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CN-121977221-A - Boiler with intelligent multi-fuel blending device

CN121977221ACN 121977221 ACN121977221 ACN 121977221ACN-121977221-A

Abstract

The invention discloses a boiler with a multi-fuel intelligent blending combustion device, which relates to the technical field of boilers and comprises a boiler and a spiral conveyor, wherein a kneading mechanism is connected to the feeding end of a blanking shell, a wrapping mechanism is connected to the feeding end of the kneading mechanism, a hedging mixing mechanism is connected to the feeding end of the wrapping mechanism, coal dust and dry sludge are converted into high-performance standardized fuel through a hedging mixing, fusion wrapping and cyclone kneading three-stage refining process, superfine uniform mixing of fuel components is realized in a hedging mixing section, then uniform functional coating is coated on the hedging mixing section to form core-shell particles with stable structure, final shaping and compaction are carried out in the kneading section through strong cyclone, the problems of easy separation and asynchronous combustion of mixed fuel are thoroughly solved in the process, the produced core-shell fuel has the remarkable advantages of high combustion synchronism, high burnout rate and low pollutant emission, and the span from low-quality fuel to high-efficiency clean combustion is realized.

Inventors

  • QI SHENG

Assignees

  • 吉林化工大学

Dates

Publication Date
20260505
Application Date
20260203

Claims (9)

  1. 1. The boiler with the multi-fuel intelligent blending device comprises a boiler (12) and a screw conveyor (5) and is characterized in that the feed end of the boiler (12) is connected with the screw conveyor (5), the feed end of the screw conveyor (5) is connected with a blanking shell (9), the feed end of the blanking shell (9) is connected with a kneading mechanism (3), the feed end of the kneading mechanism (3) is connected with a wrapping mechanism (2), and the feed end of the wrapping mechanism (2) is connected with a hedging mixing mechanism (1); the opposite impact mixing mechanism (1) is used for mixing pulverized coal and dry sludge powder together to form mixed fuel particles; The wrapping mechanism (2) is used for comprising a layer of molten medium outside the mixed fuel; the kneading mechanism (3) is used for kneading and extruding the mixed fuel wrapped with the molten medium into compact and homogeneous particles to form the core-shell wrapped fuel.
  2. 2. The boiler with the multi-fuel intelligent blending combustion device according to claim 1, wherein a second heat preservation pipe (6) is fixedly connected to the outer side of the spiral conveyor (5), a second air inlet pipe (4) is fixedly connected to the top end of the second heat preservation pipe (6), a second air outlet pipe (7) is fixedly connected to the side face of the second heat preservation pipe (6), a second temperature sensor (13) is fixedly connected to the inner side of the second heat preservation pipe (6), and a first supporting leg (8) is fixedly connected to the bottom end of the second heat preservation pipe (6).
  3. 3. The boiler with multi-fuel intelligent blending combustion device according to claim 1, wherein the opposite impact mixing mechanism (1) comprises a three-way pipe (101), two ends of the three-way pipe (101) are fixedly connected with a scattering cylinder (102), the top end of the scattering cylinder (102) is fixedly connected with a cylinder cover (107), the top end of the cylinder cover (107) is fixedly connected with a first air inlet pipe (106), the side surface of the scattering cylinder (102) is fixedly connected with a first feed pipe (108), the bottom end of the three-way pipe (101) is fixedly connected with a second support leg (10), the first air inlet pipe (106) is communicated with an external air source, the two first feed pipes (108) are respectively communicated with a pulverized coal conveying pipe and a dry sludge separating conveying pipe, and the other discharge end of the three-way pipe (101) is connected with the feed end of the wrapping mechanism (2).
  4. 4. The boiler with multi-fuel intelligent blending combustion device according to claim 3, wherein the bottom end of the scattering cylinder (102) is fixedly connected with a first motor (103), the tail end of a main shaft of the first motor (103) is fixedly connected with a rotary table (104) which is rotationally connected with the scattering cylinder (102), and the top end of the rotary table (104) is fixedly connected with a scattering rod (105).
  5. 5. The boiler with multi-fuel intelligent blending combustion device according to claim 3, wherein the wrapping mechanism (2) comprises an inner pipe (201) fixedly connected with a three-way pipe (101), a middle pipe (202) is fixedly connected to the outer side of the inner pipe (201), an annular cavity is formed between the inner pipe (201) and the middle pipe (202), a second feeding pipe (203) is fixedly connected to the top end of the middle pipe (202), and the outlet end of the middle pipe (202) is communicated with the feeding pipe of the kneading mechanism (3).
  6. 6. The boiler with multi-fuel intelligent blending combustion device according to claim 5, wherein a first heat preservation pipe (204) is fixedly connected to the outer side of the middle pipe (202), a first temperature sensor (207) is fixedly connected to the inner side of the first heat preservation pipe (204), a second air inlet pipe (205) is fixedly connected to the top end of the first heat preservation pipe (204), and a first air outlet pipe (206) is fixedly connected to the side face of the first heat preservation pipe (204).
  7. 7. The boiler with multi-fuel intelligent mixing and burning device according to claim 5, wherein the kneading mechanism (3) comprises a conical cylinder (309), a third supporting leg (11) is fixedly connected to the bottom end of the conical cylinder (309), a guide cylinder (302) is rotatably connected to the inner side of the conical cylinder (309), a spiral kneading frame (306) is fixedly connected to the outer side of the guide cylinder (302), a through groove (308) is formed in the inner side of the guide cylinder (302), and a feeding groove (307) communicated with the through groove (308) is formed in the contact part of the spiral kneading frame (306) and the guide cylinder (302).
  8. 8. The boiler with multi-fuel intelligent blending combustion device according to claim 5, wherein the outlet end of the middle tube (202) is fixedly connected with a transition tube (301), one end of the transition tube (301) is fixedly connected with a second motor (305), the tail end of a main shaft of the second motor (305) is fixedly connected with a gear (304), one end of the gear (304) is meshed with a toothed ring (303), the toothed ring (303) is fixed on the outer side of the guide tube (302), and a filter screen (310) is embedded on the surface of the transition tube (301).
  9. 9. The boiler with the multi-fuel intelligent blending combustion device according to claim 7, wherein the radial distance from the inner wall of the spiral kneading frame (306) to the inner wall of the conical cylinder (309) is gradually reduced from the feeding end to the discharging end of the conical cylinder (309).

