Double-carbonization-chamber test coke oven device

Abstract

The utility model relates to a device for a coal blending experiment of a coking enterprise, in particular to a double-carbonization chamber test coke oven device. A double-carbonization-chamber test coke oven device comprises a small coke oven, silicon carbide rods are matched in the small coke oven, carbonization chambers of the small coke oven are connected with an incinerator through smoke pipes on the upper portions of the carbonization chambers, stop valves are arranged in the smoke pipes, the incinerator is connected with a purification device through a pipeline, the purification device is connected with a purification fan through a pipeline, and an air outlet of the purification fan is connected with a chimney. Blended coal cakes are loaded into a small coke oven carbonization chamber to be tested, raw coke oven gas generated in the coal blending test is guided into an incinerator through a smoke pipe on the upper portion of the carbonization chamber, waste gas generated after incineration is purified through a purification device to reach the standard and then discharged into a chimney, and the overall power of the waste gas comes from a purification fan behind the purification device. The test coke oven system disclosed by the utility model adopts the small coke oven for testing, so that the requirement of coal blending proportion adjustment of coking enterprises can be met; and other waste substances are not generated in the test process, and the whole is environment-friendly and efficient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for coal blending experiment of coking enterprise, concretely to a double carbonization chamber test coke oven device. BACKGROUND

[0002] In modern coking enterprise production, the adjustment of coal blending ratio is very frequent, and the role of coal blending is mainly to reasonably use low-quality low-price coal to reduce the cost of blended coal, save high-quality main coking coal which is in short supply of resources, improve coke quality, ensure safe and efficient production of coking, and avoid accidents. Coking enterprises generally use iron box test to adjust the coal blending ratio, and the iron box test is to directly place the iron box in the coke carbonization chamber of the industrial coke oven, and the test is carried out at the same time as the industrial coke oven production. However, due to the long production time of the industrial coke oven, the coal blending test also takes a long time. At present, the coke production enterprises adjust the coal blending cost more frequently, and the test frequency of the coal blending test is further improved. The iron box test cannot meet the high-frequency requirement of the coal blending test of the coke production enterprise. SUMMARY

[0003] The utility model discloses in order to solve the problem of long time and low frequency of iron box coal blending test, provides a double carbonization chamber test coke oven device.

[0004] The utility model discloses the following technical scheme is adopted: a double carbonization chamber test coke oven device, including small coke oven, the carbonization chamber furnace wall of small coke oven is also matched with silicon carbon rod, the carbonization chamber of small coke oven is connected incinerator through the flue of its upper portion, the flue is provided with cut -off valve in, incinerator is connected purification device through pipeline, purification device is connected purification fan through pipeline, and the air outlet of purification fan is connected chimney.

[0005] The coal briquette of coal blending is loaded into the carbonization chamber of small coke oven to carry out the test, and the raw gas generated in the coal blending test is introduced into the incinerator through the flue in the upper portion of the carbonization chamber. After incineration, the exhaust gas is discharged to the chimney after purification by the purification device. The power source of the exhaust gas as a whole is the purification fan after the purification device. The purification fan is provided with a frequency converter, which can adjust the working frequency of the fan according to the amount of combustion gas generated in the incinerator, so as to control the pressure in the incinerator and ensure complete combustion of the coal gas.

[0006] The double carbonization chamber test coke oven device described above, the first carbonization chamber of small coke oven is connected incinerator through the flue of its upper portion, the flue is provided with first cut -off valve in, the second carbonization chamber of small coke oven is connected incinerator through the flue of its upper portion, the flue is provided with second cut -off valve in. The carbonization chamber can be tested alone, or double furnace test can be carried out.

[0007] The double carbonization chamber test coke oven device has a PP wire screen demister arranged in the purification device, and the bottom of the PP wire screen demuster is connected with a atomizing nozzle.

[0008] The test coke oven device adopts a double-furnace carbonization chamber small coke oven to perform the test, can meet the demand of frequent adjustment of the coal blending ratio of the coking enterprise, and does not generate other waste materials in the test process, and is overall environmentally friendly and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a structural schematic view of the utility model.

[0010] In the figure, 1 is a small coke oven, 2 is a first shut-off valve, 3 is a second shut-off valve, 4 is a flue, 5 is a silicon-carbon rod, 6 is an incinerator, 7 is a chimney, 8 is a purification device, 9 is a heating control system, 10 is a purification fan, 11 is a PP wire screen demister, and 12 is an atomizing nozzle. DETAILED DESCRIPTION

[0011] The double carbonization chamber test coke oven device comprises a small coke oven 1, the small coke oven 1 has double carbonization chambers, each carbonization chamber is bottom-loaded and bottom-discharged, and a silicon-carbon rod 5 is additionally arranged in the furnace wall of the carbonization chamber of the small coke oven 1; the first carbonization chamber of the small coke oven 1 is connected with an incinerator 6 through a flue 4 arranged at the upper portion of the first carbonization chamber, and a first shut-off valve 2 is arranged in the flue; the second carbonization chamber of the small coke oven 1 is connected with the incinerator 6 through a flue 4 arranged at the upper portion of the second carbonization chamber, and a second shut-off valve 3 is arranged in the flue; the incinerator 6 is connected with a purification device 8 through a pipeline; the purification device 8 is connected with a purification fan 10 through a pipeline; and the air outlet of the purification fan 10 is connected with a chimney 7.

