CN110184090A - Desulfurizer and method in a kind of coal boiler - Google Patents
Desulfurizer and method in a kind of coal boiler Download PDFInfo
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- CN110184090A CN110184090A CN201910367947.9A CN201910367947A CN110184090A CN 110184090 A CN110184090 A CN 110184090A CN 201910367947 A CN201910367947 A CN 201910367947A CN 110184090 A CN110184090 A CN 110184090A
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- Prior art keywords
- boiler
- coal
- cyclone separator
- dust
- heat exchanger
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/80—Other features with arrangements for preheating the blast or the water vapour
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0956—Air or oxygen enriched air
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0983—Additives
- C10J2300/0996—Calcium-containing inorganic materials, e.g. lime
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
-
- 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
Abstract
The invention discloses desulfurizer and methods in a kind of coal boiler, including boiler, screw feeder, dust pelletizing system, cyclone dust collectors and drum, the boiler erection has screw feeder, the dust pelletizing system includes cyclone separator, material returning device and heat exchanger, the input terminal of the cyclone separator is connected to boiler, material returning device is fixedly connected between the cyclone separator and boiler, the output end of the cyclone separator is fixedly connected with the input terminal of heat exchanger, the output end of the heat exchanger is fixedly connected with cyclone dust collectors, the present invention has strong applicability, output gas stabilization is high, the features such as thermal efficiency is high, by the way that agstone is added in fine coal, high-efficiency desulfurization can be achieved, reduce environmental pollution, coal dust enters boiler combustion, the raw gas of generation is through separator, heat exchanger, it is discharged after cyclone dust collectors, it can meet Emission request reduces dust pollution, and coal price is higher, and the price of coal dust is relatively low, has saved cost.
Description
Technical field
The invention discloses desulfurizer and methods in a kind of coal boiler, belong to boiler in-furnace desulfurization technical field.
Background technique
With economic development, China increases the dynamics of boiler energy-saving and contamination control work, by implementing reducing energy consumption
Engineering, pollution comprehensive improvement push efficiency to mark, Mg-GIK Polarized liquid law enforcement, reinforce the work such as capacity building, achieve actively at
Effect, but there are still some problems, and it is important pollution sources that coal-burned industrial boiler pollutants emission intensity is larger, discharges flue dust, two in year
Sulfur oxide, nitrogen oxides account for about 33%, 27%, the 9% of national total emission volumn respectively, and in recent years, China occurs a wide range of, long
Time serious haze weather, with closely related, coal-burning boiler desulfurization the characteristics of coal-burned industrial boiler region high intensity, low-altitude discharged
Technology is most important for improving environment.
Summary of the invention
The technical problem to be solved in the present invention provides desulfurizer and method in a kind of coal boiler, thus on solving
State problem.
To achieve the above object, the invention provides the following technical scheme: desulfurizer in a kind of coal boiler, including pot
Furnace, screw feeder, dust pelletizing system, cyclone dust collectors and drum, the boiler erection have screw feeder, the dust pelletizing system
Including cyclone separator, material returning device and heat exchanger, the input terminal of the cyclone separator is connected to boiler, the cyclone separator
Material returning device is fixedly connected between boiler, the output end of the cyclone separator is fixedly connected with the input terminal of heat exchanger, institute
The output end for stating heat exchanger is fixedly connected with cyclone dust collectors, and the heat exchanger is communicated with drum by pipeline.
Preferably, the screw feeder is fixedly mounted on the lower part of boiler, the output end of the cyclone separator is solid
Surely it is connected to the top of boiler.
Preferably, the waste port of the cyclone separator is fixedly connected with material returning device, the other end of the material returning device with
Boiler connection.
Preferably, the transmission material in fuel and screw feeder in the boiler is coal dust, and blending in coal dust
There is agstone.
Preferably, the bottom side of the boiler is equipped with inflatable mouth, the bottom end of the boiler is equipped with storage ash sealing pond.
Sulfur method in a kind of coal boiler, including following preparation step:
(1) 0~10mm fine coal is transported to coal scuttle by conveying device, is sent into gasification furnace by screw feeder；
(2) gasifying agent vapor and air mixture enter gasification furnace from the inflatable mouth of boiler, with speed appropriate by powder
Coal is blown afloat；
(3) it is outstanding in boiling under the material and gasifying agent collective effect of high temperature after fine coal enters burner hearth emulsion zone lower part
Combustion gasification under floating state, boiler bottom ash fall to storage ash sealing pond through ash releasing tube；
(4) heating gas that cyclone separator is isolated, be cooled to DEG C through heat exchanger or so, it is re-fed into efficient cyclone dedusting
Device, hot steam enter drum.
Compared with prior art, beneficial effects of the present invention are as follows:
The present invention has the characteristics that strong applicability, output gas stabilization is high, the thermal efficiency is high, by the way that stone is added in fine coal
Limestone flour reduces environmental pollution, it can be achieved that high-efficiency desulfurization, and coal dust enters boiler combustion, the raw gas of generation through separator, change
It is discharged after hot device, cyclone dust collectors, emission request can be met, reduce dust pollution, and coal price is higher, the price of coal dust is opposite
It is lower, save cost.
