CN205011715U - A anti -coking control system for air current bed coal gasifier - Google Patents
A anti -coking control system for air current bed coal gasifier Download PDFInfo
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- CN205011715U CN205011715U CN201520778920.6U CN201520778920U CN205011715U CN 205011715 U CN205011715 U CN 205011715U CN 201520778920 U CN201520778920 U CN 201520778920U CN 205011715 U CN205011715 U CN 205011715U
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Abstract
The utility model relates to an anti -coking control system for air current bed coal gasifier belongs to air current bed dry powder gasification reaction equipment field, the control system and the method of a concretely relates to air current bed coal gasifier anti -coking. Include: vaporizer and the raw gas export that links to each other with the vaporizer, the vaporizer inside with be used for control the temperature controller of the inside temperature of vaporizer links to each other, be provided with vaporizer temperature sensor in the vaporizer, be provided with raw gas exit temperature sensor in the raw gas export. Therefore, the utility model has the advantages of as follows: this control system and method can be better assurance gasification reaction, can avoid simultaneously the coking phenomenon to take place again.
Description
Technical field
The utility model relates to a kind of Controlling System of anti-coking, belongs to air flow bed dry powder gasification reaction apparatus field, is specifically related to a kind of Controlling System of air-flow bed coal-gasification stove anti-coking.
Background technology
Current, air flow bed dry powder equipment for gasification is often applied to bituminous mixing plant heating installation, dry-mix drying plant, rotary kiln heating installation at home.
Air flow bed dry powder equipment for gasification possesses that single furnace output is large, outlet coal gas is containing high, the handling advantage such as good of tar, efficiency of carbon conversion.But air flow bed dry powder equipment for gasification domestic is at present to the control of coking, belong to the control ash content in fuel being carried out slag tap after high temperature melt.
Owing to using slag tap technology, when this uses on asphalt mixing station equipment, dry-mix drying plant, rotary kiln heating installation for it, there is following shortcoming: (1) needs to consume a large amount of manpowers and goes to carry out slagging-off work; (2) require higher to its refractory materials use cost under this operating mode; (3) comparatively loaded down with trivial details to refractory materials later maintenance; (4) a large amount of coking in stove, causes gasification reaction normally to carry out.
In order to address this problem, make air flow bed dry powder equipment for gasification can apply bituminous mixing plant heating installation, dry-mix drying plant, rotary kiln heating installation preferably, the utility model proposes a kind of anti-coking process control method of air flow bed dry powder equipment for gasification being applicable to asphalt mixing station equipment, dry-mix drying plant, rotary kiln heating installation at this.
Utility model content
The utility model mainly solves the above-mentioned technical problem existing for prior art, provides a kind of Controlling System of air-flow bed coal-gasification stove anti-coking.This Controlling System can ensure gasification reaction preferably, coking phenomenon can be avoided again to occur simultaneously.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
A kind of anti-coking Controlling System for air-flow bed coal-gasification stove, comprise: vaporizer and the raw gas be connected with vaporizer export, described vaporizer inside is connected with the temperature regulator for controlling described vaporizer internal temperature, be provided with vaporizer temperature sensor in described vaporizer, described raw gas outlet is provided with raw gas outlet temperature sensor.
Optimize, above-mentioned a kind of anti-coking Controlling System for air-flow bed coal-gasification stove, described vaporizer temperature sensor comprises and is arranged at upper vaporizer temperature sensor in the upper and lower two portions of vaporizer and gasified chambers temp sensor respectively.
Optimize, above-mentioned a kind of anti-coking Controlling System for air-flow bed coal-gasification stove, described vaporizer temperature sensor and described raw gas outlet temperature sensor are arranged on vaporizer inwall respectively with on raw gas outlet inside wall.
Optimize, above-mentioned a kind of anti-coking Controlling System for air-flow bed coal-gasification stove, the middle part of described vaporizer is a cylindrical structural, and the two ends of this cylindrical structural are connected to the reducer of taper.
Optimize, above-mentioned a kind of anti-coking Controlling System for air-flow bed coal-gasification stove, described raw gas exit comprises an arcuate structure, and described raw gas outlet temperature sensor setting is on the inwall of arcuate structure.
