Biomass fuel and solid fossil fuel combined feeding device

Abstract

The utility model relates to a combined feeding device for biomass fuel and solid fossil fuel. The combined feeding device consists of a biomass fuel inlet 1, a biomass fuel crushing device 2, a biomass fuel bin 3, an access door 4, an observation window 5, a biomass feeding device 6, a biomass fuel outlet 7, an isolating valve 8, a fossil fuel inlet 9, a mixed fuel bin 10, a mixed material feeding device 11 and a mixed fuel outlet 12. The device solves the problem that biomass fuel is difficult to feed, provides a combined supply mode of single fuel, dual fuel and mixed fuel for a boiler or an industrial furnace combustion system, improves the use flexibility of the fuel, and provides source support for the technical transformation of blending combustion of the biomass fuel in a coal-fired boiler unit. The device is simple and compact in structure and is suitable for existing project reconstruction and new project construction.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of combustion equipment fuel supply, and is especially suitable for the technical field of biomass fuel and solid fossil fuel represented by coal combined supply. BACKGROUND

[0002] At present, China's energy supply is still dominated by coal. Under the background of double carbon strategy, coal-fired boiler units urgently need low-carbon emission transformation. Biomass fuel is a carbon-neutral, renewable energy source with a wide range of sources, and is one of the alternative fuels needed for low-carbon emission transformation of coal-fired boiler units. In order to reduce the carbon emission intensity of coal-fired boiler units, the state is vigorously promoting the technical transformation of coal-fired boiler units mixed with biomass fuel.

[0003] Conventional biomass fuel has small density and large volume, and existing feeding devices cannot directly send it into the boiler unit, nor can they achieve combined supply of biomass fuel and coal represented by solid fossil fuel. Therefore, a feeding device is needed that can combine biomass fuel and solid fossil fuel represented by coal to supply fuel to the boiler or industrial kiln system. SUMMARY

[0004] In order to solve the problem that the conventional biomass fuel cannot be directly sent into the boiler unit and the biomass fuel and the solid fossil fuel represented by coal cannot be jointly fed, the utility model discloses a biomass fuel and solid fossil fuel joint feeding device. The biomass fuel and solid fossil fuel joint feeding device is composed of a biomass fuel inlet 1, a biomass fuel crushing device 2, a biomass fuel bin 3, an inspection door 4, an observation window 5, a biomass feeding device 6, a biomass fuel outlet 7, a partition valve 8, a fossil fuel inlet 9, a mixed fuel bin 10, a mixed material feeding device 11 and a mixed fuel outlet 12. The biomass fuel inlet 1, the biomass fuel crushing device 2, the biomass fuel bin 3, the biomass feeding device 6 and the biomass fuel outlet 7 constitute a biomass feeding system; the biomass fuel enters the device from the biomass fuel inlet 1, is crushed by the biomass fuel crushing device 2 and then is stored in the biomass fuel bin 3 for standby and is outwardly conveyed. The fossil fuel inlet 9, the mixed fuel bin 10, the mixed material feeding device 11 and the mixed fuel outlet 12 constitute a fossil fuel feeding system, which mixes and processes the fuel from the biomass fuel bin 3 and the fossil fuel inlet 9 and outwardly conveys the fuel. The two are communicated through the partition valve 8, preferably the biomass feeding system is arranged on the upper portion of the partition valve 8 and the fossil fuel feeding system is arranged on the lower portion of the partition valve 8, the opening or closing of the partition valve 8 controls the quantity of the biomass fuel entering the mixed material bin and adjusts the feeding mode to be mixed feeding or independent feeding of the biomass fuel and the fossil fuel. The biomass fuel crushing device 2 is composed of a guide device 2A, a crushing roller 2B and a crushing device shell 2C. The guide device 2A and the crushing roller 2B are installed in the crushing device shell 2C, the guide device 2A is installed obliquely and the crushing roller 2B is installed horizontally or obliquely, the connection mode is welding, bolt connection or flange connection. The biomass feeding device 6 has two material outlets, one of which is the biomass fuel outlet 7 and the other of which is connected with the partition valve 8, the opening or closing of the partition valve 8 communicates or isolates the biomass fuel bin 3 and the mixed fuel bin 10. The partition valve 8 is a plug valve, a flap valve or a star valve and is driven by manual, electric energy or compressed air. The mixed fuel bin 10 has two material inlets, one of which is the fossil fuel inlet 9 and the other of which is connected with the partition valve 8 and is used for the biomass fuel to enter.