Detailed description of the invention
Fig. 1 is process flow chart of the invention；
Fig. 2 is gas transport flow chart of the invention.
In figure: 1- boiler, 2- screw feeder, 3- dust pelletizing system, 31- cyclone separator, 32- material returning device, 33- heat exchange
Device, 4- cyclone dust collectors, 5- drum.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
As shown in Figs. 1-2, desulfurizer in a kind of coal boiler, including boiler 1, screw feeder 2, dust pelletizing system 3,
Cyclone dust collectors 4 and drum 5, the boiler 1 are equipped with screw feeder 2, the dust pelletizing system 3 include cyclone separator 31,
The input terminal of material returning device 32 and heat exchanger 33, the cyclone separator 31 is connected to boiler 1, the cyclone separator 31 and boiler
Material returning device 32 is fixedly connected between 1, the output end of the cyclone separator 31 is fixedly connected with the input terminal of heat exchanger 33, institute
The output end for stating heat exchanger 33 is fixedly connected with cyclone dust collectors 4, and the heat exchanger 33 is communicated with drum 5 by pipeline.
Wherein, the screw feeder 2 is fixedly mounted on the lower part of boiler 1, and the output end of the cyclone separator 31 is solid
Surely it is connected to the top of boiler 1.
Wherein, the waste port of the cyclone separator 31 is fixedly connected with material returning device 32, the other end of the material returning device 32
It is connect with boiler 1.
Wherein, the transmission material in the fuel and screw feeder 2 in the boiler 1 is coal dust, and is blended in coal dust
Agstone.
Wherein, the bottom side of the boiler 1 is equipped with inflatable mouth, and the bottom end of the boiler 1 is equipped with storage ash sealing pond.
Sulfur method in a kind of coal boiler, including following preparation step:
(1) 0~10mm fine coal is transported to coal scuttle by conveying device, is sent into gasification furnace by screw feeder 2, in coal gas
Sulphur, exist in the form of hydrogen sulfide, by fine coal be added agstone, it can be achieved that high-efficiency desulfurization, chemical equation are as follows:
CaCO3=CaO+CO2 CaO+H2S=aS+H2O CaCO3+H2S=CaS+H2O+CO2 (experiment shows: at 800 DEG C, calcium sulfur ratio
Under conditions of 2, desulfuration efficiency is more than that 90%), compared with fixed bed gasifier, fixed bed gasifier is fuel using lump coal,
And have higher requirements to coal quality, coal price is higher, and coal price is high compared with fine coal by 30%~40%, and spending is effectively saved using coal dust；
(2) gasifying agent vapor and air mixture enter gasification furnace from the inflatable mouth of boiler 1, with speed appropriate by powder
Coal is blown afloat, and during fine coal is blown afloat, coal gas of high temperature carrying does not burn coal grain and flies evolution roof of the furnace, by cyclone separator 31
It isolates and does not burn coal grain, 1 bottom of boiler is sent back to by material returning device 32, be again introduced into the gasification of burner hearth circulating combustion；
(3) it is outstanding in boiling under the material and gasifying agent collective effect of high temperature after fine coal enters burner hearth emulsion zone lower part
Combustion gasification under floating state, 1 bottom ash of boiler fall to storage ash sealing pond through ash releasing tube, and when burning, height not only may be implemented
Desulfurization, and the nitrogen oxides that fuel combustion generates are imitated, is divided into two kinds of fuel type, temperature mode, gasifying agent oxygen-supplying amount is low, in gasification furnace
Total coefficient of excess air is less than 0.5, then fuel NO is almost nil；About 800~900 DEG C of gasification, and combustion temperature, burning
Temperature is far below 1500 DEG C, therefore temperature mode formation of nitrogen oxides is few, in gas fired-boiler 1, coal gas category diffusion combustion, and combustion
About 1000~1100 DEG C of temperature are burnt, is also lower than 1500 DEG C, therefore, in the burning link of boiler 1, formation of nitrogen oxides is also few,
Compared with fixed bed gasifier, this method uses the normal pressure fluidized bed gas burner, and the normal pressure fluidized bed coal gas heater outlet temperature is high by about 800
~900 DEG C, phenols, tar, cyanogen substance are completely broken down burning；In terms of desulfurization, compared with chain furnace tail flue gas desulfurization process
More easily, cost is lower；In terms of controlling nitrogen oxides, " the normal pressure fluidized bed gas burner+gas fired-boiler " system than chain-grate boiler,
It is few that pulverized-coal fired boiler and circulating fluidized bed boiler generate amount of nitrogen oxides, and is not necessarily to end denitration process；
(4) heating gas that cyclone separator 31 is isolated is cooled to 200 DEG C or so through heat exchanger 33, is re-fed into efficient rotary
Wind deduster 4 after further decreasing dust content of gas, is sent to the use of boiler 1, and hot steam enters drum 5, generates in heat exchanger 33
Steam, partially can be used for the use of gas burner gasifying agent, part is outer for producing for enterprise.