Therefore, the utility model tool has the following advantages: this Controlling System can ensure gasification reaction preferably, coking phenomenon can be avoided again to occur simultaneously.
Accompanying drawing explanation
Accompanying drawing 1 is anti-coking Controlling System schematic diagram of the present utility model;
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.In figure, raw gas outlet temperature sensor 1, raw gas outlet 2, upper vaporizer temperature sensor 3, gasified chambers temp sensor 4, vaporizer 5.
Embodiment:
Asphalt mixing station equipment, dry-mix drying plant, rotary kiln heating installation use air flow bed dry powder equipment for gasification, that the hot industry combustion gas produced directly carries out secondary combustion to heat sand material, after heating sand material, the dust in its flue gas is filtered through sack cleaner.
Existing air flow bed dry powder equipment for gasification is first by the ash content high temperature melt in fuel matter, obtain the low cleaner raw gas of ash content, discharge (this process produces a large amount of coking) after ash content in fuel being formed liquid slag simultaneously, the industrial combustion gas be made into again carries out burning to heat sand material, and is filtered through sack cleaner by the dust in its flue gas.
Owing to being all equipped with sack cleaner in asphalt mixing station equipment, dry-mix drying plant, rotary kiln heating installation, all can carry out dust removal process to its final flue gas, therefore the slag tap Processes and apparatus that can omit in existing air flow bed dry powder equipment for gasification, the ash content of the raw gas containing ash is removed in sack cleaner.
Therefore, devise the anti-coking Controlling System for air-flow bed coal-gasification stove of the present utility model, comprise: vaporizer 5 and the raw gas be connected with vaporizer 5 export 2, vaporizer 5 inside is connected with the temperature regulator for controlling described vaporizer internal temperature, vaporizer inwall is provided with vaporizer temperature sensor, this vaporizer temperature sensor comprises and is arranged at upper vaporizer temperature sensor 3 on vaporizer upper and lower two portions inwall and gasified chambers temp sensor 4 respectively; The inwall of raw gas outlet 2 is provided with raw gas outlet temperature sensor 1.
In vaporizer, controlling coking temperature needs to determine according to the ash fusion point difference in the character of coal.The ash fusion point of general domestic coal dust is between 1100-1450, at above-mentioned applying working condition (high-temperature hot coal gas is used for the fields such as asphalt mixing dry heat) if take slag mode cleaning high-temp raw gas, facility investment can be made to strengthen, mainly decoking (coking be as the saying goes as slagging scorification), in addition, because the water-cooled used can cause some pollutions of water, also so the Environmental Inputs in this stage all can increase.Owing to adopting slag mode, so the temperature in vapourizing furnace higher than ash fusion point temperature, must flow into slagging scorification pond after making coal ash melt, and due to high temperature, refractory materials manufacturing cost can significantly increase, and meanwhile, the refractory materials life-span at high temperature can significantly reduce.
And at gas exit place, heating gas is being greater than the reduction due to temperature in course of conveying at ash fusion point temperature, can make will wherein partial melting coal ash cooling deposit on walling of flue, the blocking of flue can be caused.
In order to improve above-mentioned impact, through research and development, the utility model establish gasification temperature in stove controlled can meet gasification lower than 100-150 degree below coal dust ash fusion point and require and in stove coal ash substantially non-fusible, furnace exit temperature lower than in the scope of about 200 degree in stove, the good working state of high-temperature flue gas transport pipe not slagging scorification.
Therefore, the anti-coking control method for air-flow bed coal-gasification stove of the present utility model, the gasification temperature in control vaporizer is lower than within coal dust ash fusion point 100-150 degree; And the raw gas outlet temperature controlling to be connected with vaporizer is lower than the room temp 200 degree that gasifies.Carry out effective dedusting with the secondary combustion of grey high-temperature flue gas after oxygenating by the sack cleaner that asphalt mixing plant carries and reach state environmental emissioning standard.
