Technique and device for removing dust of coke oven by boiler system

A smoke and dust removal technology, applied in coking ovens, smoke and dust removal, petroleum industry, etc., can solve the problems of furnace body deformation, inability to discharge raw gas, capture and dispose of smoke and dust, and high operating costs, so as to reduce size and weight , Good smoke and dust removal effect, high smoke and dust collection rate

Inactive Publication Date: 2008-09-10
SHANXI FAXIN GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term operation on the top of the furnace may easily cause deformation of the furnace body
Seriously affect the service life of the coke oven body
[0007] 2) The processing capacity is limited, and it is not possible to capture and dispose of all the waste gas and smoke, so that when coal is loaded or coke is pushed, the air is often accompanied by smoke particles, polluting the environment
[0008] 3) It can only be used for dust removal treatment, but cannot control the sulfur content
[0012] 1) Large area, about 800-1000m2
[0013] 2) Due to the loss of air volume, the ground station has a large load
The installed capacity is large and the operating cost is high. The operating cost per ton of coke is 2.5-4 yuan, which increases the production cost
[0014] 3) The above reasons lead to high project cost. Taking a coke oven with an annual output of 600,000 tons as an example, it needs to invest 13-18 million yuan
And the construction period is long, generally 6-8 months

Method used

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  • Technique and device for removing dust of coke oven by boiler system
  • Technique and device for removing dust of coke oven by boiler system
  • Technique and device for removing dust of coke oven by boiler system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The body bracket 1 of the furnace top smoke and dust collection vehicle is equipped with a traveling steel wheel 2 and a motor 3. A combustion chamber 10 and a mixer 18 are installed on the bracket 1. There is a furnace mouth suction pipe 4 on both sides of the lower part of the combustion chamber 10, and a furnace mouth suction pipe 4 There is a telescopic sleeve 5 at the lower end of the furnace mouth, and a gas automatic ignition nozzle 7 and an adjustable damper 6 are installed at the lower end of the combustion chamber 10. There is a combustion exhaust gas outlet pipe 11 on the upper side of the combustion chamber 10, which communicates with the mixer 18, and the combustion exhaust gas outlet pipe 11 is equipped with an automatic turning plate 13 for the combustion chamber; the upper part of the mixer 18 has a telescopic sleeve 16 for the coke-stopping car and a sleeve 8 for collecting and distributing air at the furnace door on the side of the machine. plate 15. T...

Embodiment 2

[0066] During the coking process, the intermittent smoke and dust generated above the furnace door frame are gathered in the dust collection hood of the coke pick-up truck under the action of thermal buoyancy and the suction of the fan, and the mixing temperature of the smoke and air is 170°C.

[0067] During the coal charging process, the 650°C high-temperature combustible waste gas from the coke oven carbonization chamber enters the combustion chamber, and the air volume is adjusted to control the temperature of the combustion chamber to 875°C to completely burn the combustible waste gas, and the exhaust gas after combustion is collected from the coke oven door. The flue gas and distribution air enter the mixer for mixing, and the temperature of the mixed flue gas is 220°C.

[0068] After the dust gas in the gas-collecting pipeline is separated by the cyclone separator, it enters the boiler through the blower, and is fully burned under the conditions of a temperature of 1025 ...

Embodiment 3

[0070] During the process of coking, the fumes generated intermittently and above the furnace door frame are collected in the coke evacuation hood under the action of thermal buoyancy and the suction of the fan, and the mixing temperature of the dust and air is 180°C.

[0071] During the coal charging process, the 700°C high-temperature combustible waste gas from the coke oven carbonization chamber enters the combustion chamber, and the air volume is adjusted to control the temperature of the combustion chamber to 900°C to completely burn the combustible waste gas, and the exhaust gas after combustion is collected from the coke oven door. The flue gas and distribution air enter the mixer for mixing, and the temperature of the mixed flue gas is 230°C.

[0072] After the dust gas in the gas-collecting pipeline is separated by the cyclone separator, it enters the boiler through the blower, and is fully burned under the conditions of a temperature of 1050 ° C and an air excess coef...

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Abstract

The invention relates to a technology and equipment which utilize a boiler system to eliminate fume and dust from a coking oven. A movable dust-collecting vehicle is arranged on the top of the coking oven to collect the fume and dust escaping during the process of coke collecting and coal feeding, and the fume and the dust undergo primary burning in a combustion chamber, the coke foam is separated and then led inside the boiler for sufficient combustion, which not only utilizes the heat energy but also achieves profound dust-elimination and desulfurization for the fume through the configuration facilities of the boiler so as to accomplish the aim of clean discharge. The technology provided by the invention is characterized in simple operation, investment reducing, no occupation of area, and good effect in smoke-removing and dust-elimination, which conforms to national 2nd standard of discharging. The invention can replace the ground dust extract station. In order to implement the fume collection described in the technology, the specific dust-collecting vehicle is designed. The invention is suitable for the factory with an established complete boiler system to carry out the operation of smoke-removing and dust-elimination.

Description

technical field [0001] The invention relates to a process and a device for eliminating smoke and dust in a coke oven by using a boiler system. technical background [0002] During the coal charging and coke discharge period of the coke oven, the smoke and dust pollution is relatively large. The main features are dispersion, large amount of smoke and dust, coexistence of continuity and paroxysm, high temperature, open flame, and difficult treatment. At present, the main environmental protection measures include furnace top smoke elimination and dust removal vehicles and ground dust removal stations: [0003] 1. Furnace top smoke elimination and dust removal vehicle: [0004] Furnace top smoke elimination and dust removal vehicle is characterized in that it combines flue gas combustion, washing, water removal, dust removal and induced draft fan, and the top-loading coke oven is combined with the coal charging machine into one car; The furnace is independently combined into ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B45/00B08B15/00
Inventor 张振明何小刚刘新文
Owner SHANXI FAXIN GROUP
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