35results about How to "Reduce dust removal load" patented technology

The invention discloses a coal gasifier for slag granulation and a coal gas preparation process. The coal gasifier is mainly composed of a pressure-bearing housing, a slag film gasification device, an annular chamber structure slag basin, a quenching chamber, a conduit, a convection cooling section and the like. The process comprises the following steps: with pulverized dry coal or coal water slurry as a raw material, feeding the raw material to a gasification chamber to burn and gasify together with a gasifying agent from a vortex gasification burner; enabling formed liquid slag to collide with the wall surface of the gasification chamber under the vortex action, and flowing from bottom to top under the action of gravity; feeding to the slag basin of the annular chamber structure, carrying out further gasification reaction together with oxygen fed from the upper part of the slag basin, and discharging from a slag discharge hole; feeding coal gas main airflow to the quenching chamber together with liquid drops, cooling to a specific temperature, and then conveying to the convection cooling section to further lower temperature through the conduit; finally removing dust, purifying and then outputting. The liquid slag drops penetrating through the slag basin are cooled to form solid particles and are collected by a dry slag collector; and the heat is recovered by a slag cooler.

The invention relates to a radiation pyrolytic tube and a pulverized coal pyrolytic rotary furnace. The radiation pyrolytic tube comprises three radiation tubes which are sequentially connected, namely a first radiation tube, a second radiation tube and a third radiation tube, wherein a fuel gas nozzle and an igniter are arranged inside the second radiation tube; the pulverized coal pyrolytic rotary furnace comprises a rotary furnace body, wherein a plurality of radiation pyrolytic tubes are arranged inside the furnace body. By adopting the pulverized coal pyrolytic rotary furnace, the smoke afterheat is utilized for preheating and drying the raw coal and the carbocoal afterheat is utilized for preheating the combustion air and the coal gas; the heat utilization rate is high, the pulverized coal drying, preheating, pyrolysis and carbocoal cooling process are integrally designed and the pyrolytic process is simplified. The rotary furnace provided by the invention is large in heat exchange area, high in pulverized coal processing amount, simple in structure and suitable for million tons of pulverized coal large-scale pyrolytic production.

The invention discloses a solid heat carrier pyrolyzer. The solid heat carrier pyrolyzer comprises a top cover (1), a bed body (2) and a slewing mechanism, wherein a ring-shaped pyrolyzing tank is formed in the top surface of the bed body; the top cover seals and covers the pyrolyzing tank from the top; a feed opening (5), pyrolyzing gas outlets (6) and a discharge point, which communicate with the pyrolyzing tank are sequentially arranged at intervals in the circumferential direction of a capping ring region corresponding to the pyrolyzing tank in the top cover, in the capping ring region, a fan ring region on one side between the discharge point and the feeding opening is a pyrolyzing region (D1), and a fan ring region on the other side is a reheating region (D2) connected to a heating device; and along with the rotation of the bed body, solid heat carriers in the pyrolyzing tank are reheated through the heating device, the heated solid heat carriers enter the pyrolyzing region to be mixed with pyrolyzing raw materials, then mixed materials are pyrolyzed, one part of pyrolyzed products as pyrolyzed finished products are discharged through the discharge point, and the other part of the pyrolyzed products are circulated to return the reheating region. The pyrolyzer is novel and compact in structure and small in land occupation space, and integrates the functions of pyrolyzing, discharging, heating of solid heat carriers, circulating and the like.