As a kind of optimal way, to the slagging prevention process control method of the air flow bed dry powder equipment for gasification for asphalt mixing station equipment, dry-mix drying plant, rotary kiln heating installation be:
(1) different according to the ash content ash fusion point of Coal rank, the slagging prevention temperature near chamber wall areas (3,4 point for measuring temperature) in vaporizer is controlled at 1000 DEG C-1350 DEG C;
(2) different according to the ash content ash fusion point of Coal rank, the slagging prevention temperature of vaporizer raw gas exit (1 point for measuring temperature) is controlled at 900 DEG C-1250 DEG C;
According to this slagging prevention technological control temperature, both well can ensure gasification reaction, coking phenomenon can be avoided again to occur.
Such as: the 200 order coal dusts using Shenmu County at this type of vapourizing furnace, ash fusion point temperature is at this moment 1200 degree.In the process of gasification, operation control temperature is: gasification in-furnace temperature: about 1100 degree, temperature out is at about 1000 degree.Through about 20 days, about 10 hours every days, check after the duplication of production of about 2 tons of coal dusts per hour, in stove and transport pipe there is no a large amount of coking phenomenon, produce a desired effect.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the terms such as gas exit place temperature sensor 1, raw gas outlet 2, upper vaporizer temperature sensor 3, gasified chambers temp sensor 4, vaporizer 5 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (5)
1. the anti-coking Controlling System for air-flow bed coal-gasification stove, comprise: vaporizer and the raw gas be connected with vaporizer export, described vaporizer inside is connected with the temperature regulator for controlling described vaporizer internal temperature, it is characterized in that, be provided with vaporizer temperature sensor in described vaporizer, described raw gas outlet is provided with raw gas outlet temperature sensor.
2. a kind of anti-coking Controlling System for air-flow bed coal-gasification stove according to claim 1, it is characterized in that, described vaporizer temperature sensor comprises and is arranged at upper vaporizer temperature sensor in the upper and lower two portions of vaporizer and gasified chambers temp sensor respectively.
3. a kind of anti-coking Controlling System for air-flow bed coal-gasification stove according to claim 1, it is characterized in that, described vaporizer temperature sensor and described raw gas outlet temperature sensor are arranged on vaporizer inwall respectively with on raw gas outlet inside wall.
4. a kind of anti-coking Controlling System for air-flow bed coal-gasification stove according to claim 1, is characterized in that, the middle part of described vaporizer is a cylindrical structural, and the two ends of this cylindrical structural are connected to the reducer of taper.
5. a kind of anti-coking Controlling System for air-flow bed coal-gasification stove according to claim 1, it is characterized in that, described raw gas exit comprises an arcuate structure, and described raw gas outlet temperature sensor setting is on the inwall of arcuate structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520778920.6U CN205011715U (en) | 2015-10-09 | 2015-10-09 | A anti -coking control system for air current bed coal gasifier |
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| CN201520778920.6U CN205011715U (en) | 2015-10-09 | 2015-10-09 | A anti -coking control system for air current bed coal gasifier |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176593A (en) * | 2015-10-09 | 2015-12-23 | 廊坊德基机械科技有限公司 | Anti-coking control system and method for coal gasifier of entrained-flow bed |
| CN112251259A (en) * | 2020-11-05 | 2021-01-22 | 北京一亚高科能源科技有限公司 | Cylindrical gasification furnace |
| CN112251260A (en) * | 2020-11-05 | 2021-01-22 | 北京一亚高科能源科技有限公司 | Overhead feeding TFB gasification furnace |
-
2015
- 2015-10-09 CN CN201520778920.6U patent/CN205011715U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176593A (en) * | 2015-10-09 | 2015-12-23 | 廊坊德基机械科技有限公司 | Anti-coking control system and method for coal gasifier of entrained-flow bed |
| CN112251259A (en) * | 2020-11-05 | 2021-01-22 | 北京一亚高科能源科技有限公司 | Cylindrical gasification furnace |
| CN112251260A (en) * | 2020-11-05 | 2021-01-22 | 北京一亚高科能源科技有限公司 | Overhead feeding TFB gasification furnace |
| CN112251259B (en) * | 2020-11-05 | 2022-06-10 | 北京一亚高科能源科技有限公司 | Cylindrical gasification furnace |
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