[0005] The biomass fuel and solid fossil fuel joint feeding device is provided with the biomass fuel crushing device 2, bulk and large biomass fuel is crushed and then enters the feeding system, and the problem that the biomass fuel appearance size does not meet the requirement of the feeding device is solved in the system.

[0006] The biomass fuel and solid fossil fuel combined feeding device is provided with both or one of the manhole 4 and the observation window 5 on the biomass fuel bin 3 and the mixed fuel bin 10, so that the inside of the fuel bin can be monitored and maintained.

[0007] The biomass fuel and solid fossil fuel combined feeding device has the advantages that compared with the conventional feeding device, the biomass fuel and solid fossil fuel combined feeding device solves the feeding difficulty problem caused by the physical properties of the biomass fuel by the application of the biomass fuel crushing device 2; the biomass fuel and solid fossil fuel combined feeding function is realized by the application and control logic adjustment of the biomass feeding system, the fossil fuel feeding system and the cutoff valve 8; and the device has a simple and compact arrangement structure and is suitable for existing project reconstruction and new project construction. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 The biomass fuel and solid fossil fuel combined feeding device is provided with both or one of the manhole 4 and the observation window 5 on the biomass fuel bin 3 and the mixed fuel bin 10, so that the inside of the fuel bin can be monitored and maintained.

[0009] Figure 2 The biomass fuel and solid fossil fuel combined feeding device is provided with both or one of the manhole 4 and the observation window 5 on the biomass fuel bin 3 and the mixed fuel bin 10, so that the inside of the fuel bin can be monitored and maintained. Figure 1 The biomass fuel and solid fossil fuel combined feeding device is provided with both or one of the manhole 4 and the observation window 5 on the biomass fuel bin 3 and the mixed fuel bin 10, so that the inside of the fuel bin can be monitored and maintained.

[0010] Figure 3 The biomass fuel and solid fossil fuel combined feeding device is provided with both or one of the manhole 4 and the observation window 5 on the biomass fuel bin 3 and the mixed fuel bin 10, so that the inside of the fuel bin can be monitored and maintained.

[0011] The biomass fuel and solid fossil fuel combined feeding device is provided with both or one of the manhole 4 and the observation window 5 on the biomass fuel bin 3 and the mixed fuel bin 10, so that the inside of the fuel bin can be monitored and maintained. DETAILED DESCRIPTION

[0012] The biomass fuel and solid fossil fuel combined feeding device is provided with both or one of the manhole 4 and the observation window 5 on the biomass fuel bin 3 and the mixed fuel bin 10, so that the inside of the fuel bin can be monitored and maintained.

[0013] The biomass fuel and solid fossil fuel combined feeding device is provided with both or one of the manhole 4 and the observation window 5 on the biomass fuel bin 3 and the mixed fuel bin 10, so that the inside of the fuel bin can be monitored and maintained. Figure 1 , Figure 2The utility model discloses biomass fuel and solid fossil fuel combined feeding device, by biomass fuel import 1, biomass fuel breaking device 2, biomass fuel bin 3, access door 4, observation window 5, biomass feeding device 6, biomass fuel export 7, partition valve 8, fossil fuel import 9, mixed fuel bin 10, mix material feeding device 11, mixed fuel export 12 are formed, wherein biomass fuel breaking device 2 is by guiding device 2A, crushing roller 2B, breaking device casing 2C is formed, and guiding device 2A and crushing roller 2B are installed in breaking device casing 2C inside, for the directional sliding and breaking of biomass fuel, guiding device 2A is arranged obliquely, and crushing roller 2B is arranged horizontally or obliquely. Biomass fuel import 1, biomass fuel breaking device 2, biomass fuel bin 3, biomass feeding device 6 and biomass fuel export 7 constitute biomass feeding system, and are arranged in the upper portion of the device;Fossil fuel import 9, mixed fuel bin 10, mix material feeding device 11, mixed fuel export 12 constitute fossil fuel feeding system, and are arranged in the lower portion of the device, and the two are communicated through partition valve 8. For the maintenance and monitoring, two or one of access door 4 and observation window 5 are arranged on biomass fuel bin 3 and mixed fuel bin 10.