Description

Boiler with intelligent multi-fuel blending device Technical Field The invention relates to the technical field of boilers, in particular to a boiler with a multi-fuel intelligent blending combustion device. 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, wherein the boiler comprises a coal-fired boiler. Currently, the main stream fuel of coal-fired boilers is still single pulverized coal or coal briquette. When attempting to mix with the dry sludge to realize the recycling of wastes, a simple mechanical mixing method is generally adopted. However, due to the significant differences in density, particle size, shape, surface characteristics, etc. of coal and dry sludge, such simple physical mixing is difficult to achieve uniform bonding of the two on a microscopic scale, resulting in extremely easy occurrence of fuel segregation and separation during transportation and combustion. The direct result is that two fuels are burnt out of phase in a non-synchronous way in a hearth, volatile matters are separated out and are seriously disjointed from a coke burnout stage, and finally a series of operation problems such as reduction of combustion efficiency and deterioration of stability of the boiler are caused, so that the boiler with the multi-fuel intelligent blending combustion device is provided for the problems. Disclosure of Invention The invention aims to provide a boiler with a multi-fuel intelligent blending combustion device, which aims to solve the problems in the background technology. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: The utility model provides a boiler with many fuel intelligence adulterants device, includes boiler and screw conveyer, the feed end of boiler is connected with screw conveyer, the feed end of screw conveyer is connected with the unloading shell, the feed end of unloading shell is connected with and rubs the mechanism, the feed end of rubbing the mechanism is connected with parcel mechanism, the feed end of parcel mechanism is connected with the hedging mixing mechanism; The opposite impact mixing mechanism is used for mixing pulverized coal and dry sludge powder together to form mixed fuel particles; The wrapping mechanism is used for comprising a layer of molten medium outside the mixed fuel; The kneading mechanism is used for kneading and extruding the mixed fuel wrapped with the molten medium into compact and homogeneous particles to form the nuclear shell wrapped fuel. Preferably, the outside fixedly connected with second heat preservation pipe of screw conveyer, the top fixedly connected with second intake pipe of second heat preservation pipe, the side fixedly connected with second outlet duct of second heat preservation pipe, the inboard fixedly connected with second temperature sensor of second heat preservation pipe, the bottom fixedly connected with first supporting leg of second heat preservation pipe. Preferably, the opposite impact mixing mechanism comprises a three-way pipe, the two ends of the three-way pipe are fixedly connected with a scattering cylinder, the top end of the scattering cylinder is fixedly connected with a cylinder cover, the top end of the cylinder cover is fixedly connected with a first air inlet pipe, the side surface of the scattering cylinder is fixedly connected with a first feeding pipe, the bottom end of the three-way pipe is fixedly connected with a second supporting leg, the first air inlet pipe is communicated with an external air source, the two first feeding pipes are respectively communicated with a pulverized coal conveying pipe and a dry sludge separating conveying pipe, and the other discharging end of the three-way pipe is connected with the feeding end of the wrapping mechanism. Preferably, the bottom fixedly connected with first motor of section of thick bamboo breaks up, the main shaft end fixedly connected with of first motor breaks up the carousel that section of thick bamboo rotates to be connected with, the top fixedly connected with of carousel breaks up the pole. Preferably, the wrapping mechanism comprises an inner pipe fixedly connected with the three-way pipe, a middle pipe is fixedly connected to the outer side of the inner pipe, an annular cavity is formed between the inner pipe and the middle pipe, a second feeding pipe is fixedly connected to the top end of the middle pipe, and the outlet end of the middle pipe is communicated with the feeding pipe of the kneading mechanism. Preferably, the outside fixedly connected with first insulating tube of well pipe, the inboard fixedly connected with first temperature sensor of first insulating tube, the top fixedly connected with second intake pipe of first insulating tube, the side fixedly connected with first outlet duct of first