CN-115614739-B - Energy-saving boiler combustion system of material returning device for solid waste boiler

CN115614739BCN 115614739 BCN115614739 BCN 115614739BCN-115614739-B

Abstract

The application relates to the field of boilers, in particular to an energy-saving boiler combustion system of a returning device for a solid waste boiler, which comprises a boiler, wherein a cyclone separator for separating flue gas discharged by the boiler is arranged on the boiler, a coal ash separation device is arranged on the cyclone separator and is used for separating coal ash in solid materials separated by the cyclone separator, the coal ash separation device comprises a coal ash separation box, a first ash outlet for discharging coal ash and an impurity discharge outlet for discharging impurities are formed in the coal ash separation box, and a first returning device is arranged on the coal ash separation box and is used for returning the coal ash discharged by the first ash outlet into the boiler. The application has the effect.

Inventors

YANG HAO
Ye Renhe
ZHANG BOHAI
XU CAIQIANG
LU SHIFAN

Assignees

温州宏泽热电股份有限公司

Dates

Publication Date: 20260505
Application Date: 20221013

Claims (5)

1. The energy-saving boiler combustion system of the material returning device for the solid waste boiler comprises a boiler (1) and is characterized in that a cyclone separator (11) for separating flue gas discharged by the boiler (1) is arranged on the boiler (1), a coal ash separating device (2) is arranged on the cyclone separator (11), the coal ash separating device (2) is used for separating coal ash in solid materials separated by the cyclone separator (11), the coal ash separating device (2) comprises a coal ash separating box (21), a first ash outlet (22) for discharging coal ash and an impurity discharging outlet (221) for discharging impurities are formed in the coal ash separating box (21), and a first material returning device (12) is arranged on the coal ash separating box (21) and is used for returning coal ash discharged by the first ash outlet (22) into the boiler (1); the coal ash separation box (21) is also provided with a clay separation device (4), the feeding end of the clay separation device (4) is communicated with an impurity discharge hole (221), and the clay separation device (4) is used for separating clay in granular materials; The clay separating device (4) comprises a clay separating box (41) and a sliding assembly (42), the sliding assembly (42) comprises first sliding rails (43) which are oppositely arranged in the clay separating box (41), sliding blocks (44) are arranged between the first sliding rails (43), first driving parts (431) for driving the sliding blocks (44) to slide are arranged on the clay separating box (41), sliding grooves (441) are arranged on the sliding blocks (44), low-pressure water guns (45) are arranged on the sliding grooves (441) in a sliding mode, second driving parts (432) for driving the low-pressure water guns (45) to slide are arranged on the sliding blocks (44), the low-pressure water guns (45) slide in directions close to or far away from the first sliding rails (43), the low-pressure water guns (45) are used for scattering and wetting clay, and the sliding assembly (42) is used for controlling the positions of the low-pressure water guns (45) to process materials in the clay separating box (41); The waste water filter is characterized in that a clay discharge hole (46) for discharging clay and a waste water discharge hole (461) for discharging waste water are formed in the clay separation box (41), a waste water filter screen for filtering waste water is arranged on the clay discharge hole (46), a water circulation device (5) is arranged on the clay separation box (41), a feed end of the water circulation device (5) is communicated with the clay discharge hole (46), the water circulation device (5) comprises a water circulation box (51), a clay filter cloth (52) for filtering clay is arranged in the water circulation box (51), a water storage cavity (53) for storing water filtered by the clay filter cloth (52) is formed in the water circulation box (51), and a pressurized water driving piece (54) for conveying the water in the water storage cavity (53) to the low-pressure water gun (45) is arranged on the water circulation box (51).
2. The energy-saving boiler combustion system for a returning charge device of a solid waste boiler according to claim 1, wherein the coal ash separation device (2) further comprises an air blowing box (23) arranged at the inner bottom of the coal ash separation box (21), a plurality of first air holes (231) for air outlet are formed in the air blowing box (23), protective filter cloth (24) for filtering materials is covered in the first air holes (231), the first air holes (231) are used for blowing coal ash to a first ash outlet (22), air pipes (25) for air supply are arranged at two ends of the air blowing box (23), a plurality of first baffle plates (26) and second baffle plates (27) are arranged in the air blowing box (23), the air blown by the air pipes (25) is blocked and scattered, the second baffle plates (27) are arranged in a dislocation mode with the first baffle plates (26), and the second baffle plates (27) are used for carrying out secondary scattering on the air scattered by the first baffle plates (26).
3. The energy-saving boiler combustion system for a return device of a solid waste boiler according to claim 2 is characterized in that a vibration inner box (3) is arranged in the coal ash separation box (21), a second ash outlet (31) corresponding to the first ash outlet (22) is formed in the vibration inner box (3), the impurity discharging hole (221) is further formed in the vibration inner box (3), a second air hole (32) corresponding to the first air hole (231) is further formed in the vibration inner box (3), a vibration piece (21) is arranged on the coal ash separation box (21), and the vibration piece (3) is used for controlling the vibration of the vibration inner box (3), and the vibration inner box (3) is used for enabling materials in the coal ash separation box (21) to vibrate.
4. The energy-saving boiler combustion system for a return device of a solid waste boiler as set forth in claim 1, wherein the clay separating box (41) is further provided with a dryer (6) for drying the gangue, and a feeding end of the dryer (6) is communicated with a gangue discharging port (461).
5. The energy-saving boiler combustion system for a return device of a solid waste boiler according to claim 4, wherein a pulverizer (61) for pulverizing waste rock is arranged on the dryer (6), a feeding end of the pulverizer (61) is communicated with a discharging end of the dryer (6), a second return device (13) is arranged on the pulverizer (61), a feeding end of the second return device (13) is communicated with a discharging end of the pulverizer (61), and the second return device (13) is used for returning the pulverized waste rock into the boiler (1).

