A dust removal process for coal-to-gas process gas
A process gas and coal-to-gas technology, which is applied in gas dust removal, gasification process, and production of combustible gas, etc. It can solve the problems of dust accumulation in heat exchangers, small dust particle size, and heavy workload.
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Embodiment 1
[0028] The process gas generated after the combustion reaction flows out of the gasifier 3 after being washed by the bottom water layer. The dust content of crude process gas 4 is 200g / m 3 , first enters the first-stage Venturi scrubber 5, fully contacts and mixes with the atomized washing water flowing out of the atomizing nozzle in the scrubber, and then flows into the water separation tank 9, after the washing effect of the water layer at the bottom of the tank, the condensed water-containing dust particles are washed by a large amount Removal, the dust content of the process gas 23 after the water separation tank is reduced to 2g / m 3. Then it is sent to the secondary Venturi dust collector 13, and the remaining small particle dust in the gas is first wetted by the atomized spray water 12, and collides with the sprayed adsorbent 11 for adsorption. The gas enters the cyclone separator 15 together with the adsorbent particles. After cyclone separation, the adsorbent partic...
Embodiment 2
[0035] The process gas generated after the combustion reaction flows out of the gasifier 3 after being washed by the bottom water layer. The dust content of crude process gas 4 is 300g / m 3 , first enters the first-stage Venturi scrubber 5, fully contacts and mixes with the atomized washing water flowing out of the atomizing nozzle in the scrubber, and then flows into the water separation tank 9, after the washing effect of the water layer at the bottom of the tank, the condensed water-containing dust particles are washed by a large amount Removal, the dust content of the process gas 23 after the water separation tank is reduced to 4g / m 3 . Then it is sent to the secondary Venturi dust collector 13, and the remaining small particle dust in the gas is first wetted by the atomized spray water 12, and collides with the sprayed adsorbent 11 for adsorption. The gas enters the cyclone separator 15 together with the adsorbent particles. After cyclone separation, the adsorbent parti...
Embodiment 3
[0042] The process gas generated after the combustion reaction flows out of the gasifier 3 after being washed by the bottom water layer. The dust content of crude process gas 4 is 300g / m 3 , first enters the first-stage Venturi scrubber 5, fully contacts and mixes with the atomized washing water flowing out of the atomizing nozzle in the scrubber, and then flows into the water separation tank 9, after the washing effect of the water layer at the bottom of the tank, the condensed water-containing dust particles are washed by a large amount Removal, the dust content of the process gas 23 after the water separation tank is reduced to 4g / m 3 . Then it is sent to the secondary Venturi dust collector 13, and the remaining small particle dust in the gas is first wetted by the atomized spray water 12, and collides with the sprayed adsorbent 11 for adsorption. The gas enters the cyclone separator 15 together with the adsorbent particles. After cyclone separation, the adsorbent parti...
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