[0012] In example one, when 1# single coal test is performed, the 2# shut-off valve is closed, the silicon-carbon rods 5 on both sides of the 1# carbonization chamber are simultaneously preheated to 800 DEG C, the coal cake is loaded into the 1# carbonization chamber, the furnace wall of the 1# carbonization chamber is heated to 1050 DEG C at a heating rate of 0.5 DEG C / min, and then the temperature is kept constant for 8 hours; after the coking is completed, the coke is pushed out by a forklift; the raw coal gas generated in the coking process is introduced into the incinerator 6 through the flue 4 arranged at the upper portion of the 1# carbonization chamber, the waste gas generated after incineration is absorbed by the atomizing nozzle of the purification device to absorb H2S and SO2 in the waste gas, and then the waste gas is discharged to the roof chimney 7 after reaching the standard; and the overall power source is the variable frequency purification fan after the purification device.

[0013] Example two: when the double furnace test, 1# carbonization chamber, 2# carbonization chamber furnace wall are preheated to 800 DEG C, two kinds of coal briquettes are loaded into 1# carbonization chamber, 2# carbonization chamber at the same time, the top cut-off valve of carbonization chamber is fully opened, the frequency conversion purification fan is adjusted to the double furnace pressure state, 1# carbonization chamber, 2# carbonization chamber furnace wall are heated to 1050 DEG C at the heating rate of 0.5 DEG C / min, then constant temperature is kept for 8h, after coking is finished, two furnaces of coke are pushed out by forklift respectively. The raw gas generated in the coking process is introduced into the incinerator 6 through the smoke pipe 4 in the upper part of the carbonization chamber, after incineration, the waste gas is sprayed with circulating lime water in the purification device to absorb H2S and SO2 in the waste gas, then it is discharged to the roof chimney 7 up to standard. The overall power source is the frequency conversion purification fan after the purification device.

[0014] The circulating lime water is sprayed in the purification device by the PP wire mesh demister 11, the high-atomized lime water can effectively contact and absorb H2S and SO2 in the waste gas, ensuring the removal effect of the waste gas, no other waste materials are generated in the test process, the flue gas discharged from the chimney is colorless and odorless, the whole is environmentally friendly and efficient, and can meet the demand of the coal blending ratio adjustment of the coking enterprise.

[0015] The composition of the raw gas generated in the carbonization chamber is mainly H2, CH4, CO, H2S and SO2, H2, CH4 and CO are fully combusted in the incinerator 6, the reaction equation is: 2H2+O2→2H2O+heat, CH4+202→CO2+2H2O+heat, 2CO+O2→2CO2+heat; H2S and SO2 are absorbed in the purification device 8, the reaction equation is: SO2+Ca++2OH-=CaSO3↓+H2O, Ca(OH)2+H2S=CaS+2H2O.

[0016] The current coke market price continues to fall, and the coking enterprises adjust the coal blending cost frequently, so the test frequency of the coal blending test is further improved. The test coke oven system of the utility model can meet the test frequency of 2 times of small coke oven per day; meanwhile, it can be operated separately, and each performs single furnace coking test, meeting the demand of the current coal blending test. The system is mainly tested by using 40kg small coke oven, the coke oven as a whole adopts the bottom loading and bottom discharging mode, and shares a set of coal loading and coke discharging forklift. The silicon-carbon rod 5 matched with the small coke oven 1 is connected with the external heating control system 9.

Claims

1. A dual carbonization chamber test coke oven apparatus characterized by: It includes small coke oven (1), small coke oven (1) is equipped with silicon carbon rod (5) in it, the carbonization chamber of small coke oven (1) is connected with incinerator (6) through the smoke pipe on its upper part, the smoke pipe is provided with a cut-off valve, the incinerator (6) is connected with purification device (8) through pipeline, the purification device (8) is connected with purification fan (10) through pipeline, the air outlet of purification fan (10) is connected with chimney (7).

2. A dual carbonization chamber test coke oven apparatus as defined in claim 1, characterized in that: Small coke oven (1) has double carbonization chambers, the first carbonization chamber of small coke oven (1) is connected with incinerator (6) through the smoke pipe on its upper part, the smoke pipe is provided with first cut-off valve (2), the second carbonization chamber of small coke oven (2) is connected with incinerator (6) through the smoke pipe on its upper part, the smoke pipe is provided with second cut-off valve (3).

3. A dual carbonization chamber test coke oven installation according to claim 1 or 2, characterized in that: The inside of purification device (8) is provided with PP wire mesh demister (11), the bottom of PP wire mesh demister (11) is connected with atomizing nozzle (12).

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