[0014] The utility model discloses biomass fuel and solid fossil fuel combined feeding device, in the working process, allows biomass fuel and solid fossil fuel to enter the device simultaneously, according to the operation demand, selects independent or mixed feeding mode to supply the fuel for boiler or industrial furnace combustion system, and the specific working process is: biomass fuel enters the utility model discloses biomass fuel and solid fossil fuel combined feeding device from biomass fuel import 1, under the action of obliquely arranged guiding device 2A, moves to crushing roller 2B, and is broken to meet the required size;The biomass fuel after breaking falls into biomass fuel bin 3 storage under the action of gravity and stores for future use. Biomass feeding device 6 is arranged in the lower portion of biomass fuel bin 3, the upper portion of partition valve 8, when starting biomass feeding device 6, can deliver biomass fuel in biomass fuel bin 3 to biomass fuel export 7 and partition valve 8. Partition valve 8 is connected with biomass fuel bin 3 and mixed fuel bin 10, when biomass feeding device 6 and partition valve 8 are opened simultaneously, biomass fuel in biomass fuel bin 3 can enter mixed fuel bin 10 and store for future use. Solid fossil fuel enters the utility model discloses biomass fuel and solid fossil fuel combined feeding device from fossil fuel import 9, and stores in mixed fuel bin 10 for future use;Mixed fuel bin 10 has two imports, one receives biomass fuel from biomass fuel bin 3, and the other receives solid fossil fuel from fossil fuel import 9. Mix material feeding device 11 is arranged in the lower portion of mixed fuel bin 10, when it starts, can send the mixture of solid fossil fuel or biomass fuel and solid fossil fuel in mixed fuel bin 10 to mixed fuel export 12 after stirring.

[0015] CombineFigure 3 The biomass fuel and solid fossil fuel combined feeding device is further described for the process of supplying fuel for the boiler or industrial furnace combustion system. In the example application, the biomass fuel outlet 7 and the mixed fuel outlet 12 are respectively connected with the corresponding interfaces of the boiler or industrial furnace combustion system 13. Different feeding modes can be realized by different combinations of the biomass feeding device 6, the isolation valve 8 and the mixed feeding device 11. When the biomass fuel bin 3 stores biomass fuel, the biomass feeding device 6 is started, and the biomass fuel can be sent into the boiler or industrial furnace combustion system 13 through the biomass fuel outlet 7. When the mixed feeding device 11 is started, the isolation valve 8 is closed, and the mixed fuel bin 10 only stores solid fossil fuel, the solid fossil fuel can be sent into the boiler or industrial furnace combustion system 13 through the mixed fuel outlet 12. When the isolation valve 8 is opened, the mixed fuel bin 10 stores the mixture of solid fossil fuel and biomass fuel, the mixture of solid fossil fuel and biomass fuel can be sent into the boiler or industrial furnace combustion system 13 through the mixed fuel outlet 12. When the isolation valve 8 is opened, the fossil fuel inlet 9 has no fuel, and the mixed fuel bin 10 only stores biomass fuel, the biomass fuel can be sent into the boiler or industrial furnace combustion system 13 through the mixed fuel outlet 12. The single fuel or double fuel supply switching can be realized by the opening and closing of the biomass feeding device 6 and the mixed feeding device 11.

