WO2022252388A1

WO2022252388A1 - Horizontal interlayer fluidized-bed biomass micron fuel crusher and method of using same

Info

Publication number: WO2022252388A1
Application number: PCT/CN2021/110695
Authority: WO
Inventors: 王训; 肖波; 许婷婷; 吴琼
Original assignee: 华中科技大学
Priority date: 2021-05-31
Filing date: 2021-08-05
Publication date: 2022-12-08
Also published as: CN113333122B; CN113333122A

Abstract

A horizontal interlayer fluidized-bed biomass micron fuel crusher and a method of using same, wherein the horizontal interlayer fluidized-bed biomass micron fuel crusher comprises a feeding system, a horizontal interlayer crushing chamber, and a discharging system. The feeding system is sequentially provided with a feeding port (1), a feeding and distributing auger (2), and a distributing inlet channel (3) in the moving direction of biomass fuel to be crushed. The horizontal interlayer crushing chamber is provided with a horizontal crushing cylinder and a base (12) that is located below the horizontal crushing cylinder and used for fixing the horizontal crushing cylinder. The horizontal crushing cylinder comprises an upper machine body (8), a lower machine body (9) and a rotating shaft (14) that are detachably connected.

Description

A horizontal interlayer fluidized bed biomass micron fuel crusher and its application method

【Technical field】

The invention belongs to the technical field of biomass fuel, and in particular relates to a horizontal interlayer fluidized bed biomass micron fuel crusher and a use method thereof.

【Background technique】

As a kind of industrial fuel, biomass micron fuel is used in a huge amount and is a one-time consumption. Therefore, it is required to be mass-produced and the production cost is low. Professor Xiao Bo of Huazhong University of Science and Technology and his team have efficiently produced biomass with a particle size of less than 250 Micron's "micron fuel" is called Xiao fuel, Xiao fuel can achieve high temperature combustion above 1400 ℃, and has a broad market prospect. This requires a crusher that can meet the particle size requirements of biomass micron fuel and has high crushing efficiency. Most of the crushed products of the existing crushers have a particle size of more than 10mm, which belongs to the scope of coarse crushing, such as: chopping and stubble returning machines for field operations, green feed crushers, etc. The general hammer crusher cannot meet the requirements for the particle size of the crushed product, and the structure is more complicated. The traditional biomass crushing device has a single function, and the production efficiency of biomass crushing is low.

CN205042568U discloses a biomass fuel crusher, comprising a crusher main body, a feed roller and a cutter roll are arranged in the crusher main body, the feed end of the crusher main body is connected with the output end of the feeding belt conveyor, and the discharge end of the crusher main body The end is connected with the input end of the discharge belt conveyor; a forced feeding roller is set above the feeding roller; the blades on the knife roller are arranged in a dislocation. In this technical solution, the blades on the cutter roll are dislocated in sections, which reduces the damage of hard impurities to the blades in the process of processing biomass fuel, but the crushing effect is difficult to meet the requirements for micron particle size, and there is still room for improvement.

CN104492567A discloses a biomass fuel crusher, including a support base, a frame is arranged on the support base, a feeding bin is arranged at the front of the frame, and a horizontally arranged crawler-type feeding conveyor is arranged in the feeding bin; the crawler-type feeding conveyor There is a forced feeding roller on the top of the rear end of the machine, and a crushing chamber is arranged on the frame at the rear of the forced feeding roller, and a crushing roller is arranged in the crushing chamber, and a crushing cutter head is arranged on the roller surface of the crushing roller. The crushing and separating screen is coaxially set on the outer periphery. The crushing and separating screen is equipped with a crushing inlet that cooperates with the forced feeding roller at the front; There is a discharge conveyor below the discharge port. The technical scheme has a reasonable cutter setting, which improves the versatility of the crusher, but there is still room for improvement in the crushing effect.

To sum up, the prior art still lacks a biomass fuel shredder whose particle size of the crushed product can reach the micron level.

