the present utility model.
The union of 1-coal gas; The import of 2-radiator tube space gas; 3-heating gas exports; The dynamic seal of 4-semicoke gas;
5-radiation thermal decomposition tube; 6-turns round body of heater; 7-transmission master wheel; 8-wheel belt; The dynamic seal of 9-flue gas; 10-exhanst gas outlet; 11-radiator tube exports; 12-run coal bin; 13-fine coal conveying reamer; 14-entrance lock; 15-main transmission gear; 16-built-in ignitor, fire monitor equipment; 17-insulating layer of furnace body; 18-semicoke exports; 19-prevents raising material unit.
Embodiment
The utility model radiation thermal decomposition tube is overlength flame vertical barrel type gas fired radiant tubes, by coal gas self-propagating combustion in pipe, obtain uniform heat heating tube wall, heat is passed to by the material heated by radiative transfer mode by tube wall, certainly also comprise material contact radiator tube outer wall, by heat transfer by conduction, heat in pipe is passed to heating object material.
Supplied outward by stove needed for the burning of radiator tube inner burner, be connected by the outer coal gas source of the gas pipe in radiator tube and stove, realize radiator tube combustion, because radiator tube is fixed on rotary kiln inwall, rotate together with rotary kiln, the outer coal gas source of the utility model stove is static fixing gas pipe, radiation thermal decomposition tube rotates, need to be connected and sealed with sound union, its principle of work adopts between sound pipeline to have the sealing of elastic silicon rubber loop, ensure that coal gas sends into radiator tube combustion smoothly, can not gas leakage be had in sound junction simultaneously.
Embodiment 1:
With reference to figure 1, the radiation thermal decomposition tube of this embodiment comprises vertical barrel type gas fired radiant tubes, in axial direction be followed successively by, first radiator tube 101 is the cooling section of cooling semicoke preheated air and coal gas, second radiator tube 106 is the heating section of gas-fired, 3rd radiator tube 107 is flue gas cooling, obtains preheating section for preheating and drying fine coal raw material.
Coal gas burner and ignition 108 and flame detecting probe 109 are installed in second radiator tube 106.Gas conveying tube 102 enters the second radiator tube 106 through the first radiator tube 101, is connected with coal gas burner 104.
Wherein: preheating section adopts plain carbon stool pipe; Heating section adopts the inner high temperature resistant stainless steel steel pipe (310S material) being provided with lining silicon carbide lining 105; Cooling section adopts plain carbon stool pipe.Stainless steel expansion pipe (310s material) 103 is adopted to connect between adjacent radiation pipe.
Embodiment 2:
Composition graphs 1-Fig. 3, the structure of the rotary kiln device that this embodiment provides comprises: run coal bin 12, revolution body of heater 6, revolution body of heater 6 are driven by transmission master wheel 7, wheel belt 8 and main transmission gear 15, revolution body of heater 6 is provided with heating gas outlet 3, exhanst gas outlet 10, insulating layer of furnace body 17 and semicoke outlet 18, raw coal is conveyed into revolution body of heater 6 by fine coal conveying reamer 13, and is sealed by entrance lock 14 between fine coal conveying reamer 13 and revolution body of heater 6; Be tightly connected by coal gas dynamic sealing means 4 between heating gas outlet 3 and revolution body of heater.
Radiation thermal decomposition tube 5 is axially arranged in parallel along revolution body of heater 6, ring radiation tube layer is formed at rotary kiln radial section, depending on rotary kiln sectional area size, around rotary kiln center, arrange 1-4 layer radiator tube, increase substantially heat interchanging area, in the gap of fine coal between radiation thermal decomposition tube, be transferred out rotary kiln with solid of revolution flowing by after heat drying, pyrolysis and cooling.Depending on the requirement of kiln body diameter and heat-transfer surface, the radiator tube of the diameter of placement diameter 80-400mm.
Radiation pyrolysis tubular construction is with shown in embodiment 1, and it adopts the fuel burner nozzle of overlength flame self-propagating, and combustion gas and air repeatedly mix to extend the length of flame, avoid foot overheated.Adopt coal gas union 1 to be tightly connected between the total gas conveying tube of the gas inlet of radiation thermal decomposition tube and outside, radiation thermal decomposition tube outlet 11 is communicated with exhanst gas outlet 10.
Radiator tube is fixed on the blade of guide spiral of rotary kiln inwall, makes guide spiral not only play guide effect, and plays the effect supporting radiator tube.
Every root radiation thermal decomposition tube is welded with and prevents raising material unit 19, avoid the lifting in rotary course, suppress dust to occur.The structure of anti-raising material unit is triangular structure, and wherein vertex angle direction is consistent with the radiator tube sense of rotation be arranged in revolving drum.Triangular structure is welded on radiator tube outer wall by two pieces of rectangular plates and is formed, and ensures, when the radiator tube installed in revolving drum rotates together with cylindrical shell, not easily to take up the material in cylinder, avoid lifting, avoids because lifting causes a large amount of dust.
The working process of this rotary kiln is:
The rotary kiln of diameter 1-8 rice is rotated counterclockwise according to stove, and speed of rotation is that the fine coal of 0.5-4 rev/min, 0-30 millimeter particle diameter is admitted to rotary type pyrolysis oven, runs from preheating section to cooling section direction.