[0016] The biomass fuel and solid fossil fuel combined feeding device can provide the single fuel, double fuel and mixed fuel combined supply mode for the boiler or industrial furnace combustion system, improve the flexibility of fuel use, and provide source support for the technical modification of the coal-fired boiler unit mixed with biomass fuel. Figure 1 , Figure 2 , Figure 3 The above is only an application example of the utility model, and does not limit the patent range of the utility model. Any equivalent structure, direct or indirect application in the related technical field is also included in the patent protection range of the utility model.

[0017] The above is only an application example of the utility model, and does not limit the patent range of the utility model. Any equivalent structure, direct or indirect application in the related technical field is also included in the patent protection range of the utility model.

Claims

1. A combined feeding device for biomass fuel and solid fossil fuel, comprising a biomass fuel inlet (1), a biomass fuel crushing device (2), a biomass fuel bin (3), an inspection door (4), an observation window (5), a biomass feeding device (6), a biomass fuel outlet (7), an isolation valve (8), a fossil fuel inlet (9), a mixed fuel bin (10), a mixing feeding device (11), and a mixed fuel outlet (12), characterized in that: The biomass fuel inlet (1), biomass fuel crushing device (2), biomass fuel bin (3), biomass feeding device (6), and biomass fuel outlet (7) constitute a biomass feeding system. The fossil fuel inlet (9), mixed fuel bin (10), mixed feeding device (11), and mixed fuel outlet (12) constitute a fossil fuel feeding system. The two are connected by an isolation valve (8). By opening or closing the isolation valve (8), the feeding mode is controlled to be independent feeding of biomass fuel and fossil fuel or mixed feeding.

2. The combined feeding device for biomass fuel and solid fossil fuel according to claim 1, characterized in that: Biomass fuel enters the device through the biomass fuel inlet (1), is crushed by the biomass fuel crushing device (2), and then enters the biomass fuel bin (3) for storage and standby.

3. The combined feeding device for biomass fuel and solid fossil fuel according to claim 1, characterized in that: The biomass feeding device (6) has two material outlets, one of which is a biomass fuel outlet (7) that feeds the biomass fuel stored in the biomass fuel bin (3) into the boiler or industrial furnace combustion system (13). The other is connected to an isolation valve (8) that connects or isolates the biomass fuel bin (3) and the mixed fuel bin (10) by opening or closing the isolation valve (8).

4. The combined feeding device for biomass fuel and solid fossil fuel according to claim 1, characterized in that: The mixed fuel bin (10) has two material inlets, one of which is a fossil fuel inlet (9) for solid fossil fuels to enter, and the other is connected to an isolation valve (8) for biomass fuels to enter.

5. The combined feeding device for biomass fuel and solid fossil fuel according to claim 1, characterized in that: The mixing and feeding device (11) is installed at the bottom of the mixed fuel bin (10). After mixing the solid fossil fuel or biomass fuel stored in the mixed fuel bin (10) with the solid fossil fuel, it is sent to the boiler or industrial furnace combustion system (13) through the mixed fuel outlet (12).

6. The combined feeding device for biomass fuel and solid fossil fuel according to claim 1, characterized in that: The isolation valve (8) is a slide gate valve, flap valve or star valve, and is driven by manual, electric or compressed air.

7. The combined feeding device for biomass fuel and solid fossil fuel according to claim 1, characterized in that: The biomass fuel crushing device (2) consists of a guide device (2A), a crushing roller (2B), and a crushing device housing (2C). The guide device (2A) and the crushing roller (2B) are installed inside the crushing device housing (2C). The guide device (2A) is installed at an angle, and the crushing roller (2B) is installed horizontally or at an angle. The connection method is welding, bolt connection or flange connection.

8. The combined feeding device for biomass fuel and solid fossil fuel according to claim 1, characterized in that: The biomass fuel compartment (3) and the mixed fuel compartment (10) are equipped with either or both of the inspection door (4) and the observation window (5).

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