Description

Energy-saving boiler combustion system of material returning device for solid waste boiler Technical Field The application relates to the field of boilers, in particular to an energy-saving boiler combustion system of a returning charge device for a solid waste boiler. Background The boiler is an energy conversion device, the energy input to the boiler is chemical energy and electric energy in fuel, and the boiler outputs steam, high temperature water or organic heat carrier with certain heat energy. The separator is installed on the discharge port of the boiler, and the material separated by the separator is sent to the boiler again for combustion. The material returning device is used for returning the materials separated by the separator into the boiler, wherein the materials comprise coal ash, gangue and clay, so that the balance of the materials in combustion is realized, the temperature of the materials in combustion is regulated and controlled, the material sealing is realized, and the positive pressure flue gas in the boiler is placed in the separator with negative pressure in a reverse series manner, so that the flue gas is short-circuited, and the normal operation of the separator is influenced. In view of the above related art, the inventors consider that there are disadvantages in that the material separated by the separator has a large amount of granular impurities in addition to the coal ash, and the granular impurities are difficult to mix between the burning coals after being sent back into the boiler by the material returning device due to the large size, so that the impurities are easy to accumulate, the feeding of the subsequent material returning device is easy to be influenced by the accumulation of the impurities, and the temperature in the boiler is also easy to be uneven, so that the normal operation of the boiler is influenced. Disclosure of Invention In order to solve the problem that the normal operation of a boiler is affected by the conversion of particles into impurities, the application provides an energy-saving boiler combustion system of a returning device for a solid waste boiler. The application provides an energy-saving boiler combustion system for a material returning device of a solid waste boiler, which adopts the following technical scheme: The utility model provides an energy-conserving boiler combustion system for returning charge device of solid waste boiler, includes the boiler, be provided with the cyclone that is used for carrying out the separation to boiler exhaust flue gas on the boiler, be provided with coal ash separator on the cyclone, coal ash separator is arranged in separating the coal ash in the solid material that cyclone separated, coal ash separator is including the coal ash separator box, offer the first ash outlet that is used for supplying the coal ash to go out and supply impurity discharge gate of impurity ejection of compact on the coal ash separator box, be provided with first material returning device on the coal ash separator box, first material returning device is used for returning the coal ash of first ash outlet ejection of compact to the boiler. Through adopting above-mentioned technical scheme, after boiler exhaust flue gas, exhaust flue gas will get into cyclone, and under cyclone's centrifugal force effect, separate the great solid material of weight from the flue gas and get into the coal ash separator box in, rethread coal ash separator comes out the coal ash in the solid material, and get into first material return ware through first ash outlet, rethread first material return ware returns the material to the boiler, thereby realized returning the material to the coal ash, and separate out the waste rock and the clay of size great, make only the coal ash return material that weight is less, the size is less can fill smoothly in the clearance between the coal in the burning because of the size is little, thereby play material balance, regulate and control material temperature's effect, still will separate waste rock and clay, between waste rock and the clay coal have been reduced, thereby the probability that the emergence is piled and is caused the influence to the normal work of boiler. Optionally, the coal ash separator is still including setting up the box of blowing in the bottom of coal ash separator box, set up a plurality of first gas pockets that are used for giving vent to anger on the box of blowing, the cover is provided with the protection filter cloth that is used for filtering the material in the first gas pocket, first gas pocket is used for blowing the coal ash to first ash outlet, be provided with the trachea that is used for the air feed on the both ends of box of blowing, be provided with a plurality of first baffles and second baffle in the box of blowing, first baffle is used for blockking the gas that the trachea was blown in and breaks up, the second baffle is dislocation set with first baffle, the second ba