Send into the fine coal in stove, first by with the heat exchange of preheating section radiator tube, be heated to after 300 DEG C, realize drying and preheating process; The flue gas simultaneously produced after radiator tube combustion is cooled to below outside 200 DEG C of eliminating stoves; Secondly, the fine coal after preheating continues to run, and enters pyrolysis section, the heat that self-propagating burner in radiator tube produces, radiator tube outside wall temperature is made to reach 500-800 DEG C, for the fine coal after pyrolysis preheating, after fine coal is heated to 450-600 DEG C of abundant pyrolysis, become semicoke and enter cooling section, by the radiator tube heat exchange with cooling section, the semicoke of about 500 DEG C is cooled to below 250 DEG C, and combustion air and coal gas obtain preheating simultaneously, reach 300-400 DEG C, for self-propagating burner combustion.
Outside after cooling, semicoke is come out of the stove, the dust-laden produced after pyrolysis discharges out of the furnace from feed end direction containing tar coal gas, carries out further purifying, receiving the process such as oil, desulfurization.
Fine coal goes out pyrolysis oven from entering pyrolysis oven to becoming semicoke, need through 40 minutes to 2 hours.
Claims (10)
1. a radiation thermal decomposition tube, is characterized in that, comprises three sections of radiator tubes be communicated with successively, respectively is the first radiator tube, the second radiator tube and the 3rd radiator tube, is provided with fuel burner nozzle and lighter for ignition in described second radiator tube.
2. radiation thermal decomposition tube as claimed in claim 1, it is characterized in that, described fuel burner nozzle is communicated with gas conveying tube, and described gas conveying tube is through the first radiator tube.
3. radiation thermal decomposition tube as claimed in claim 1, is characterized in that, adopt expansion pipe to connect between adjacent radiation pipe.
4. radiation thermal decomposition tube as claimed in claim 1, it is characterized in that, the material of described first radiator tube is carbon steel; The high temperature resistant stainless steel steel pipe of the material of described second radiator tube to be liner be silicon carbide; The material of described 3rd radiator tube is carbon steel; Stainless steel expansion pipe is adopted to connect between adjacent radiation pipe.
5. radiation thermal decomposition tube as claimed in claim 1, is characterized in that, be provided with flame detecting probe in described second radiator tube.
6. radiation thermal decomposition tube as claimed in claim 1, it is characterized in that, the outer wall of described radiation thermal decomposition tube is provided with anti-raising material unit, the length direction of this dust-proof device extends along the axis of radiation thermal decomposition tube, described dust-proof device is provided with mounting face and a drift angle, described mounting face is arranged on radiation thermal decomposition tube outer wall, and described drift angle is relative with described mounting face.
7. radiation thermal decomposition tube as claimed in claim 6, it is characterized in that, described anti-raising material unit is welded on radiator tube outer wall by two pieces of rectangular plates and is formed, and its cross section is trilateral, and wherein vertex angle direction is identical with the radiator tube sense of rotation be arranged in revolving drum.
8. a pulverized coal pyrolysis rotary kiln, it is characterized in that, comprise revolution body of heater, preheating section, pyrolysis section and cooling section is provided with in this revolution body of heater, radiation thermal decomposition tube described in the some arbitrary claims of claim 1-7 is installed in described body of heater, the first radiator tube of radiation thermal decomposition tube is positioned at cooling section, the second radiator tube is positioned at pyrolysis section, the 3rd radiator tube is positioned at preheating section.
9. pulverized coal pyrolysis rotary kiln as claimed in claim 8, it is characterized in that, be provided with guide spiral in described revolution body of heater, described radiation thermal decomposition tube is arranged on described guide spiral.
10. pulverized coal pyrolysis rotary kiln as claimed in claim 8, is characterized in that, the drift angle on described dust-proof device points to identical or parallel with the sense of rotation of described pulverized coal pyrolysis radiator tube rotary kiln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191382.0U CN204569824U (en) | 2015-03-31 | 2015-03-31 | A kind of radiation thermal decomposition tube and pulverized coal pyrolysis rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191382.0U CN204569824U (en) | 2015-03-31 | 2015-03-31 | A kind of radiation thermal decomposition tube and pulverized coal pyrolysis rotary kiln |
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| Publication Number | Publication Date |
|---|---|
| CN204569824U true CN204569824U (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520191382.0U Expired - Fee Related CN204569824U (en) | 2015-03-31 | 2015-03-31 | A kind of radiation thermal decomposition tube and pulverized coal pyrolysis rotary kiln |
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| Country | Link |
|---|---|
| CN (1) | CN204569824U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104745212A (en) * | 2015-03-31 | 2015-07-01 | 长安大学 | Radiation pyrolytic tube and pulverized coal pyrolytic rotary furnace |
| CN114196426A (en) * | 2021-11-22 | 2022-03-18 | 殷梅芳 | Flue gas heating pipeline in dry distillation kiln |
-
2015
- 2015-03-31 CN CN201520191382.0U patent/CN204569824U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104745212A (en) * | 2015-03-31 | 2015-07-01 | 长安大学 | Radiation pyrolytic tube and pulverized coal pyrolytic rotary furnace |
| CN114196426A (en) * | 2021-11-22 | 2022-03-18 | 殷梅芳 | Flue gas heating pipeline in dry distillation kiln |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20160331 |