Treatment system and process suitable for outlet coke gas of dry quenching
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A technology of treatment system and treatment process, which is applied in the field of waste gas treatment, can solve the problems of substandard purification effect, weak treatment process, incomplete export, purification and utilization process, etc.
Active Publication Date: 2021-07-06
SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
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The mature flue gas dedusting, desulfurization and denitrification process can indeed have a good treatment effect on CDQ exhaust gas, but problems such as investment, land occupation, and difficulty in operation also prevent it from being widely used
[0004] Analyzing the existing technology, the disadvantages can be sorted out as foll...
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preparation example Construction
[0035] The VOC S The preparation method of absorbent is as follows:
[0036] 1) Add ethanol into the beaker, and heat it to 30-60°C with a water bath with a built-in stirring function, add sodium benzoate, continue to add ethanol while stirring until the sodium benzoate is completely dissolved, and record it as solution A;
[0037] 2) After fully stirring cold methanol, butanediol, diethylhydroxylamine and liquid paraffin, add solution A while stirring at a speed of 0.1-3g / min to obtain solution B, the viscosity of solution B is 2000-3000cP;
[0038]3) Stir and heat solution B to 60-70°C, then add washing oil, add polysorbate-80 and solubilizer while continuing to stir, and when the viscosity of the mixed solution reaches 10-50cP, VOC S Absorbent preparation is complete.
[0039] A treatment process suitable for coke gas from CDQ. The process adopts a treatment system suitable for coke gas from CDQ. The process is as follows:
[0040] 1) Utilize the axial flow fan 2 to send...
Embodiment 1
[0048] A treatment process suitable for CDQ coke output coke gas, the specific implementation is as follows:
[0049] The conveyor belt, the scraper machine, the tail bin, and the coke discharge box are all sealed into an integral bin body 1 . An axial fan 2 is arranged around the bottom of the warehouse body 1, and the exhaust gas is sent to the exhaust gas collection main pipe 3 by the fan. The waste gas collection main pipe 3 is connected with the push flow type folded plate dust interception box 5, and the push flow type folded plate dust interception box 5 is equipped with multi-layer folded plates 4, the distance between the folded plates is 1000mm, and the folded plates 4 are filled with tar dry residue, gas VOC is ejected while flowing into the plug-flow folded plate dust collection box 5 S The absorbent atomizes the liquid to make coke powder and dry residue stick together. When the gas flow rate dropped to 8m / s, the mixture was taken out, and the solid and liquid p...
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Abstract
Provided are a treatment system and process suitable for outlet coke gas of dry quenching. The treatment system comprises a bin body, a collecting header pipe, a plug-flow type folded plate dust intercepting box, an absorption liquid pool and a top-spin ridge liquid removing pipe. A dry quenching conveying belt, a scraper, a machine tail stock bin and a coke discharging box are all sealed in the whole bin body, an axial flow fan is arranged at the bottom of the bin body, the axial flow fan leads outlet coke gas in the bin body to the collecting header pipe through a pipeline, the collecting header pipe is connected with the plug-flow type folded plate dust intercepting box, a waste gas outlet of the plug-flow type folded plate dust intercepting box is connected with an aeration disc at the bottom of the absorption liquid pool, and an outlet in the upper end of the absorption liquid pool is connected with an inlet in the bottom of the top-spin ridge liquid removing pipe. Tar dry residues fill the gaps between folded plates in the plug-flow type folded plate dust intercepting box. A VOCS absorbent is loaded in the absorption liquid pool. The treatment modes for tar and various types of coke quenching waste gas in the coking, metallurgy and coal industries are optimized and integrated, coke powder and circulating gas are recovered while the purification effect is ensured, and the system has the advantages of small investment, small occupied area, simplicity in operation and the like.
Description
technical field [0001] The invention belongs to the field of waste gas treatment, and is applied to the treatment of CDQ coke discharge in coking, metallurgy and coal industries; in particular, it relates to a treatment system and process suitable for CDQ discharge coke gas. Background technique [0002] CDQ uses inert gas as the circulating gas to exchange heat with hot coke in the CDQ furnace to cool the coke temperature from 1000°C to below 250°C to achieve the purpose of coke quenching. During the CDQ process, most of the exhaust gas is discharged in an organized manner through the dust removal and desulfurization system, and some unorganized exhaust gas is released from the bottom of the coke discharge box, coke discharge chute, belt transfer and other discharge focus pollution sources (coke discharge gas) to the environment, the main components of this part of the waste gas are gas, steam and a large amount of coke powder (50g / m 3 ), due to nitrogen blanketing, the co...
Claims
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Application Information
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