【Content of invention】

In view of the above defects or improvement needs of the prior art, the present invention provides a horizontal interlayer fluidized bed biomass micron fuel crusher, which boils the bottom material through the fluidized bed at the bottom of the horizontal crusher, and the The rotary throwing force enables the material to interact with the crushing tool in an all-round way at an angle of 360°. At the same time, the horizontal crushing cylinder is divided into several small crushing chambers by using perforated plates, so that elastic biomass materials can be efficiently grinded under compression conditions. Crushing can greatly improve the efficiency of biomass micro-fuel crushing, thereby solving the technical problem that the particle size of crushed products is difficult to reach the micron level by express delivery.

In order to achieve the above object, according to one aspect of the present invention, a kind of horizontal interlayer fluidized bed biomass micron fuel breaker is provided, comprising a feed system, a horizontal interlayer crushing chamber and a discharge system; the feed system Along the movement direction of the biomass fuel to be crushed, there are sequentially provided a feed inlet, a feed distribution auger and a distribution inlet channel;

The horizontal compartment crushing chamber is provided with a horizontal crushing cylinder, a machine seat located below the horizontal crushing cylinder and fixing the horizontal crushing cylinder, and the horizontal crushing cylinder includes an upper body, a lower body, and a detachable connection. The body and the rotating shaft, the cloth inlet channel communicates with the upper body, the upper body and the lower body are symmetrically distributed along the plane where the rotating shaft is located, the fixed seat of the rotating shaft is located in the horizontal crushing At the midpoint in the length direction of the cylinder, the rotating shaft is fixedly connected with a cutter. The interior of the horizontal crushing cylinder is divided into several crushing chambers by a cylindrical perforated plate. The pipe wall of the upper body is provided with crushing material In the inner channel, the bottom of the lower body is provided with a fluidized bed, and the fluidized bed can blow up the biomass fuel falling into the bottom of the horizontal crushing cylinder;

The discharge system includes a frame structure that covers the internal channel of the crushed material and an induced draft fan that communicates with the frame structure through the discharge port, and the frame structure can communicate with the internal channel of the crushed material and the discharge port. The mouth forms an inner channel cavity, and the broken biomass micron fuel driven by the induced draft fan is discharged along the inner channel of the broken material, the inner channel cavity and the discharge port.

Preferably, the fluidized bed includes an air nozzle, an air collection chamber and a blower, the air nozzle runs through the lower body, the air nozzle is fixedly connected with the air collection chamber, and the air collection chamber is connected to the air inlet through the air inlet. Blower connected.

Preferably, the angle between the air flow incident direction of the air nozzle and the normal line of the air nozzle is 100-150°, preferably 105-130°.

Preferably, the inner channel cavity is provided with a fine powder screen.

Preferably, the hole diameter of the porous plate of the crushing chamber is 5-50 mm, preferably 10-20 mm; the cross-sectional diameter of the crushing chamber is 15-80 mm, preferably 25-50 mm.

As a preference, the pore diameter of the inner channel of the crushed material is 0.5-3.0 mm, preferably 0.8-2 mm.

As a preference, the feed distribution auger is a spiral stirring feed.

Preferably, the number of the knives is 2-20, preferably 4-12.

According to another aspect of the present invention, a method for using a crusher is provided, comprising the following steps:

(1) Enter the biomass micron fuel into the interior of the horizontal compartment crushing chamber through the feed inlet, the feed distribution auger and the distribution inlet channel in sequence;

(2) The biomass micron fuel falling into the bottom of the lower body boils through the fluidized bed, and is initially crushed under the rotary throwing force of the cutter;

(3) The biomass micron fuel after primary crushing enters the crushing cavity for further grinding and crushing;

(4) The crushed biomass micron fuel is driven by the induced draft fan and discharged along the inner passage of the crushed material, the cavity of the inner passage and the discharge port.

