Horizontal pulverized coal fiber separator and working method of horizontal pulverized coal fiber separator

Abstract

The invention relates to a horizontal pulverized coal fiber separator and a working method of the horizontal pulverized coal fiber separator and belongs to the field of the gas chemical industry. According to the horizontal pulverized coal fiber separator and the working method, a rotating shaft is fixed to the front end and the rear end correspondingly through a front end bracket and a rear end bracket; the rotating shaft is matched with a driving device; a rotary screening mechanism is arranged on the portion, located inside the shell, of the rotating shaft, a screen cleaning mechanism is arranged between the inside of the shell and the rotary screening mechanism, and the screen cleaning mechanism is arranged on the upper part of the rotary screening mechanism; a fiber discharging hopperis arranged on the lower part, matched with the rotary screening mechanism, of the shell; the rotary screening mechanism comprises a main frame arranged by a certain inclination, wherein the diameterof the portion, near a feeding opening, of the main frame is smaller than the diameter of the portion, near a discharging opening, of the main frame; and a combing layer is arranged on the inner sideof the main frame, and a filtering layer is arranged on the outer side of the main frame. By the adoption of the horizontal pulverized coal fiber separator and the working method, fibers in pulverized coal can be quickly separated through the cooperation of the combing layer and the filtering layer, and the blockage of holes in the filtering layer is effectively avoided; and the service life of the equipment is prolonged, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a horizontal coal powder fiber separator and a working method of the fiber separator in the field of coal gas chemical industry. Background technique [0002] In the coal gasification process, the raw coal is ground into fine powder by the coal mill, and then sent to the gasification furnace through the burner for gasification; since the raw coal needs to be ground during the process of mining, transportation, storage, etc., the pulverized coal is mixed with Fibers of different lengths, plastic bags, tiles, hemp silk and other messy debris will cause blockage of pneumatic conveying, pipelines, and gasifier bonding at the burner during high-temperature gasification, affecting the long-term stability of the system Production and operation; the function of the fiber separator is to automatically clean all the fibers in the coal powder: plastic bags, porcelain pieces, hemp silk and other sundries, generally installed at the back en...

AI Technical Summary

Problems solved by technology

[0002] In the coal gasification process, the raw coal is ground into fine powder by the coal mill, and then sent to the gasification furnace through the burner for gasification; since the raw coal needs to be ground during the process of mining, transportation, storage, etc., the pulverized coal is mixed with Fibers of different lengths, plastic bags, tiles, hemp silk and other messy debris will cause blockage of pneumatic conveying, pipelines, and gasifier bonding at the burner during high-temperature gasification, affecting the long-term stability of the system Production and operation; the function of the fiber separator is to automatically clean all the fibers in the coal powder: plastic bags, porcelain pieces, hemp silk and other sundries, generally installed at the back end of the coal powder collector, and the outlet of the fiber separator is connected to the raw coal storage bin; E At present, the combing mechanism of the pulverized coal fiber separator generally adopts a double-layer separation structure of combing and grilling; the grill is a combined circular sieve plate, which is composed of 3 to 5 equal blocks; The bar is a long strip-shaped member, and needle-like combs are arranged at intervals of 3.5-4.5mm in the length direction of the upper end surface. The diameter of the combs is 2-3mm, and the length of the combs is 50-75mm. The combs on the bar are arranged obliquely 10-15° towards the direction of rotation; when the comb filter mechanism rotates, the combs with a leading angle of 10-15° first comb the coal powder, and the combed long fibers slide along the leading angle. To the root of the comb, the grid sieves out the short fibers and velvet fibers that have not been cleared out by the comb; once the fiber combed by the comb filter has accumulated to the set amount, it will be removed from the cleaning port after the shutdown; the fiber separator of the prior art There are the following problems: the equipment is a vertical structure, the coal powder flows from top to bottom, the comb filter mechanism rotates horizontally, and the comb bar is arranged radially, it is difficult to fully contact with the coal powder, and the purification efficiency is low; in actual operation , because the fibers are only wound on the thorns without separation, the surface of the thorns is smooth, and the long fibers that have been combed out slide to the roots of the thorns, due to the impact of coal powder and the multiple effects of the rotating structure, it is easy to be separated from the thorns. The thorns are separated and mixed into the pulverized coal again. The fibers are always present on the pulverized coal channel. The agglomerated fibers often cause clogging on the grid surface and affect the pulverized coal flux. The clogging can easily spread to the entire cross section, and the grid is full of coal Coal dust crushes the driving device, causing the overall shutdown of the equipment, and the grill covers the entire section. In the case of blockage and cannot rotate, only two inspection doors cannot remove all the accumulated coal dust, which greatly increases maintenance workers. labor intensity, while affecting the normal operation of the system; a pulverized coal fiber separator is also disclosed in the prior art, application number 201410124692.0, application publication number CN 103894344 A, application publication date 2014.07.02, including the shell and The comb filter mechanism is characterized in that the shell is composed of a pulverized coal pipe and a fiber pipe connected by a horizontal cylinder. The pulverized coal pipe and the fiber pipe are connected with the cylinder by a bifurcated oblique cone. The outlet is connected with the pulverized coal pipe and the fiber pipe; the upper part of the pulverized coal pipe and the fiber pipe is provided with a filter screen with a drawer structure; the comb filter mechanism is composed of a driving device and a licker-in roller, and the licker-in roller is composed of two shafts arranged on the cylinder The seat is set in the barrel; the driving device is fixed on the outside of the barrel by a bracket and connected with the licker-in roller ; The separation efficiency of the fiber separator is low, and it has been damaged during the separation process, which is not conducive to long-term use

Images