Specifically, the present invention has the characteristics that strong applicability, output gas stabilization is high, the thermal efficiency is high, by fine coal
Interior addition agstone reduces environmental pollution, it can be achieved that high-efficiency desulfurization, and coal dust enters boiler combustion, the raw gas warp of generation
It is discharged after separator, heat exchanger, cyclone dust collectors, emission request can be met, reduce dust pollution, and coal price is higher, coal dust
Price it is relatively low, saved cost.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. desulfurizer in a kind of coal boiler, including boiler (1), screw feeder (2), dust pelletizing system (3), cyclone dust removal
Device (4) and drum (5), which is characterized in that the boiler (1) is equipped with screw feeder (2), and the dust pelletizing system (3) includes
Cyclone separator (31), material returning device (32) and heat exchanger (33), the input terminal of the cyclone separator (31) and boiler (1) are even
It is logical, be fixedly connected with material returning device (32) between the cyclone separator (31) and boiler (1), the cyclone separator (31) it is defeated
Outlet is fixedly connected with the input terminal of heat exchanger (33), the output end of the heat exchanger (33) and cyclone dust collectors (4) fixed company
It connects, the heat exchanger (33) is communicated with drum (5) by pipeline.
2. desulfurizer in a kind of coal boiler according to claim 1, which is characterized in that the screw feeder
(2) it is fixedly mounted on the lower part of boiler (1), the output end of the cyclone separator (31) is fixedly connected on the top of boiler (1).
3. desulfurizer in a kind of coal boiler according to claim 1, which is characterized in that the cyclone separator
(31) waste port is fixedly connected with material returning device (32), and the other end of the material returning device (32) is connect with boiler (1).
4. desulfurizer in a kind of coal boiler according to claim 1, which is characterized in that in the boiler (1)
Transmission material in fuel and screw feeder (2) is coal dust, and agstone is blended in coal dust.
5. desulfurizer in a kind of coal boiler according to claim 1, which is characterized in that the bottom of the boiler (1)
Portion side is equipped with inflatable mouth, and the bottom end of the boiler (1) is equipped with storage ash sealing pond.
6. sulfur method in a kind of coal boiler, which is characterized in that including following preparation step:
(1) 0~10mm fine coal is transported to coal scuttle by conveying device, is sent into gasification furnace by screw feeder (2)；
(2) gasifying agent (vapor and air mixture) enters gasification furnace from the inflatable mouth of boiler (1), with speed appropriate by powder
Coal is blown afloat；
(3) after fine coal enters burner hearth emulsion zone lower part, under the material and gasifying agent collective effect of high temperature, in boiling suspension
Combustion gasification under state, boiler (1) bottom ash fall to storage ash sealing pond through ash releasing tube；
(4) heating gas that cyclone separator (31) is isolated is cooled to 200 DEG C or so through heat exchanger (33), is re-fed into efficient rotary
Wind deduster (4), hot steam enter drum (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910367947.9A CN110184090A (en) | 2019-05-05 | 2019-05-05 | Desulfurizer and method in a kind of coal boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910367947.9A CN110184090A (en) | 2019-05-05 | 2019-05-05 | Desulfurizer and method in a kind of coal boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110184090A true CN110184090A (en) | 2019-08-30 |
Family
ID=67715638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910367947.9A Pending CN110184090A (en) | 2019-05-05 | 2019-05-05 | Desulfurizer and method in a kind of coal boiler |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900077A (en) * | 2014-03-24 | 2014-07-02 | 中国华能集团清洁能源技术研究院有限公司 | Integrated modification method for reducing pollutant emission of circulating fluidized bed boiler |
| CN105698163A (en) * | 2016-01-27 | 2016-06-22 | 华北电力大学 | Oxygen-enriched combustion device and method of solid fuel circulating fluidized bed |
| CN108753368A (en) * | 2018-07-31 | 2018-11-06 | 安徽科达洁能股份有限公司 | A kind of circulation fluidized bed coal gasifying system and method |
| CN109340743A (en) * | 2018-09-29 | 2019-02-15 | 上海晓清环保科技有限公司 | A kind of duff grain circulating fluidized bed boiler |
-
2019
- 2019-05-05 CN CN201910367947.9A patent/CN110184090A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900077A (en) * | 2014-03-24 | 2014-07-02 | 中国华能集团清洁能源技术研究院有限公司 | Integrated modification method for reducing pollutant emission of circulating fluidized bed boiler |
| CN105698163A (en) * | 2016-01-27 | 2016-06-22 | 华北电力大学 | Oxygen-enriched combustion device and method of solid fuel circulating fluidized bed |
| CN108753368A (en) * | 2018-07-31 | 2018-11-06 | 安徽科达洁能股份有限公司 | A kind of circulation fluidized bed coal gasifying system and method |
| CN109340743A (en) * | 2018-09-29 | 2019-02-15 | 上海晓清环保科技有限公司 | A kind of duff grain circulating fluidized bed boiler |
Non-Patent Citations (1)
| Title |
|---|
| 中国石油天然气集团公司人事服务中心: "《锅炉运行值班员》", 30 April 2007, 中国石油大学出版社 * |
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Application publication date: 20190830 |