The beneficial effects of the present invention have:

(1) The present invention combines tool treatment and crushing cavity deep treatment, and the fluidized bed boils the bottom material, and the rotating throwing force of the rotary knife enables the material to interact with the crushing tool in all directions at an angle of 360°, Carry out preliminary crushing, and then divide the horizontal crushing cylinder into several small crushing chambers with perforated plates, and the primary crushed fuel enters the crushing chamber, so that elastic biomass materials can be efficiently ground and crushed under compression conditions, with high crushing efficiency. The crushing effect is good, and finally the micron fuel with a particle size of less than 250 microns can be obtained, which meets the particle size requirement of biomass micron fuel;

(2) The invention has reasonable design, simple and compact structure, convenient installation and replacement of cutter shaft blades, convenient maintenance, and improves the working efficiency, crushing quality and working life of the crusher, reduces power consumption, use cost and operating cost, and has broad advantages. market application prospects.

【Description of drawings】

Fig. 1 is a device structure diagram of the present invention;

Among them: feed inlet 1, feed material auger 2, cloth inlet channel 3, material outlet 4, micropowder screen 5, crushed material inner channel 6, inner channel cavity 7, upper body 8, lower body 9, inlet Air port 10, fluidized bed 11, machine base 12, cutter 13, rotating shaft 14, crushing chamber 15.

【Detailed ways】

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

Example

A horizontal interlayer ebullating bed biomass micron fuel crusher, as shown in Figure 1,

It includes a feed system, a horizontal compartment crushing chamber and a discharge system; the feed system is sequentially provided with a feed inlet 1, a feed distribution auger 2 and a distribution inlet channel 3 along the movement direction of the biomass fuel to be crushed;

The horizontal compartment crushing chamber is provided with a horizontal crushing cylinder, a base 12 located below the horizontal crushing cylinder and fixing the horizontal crushing cylinder, and the horizontal crushing cylinder includes a detachably connected upper body 8 , the lower body 9 and the rotating shaft 14, the cloth inlet channel 3 communicates with the upper body 8, the upper body 8 and the lower body 9 are distributed symmetrically along the plane where the rotating shaft 14 is located, and the rotating shaft The fixed seat of 14 is located at the midpoint of the length direction of the horizontal crushing cylinder, the rotating shaft 14 is fixedly connected with the cutter 13, and the interior of the horizontal crushing cylinder is divided into several crushing chambers by a cylindrical perforated plate 15. The tube wall of the upper body 8 is provided with an internal channel 6 for crushing materials, and the bottom of the lower body 9 is provided with a fluidized bed 11, which can displace the biomass fuel falling into the bottom of the horizontal crushing cylinder. blow up;

The discharge system includes a frame structure that covers the internal channel 6 of the crushed material and an induced draft fan that communicates with the frame structure through the discharge port 4, and the frame structure can communicate with the internal channel 6 of the crushed material and the The discharge port 4 forms an inner channel cavity 7, and the crushed biomass micron fuel driven by the induced draft fan is discharged along the crushed material inner channel 6, the inner channel cavity 7 and the discharge port 4.

As a preferred embodiment, the ebullating bed 11 includes an air nozzle, an air collection chamber and a blower, the air nozzle runs through the lower body 9, the air nozzle is fixedly connected with the air collection chamber, and the air collection chamber It communicates with the blower through the air inlet 10.

As a preferred embodiment, the angle between the air flow incident direction of the air nozzle and the normal line of the air nozzle is 100-150°, preferably 105-130°.

As a preferred embodiment, the inner channel cavity 7 is provided with a fine powder screen 5 .

As a preferred embodiment, the diameter of the perforated plate of the crushing chamber 15 is 5-50 mm, preferably 10-20 mm; the cross-sectional diameter of the crushing chamber 15 is 15-80 mm, preferably 25-50 mm.

As a preferred embodiment, the diameter of the inner passage 6 of the crushed material is 0.5-3.0 mm, preferably 0.8-2 mm.

As a preferred embodiment, the feeding and distributing auger 2 is a screw agitating feeding.

As a preferred embodiment, the number of the cutters 13 is 2-20, preferably 4-12.

