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

The invention relates to a pulverized coal pyrolysis rotary furnace. The pulverized coal pyrolysis rotary furnace involved includes a rotary furnace body, and the rotary furnace body is provided with a preheating section, a pyrolysis section and a cooling section; the preheating section and the pyrolysis section are equipped with a plurality of heat exchange tubes, and the The cooling section is equipped with multiple semi-coke cooling heat exchange tubes. At least two hot flue gas inlets are arranged at intervals on the heat exchange tube of the pyrolysis section to facilitate adjustment of the temperature distribution in the furnace length direction. The use of the heat exchange tube greatly increases the heat exchange area. The heat exchange tube rotary furnace of the present invention has a large heat exchange area, a large amount of pulverized coal to be processed, and a simple structure, and is suitable for large-scale pyrolysis production of more than one million tons of pulverized coal.

The invention relates to a composite bed reactor and a method for combined production of calcium carbide, gas and tar, and belongs to the field of calcium carbide production. The reactor comprises a hopper, a brake bunker, a moving bed preheating chamber, a tar collector, a gas outlet, a distributing device, an oxygen heat reaction chamber, oxygen spraying burners, a product molten pool and a product outlet, and the hopper is connected with the moving bed preheating chamber by the brake bunker, and the top side surface of the moving bed preheating chamber is provided with the tar collector, and the tar collector is provided with a gas outlet, and the moving bed preheating chamber bottom is provided with a distributing device, and the moving bed preheating chamber is communicated with an oxygen heat reaction chamber by a distributing device, and the oxygen heat reaction chamber bottom is connected with a product molten pool, and the upper portion of the connection between the oxygen heat reaction chamber and the product molten pool is provided with the oxygen spraying burner, and the middle bottom of the product molten pool is provided with a product outlet. The reactor of the invention has the advantages of simple structure and high efficiency, and large scale production is easy to realize, and the raw material is pelleted by powder form carbonaceous raw material and powder form calcium containing raw material, and the contact surface between raw materials is large, the reaction rate is fast, and reactor is convenient for reusing calcium carbide slags.

The invention relates to the technical field of clean combustion energy, and relates to a device for efficiently combusting biomass granular fuel. A primary combustion chamber, a secondary combustion chamber and a burnout chamber are arranged in turn to form a communication structure and combined to form a combustion device main body; the bottom of the primary combustion chamber is manufactured with a primary air chamber with a mesa structure, the bottom end of the primary combustion chamber is provided with a periodical ash outlet and a blast pipe respectively, the lower part of the left sideof the primary combustion chamber is provided with a spiral feeding inlet, and the top space of the primary combustion chamber is provided with a top cap cavity; and the upper part of the right sideof the primary combustion chamber is provided with a downward obliquely-bent smoke guide pipe, an outlet of the smoke guide pipe extends to the middle part of the secondary combustion chamber, the topof the right side of the secondary combustion chamber is provided with an inner component in an open mode, the inner component butts the burnout chamber and the secondary combustion chamber in a communication mode, the bottom end of the secondary combustion chamber is provided with a mesa secondary air chamber and a periodical ash outlet pipe, and the bottom of the secondary air chamber is provided with a blast pipe. The combustion device has the advantages of simple structure, full combustion, high efficiency, good dust removing effect, stable and reliable running, and remarkable energy-saving effect.

The invention discloses an organic waste gas purification device. The device includes a filter box, a negative pressure fan, several exhaust gas branch pipes, an exhaust gas main pipe, an exhaust gas duct and a maintenance system. The blower is connected, and the other end is connected with one end of the waste gas main pipe, and the other end of the waste gas main pipe is connected with the air inlet; a baffle is arranged in the filter box, and the filter box is divided into The first-stage filter chamber and the second-stage filter chamber, the waste gas conduit passes through the baffle and communicates with the first-stage filter chamber and the second-stage filter chamber; the inner wall of the first-stage filter chamber is provided with a protective A primary filter is provided in the cavity surrounded by the protective net, and an activated carbon filter is provided in the secondary filter chamber. The organic waste gas purification device of the present invention has the advantages of good dust removal effect and convenient maintenance.

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 discloses a solid heat carrier pyrolyzer which comprises a top cover (1), a bed (2) and a rotary mechanism. An annular pyrolysis tank is arranged on the top face of the bed, the top cover covers the pyrolysis tank from the upper side, and a feed inlet (5), a pyrolysis gas outlet (6) and a discharge point communicated with the pyrolysis tank are sequentially arranged in the circumferential direction of the sealed annular area, corresponding to the pyrolysis tank, in the top cover in a spaced mode; in the sealed annular area, one side sector ring area between the discharge point and the feed inlet is a pyrolysis area (D1), and the other side sector ring area is a reheating area (D2) provided with heating air pipes (7). Solid heat carriers in the pyrolysis tank rotate along with the bed and are reheated by a heating device, enter the pyrolysis area after being heated, and are mixed with pyrolysis raw materials and pyrolysized, one part of pyrolysis products serve as pyrolysis finished product and are discharged through the discharge point, and the other part of the pyrolysis products circularly flow back to the reheating area. The pyrolyzer is novel and compact in structure and small in occupied space, and integrates pyrolysis, discharging and solid heat carrier heating and circulation functions.

The invention provides a dust suppression device and a dust removal device for a material conveyor. The dust suppression device includes a vertically arranged dust suppression baffle, and the dust suppression baffle is spaced horizontally from the material output end of the material conveyor. Open, the side of the dust suppression baffle facing the material conveyor is the diversion surface, and the diversion surface is concave toward the direction away from the material conveyor, and is a spherical or arc surface; when the material falls from the material conveyor, the material Can hit the diversion surface. The dust suppression device used in the material conveying system of the present invention has better dust suppression effect, and can reduce dust removal and dust suppression costs.

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.