When applying this embodiment, the following steps are included:

(1) Biomass micron fuel enters the inside of the horizontal interlayer crushing chamber through feed inlet 1, feed cloth auger 2 and cloth inlet channel 3 successively;

(2) The biomass micron fuel falling into the bottom of the lower body 9 boils through the fluidized bed 11, and is initially crushed under the rotary throwing force of the cutter 13;

(3) After the primary crushing, the biomass micron fuel enters the crushing chamber 15 for further grinding and crushing under compression conditions;

(4) The crushed biomass micron fuel is driven by the induced draft fan and discharged along the inner passage 6 of the crushed material, the inner passage cavity 7 and the discharge port 4 .

It is easy for those skilled in the art to understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, All should be included within the protection scope of the present invention.

Claims

A horizontal interlayer fluidized bed biomass micron fuel crusher, characterized in that it includes a feed system, a horizontal interlayer crushing chamber and a discharge system; the feed system is sequentially moved along the direction of movement of the biomass fuel to be crushed It is provided with a feed inlet (1), a feed and distribution auger (2) and a distribution inlet channel (3);

The horizontal compartment crushing chamber is provided with a horizontal crushing cylinder and a base (12) which is located below the horizontal crushing cylinder and fixes the horizontal crushing cylinder, and the horizontal crushing cylinder includes a detachably connected upper Body (8), lower body (9) and rotating shaft (14), the cloth inlet channel (3) communicates with the upper body (8), the upper body (8) and the lower body (9) Symmetrically distributed along the plane where the rotating shaft (14) is located, the fixed seat of the rotating shaft (14) is located at the midpoint of the length direction of the horizontal crushing cylinder, and the rotating shaft (14) is fixedly connected with a cutter (13), the inside of the horizontal crushing cylinder is divided into several crushing cavities (15) by using a cylindrical perforated plate, and the tube wall of the upper body (8) is provided with an internal channel (6) for crushing materials. The bottom of the lower body (9) is provided with a fluidized bed (11), and the fluidized bed (11) can blow up the biomass fuel falling into the bottom of the horizontal crushing cylinder;

The discharge system includes a frame structure that covers the internal channel (6) of the crushed material and an induced draft fan that communicates with the frame structure through the discharge port (4), and the frame structure can communicate with the crushed material. The channel (6) and the discharge port (4) form an inner channel cavity (7), and the crushed biomass micron fuel is driven by an induced draft fan along the inner channel (6) of the crushed material, and the inner channel cavity (7) And discharge port (4) discharge.
The crusher according to claim 1, characterized in that, the fluidized bed (11) includes an air nozzle, an air collection chamber and a blower, the air nozzle runs through the lower body (9), and the air nozzle is connected to the The gas collection chamber is fixedly connected, and the gas collection chamber communicates with the blower through the air inlet (10).
The crusher according to claim 2, characterized in that, the angle between the air flow incident direction of the air nozzle and the normal line of the air nozzle is 100-150°, preferably 105-130°.
The crusher according to claim 1 or 2, characterized in that, the inner channel cavity (7) is provided with a fine powder screen (5).
The crusher according to claim 4, characterized in that, the aperture of the porous plate of the crushing cavity (15) is 5-50 mm, preferably 10-20 mm; the crushing cavity (15) is cylindrical, The cross-sectional diameter is 15-80 mm, preferably 25-50 mm.
The crusher according to claim 5, characterized in that, the diameter of the inner passage (6) of the crushed material is 0.5-3.0mm, preferably 0.8-2mm.
The crusher according to claim 1, characterized in that, the feeding and distributing auger (2) is a screw agitating and feeding.
The crusher according to claim 1, characterized in that, the number of the knives (13) is 2-20, preferably 4-12.
According to the use method of the crusher according to any one of claims 1-8, it is characterized in that it comprises the following steps:

(1) Enter the biomass micron fuel into the interior of the horizontal compartment crushing chamber through the feed inlet, the feed distribution auger and the distribution inlet channel in sequence;

(2) The biomass micron fuel falling into the bottom of the lower body boils through the fluidized bed, and is initially crushed under the rotary throwing force of the cutter;

(3) The biomass micron fuel after primary crushing enters the crushing cavity for further grinding and crushing;

(4) The crushed biomass micron fuel is driven by the induced draft fan and discharged along the inner passage of the crushed material, the cavity of the inner passage and the discharge port.