Hydrogen-doped pulverized coal mixed combustion device and system thereof

Abstract

The utility model provides a hydrogen-doped pulverized coal mixed combustion device and a hydrogen-doped pulverized coal mixed combustion system. The hydrogen-doped pulverized coal mixed combustion device comprises a hydrogen distribution device, a pulverized coal conveying device, a fuel mixing device and a combustion device, the hydrogen distribution device and the pulverized coal conveying device are arranged in parallel, and an inlet of the hydrogen distribution device and an inlet of the pulverized coal conveying device are communicated with a hydrogen storage tank and a pulverized coal storage bin through pipelines respectively. Outlets of the hydrogen distribution device and the pulverized coal conveying device communicate with the fuel mixing device through pipelines so that hydrogen and pulverized coal can be mixed to form a gas-solid mixture, and the combustion device combusts the gas-solid mixture. According to the hydrogen-doped pulverized coal mixed combustion device, hydrogen and traditional energy are combined and utilized in the industry, and in the combustion process of the hydrogen-doped pulverized coal, emission of pollutants can be reduced, and sustainable low-carbon development of economy is promoted.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen energy novel utilization technical field especially, relates to a kind of hydrogen-doped pulverized coal mixed combustion device and system thereof. BACKGROUND

[0002] With the development of technology, various new energy emerge in an endless stream, and great progress has been made. Green and clean energy is developing rapidly in China, and the scale of new energy such as wind power and photovoltaic is gradually increasing. However, due to the distribution of wind and light resources, wind and light power cannot be connected to the grid in time, causing waste of resources to some extent.

[0003] At the same time, hydrogen energy utilization technology is also developing gradually. However, due to the technical limitations of the industrial chain and existing technical bottlenecks, hydrogen energy in civil use is just starting. At present, most of the hydrogen energy utilization is concentrated in the industrial field. By combining hydrogen with traditional energy for utilization, the consumption of hydrogen energy can be greatly promoted, and it plays a positive role in the sustainable development of the entire energy system. However, the existing technology does not combine hydrogen and coal powder for industrial use. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a hydrogen-doped pulverized coal mixed combustion device and system, which aims to.

[0005] To achieve the above purpose, the utility model provides a hydrogen-doped pulverized coal mixed combustion device, characterized by comprising a hydrogen gas distribution device, a pulverized coal conveying device, a fuel mixing device and a combustion device, wherein,

[0006] The hydrogen gas distribution device and the pulverized coal conveying device are connected in parallel, the inlets of the hydrogen gas distribution device and the pulverized coal conveying device are respectively communicated with a hydrogen gas storage tank and a pulverized coal storage bin through pipelines, and the outlets of the hydrogen gas distribution device and the pulverized coal conveying device are both communicated with the fuel mixing device through pipelines for mixing hydrogen and pulverized coal to form a gas-solid mixture, and the combustion device burns the gas-solid mixture.

[0007] Preferably, the hydrogen gas distribution device comprises a hydrogen check valve and a gate valve connected thereto, the gas inlet of the hydrogen check valve is communicated with the hydrogen gas storage tank, and the outlet of the gate valve is communicated with the inlet of the fuel mixing device.

[0008] Preferably, the hydrogen gas distribution device further comprises a hydrogen flow controller for adjusting the flow of hydrogen, the hydrogen flow controller is located at the outlet of the gate valve, and the outlet of the hydrogen flow controller is communicated with the inlet of the fuel mixing device.

[0009] Preferably, the pulverized coal conveying device comprises a conveying fan and a pulverized coal flow controller, the air inlet of the conveying fan is communicated with the outlet of the pulverized coal storage bin, and the outlet of the pulverized coal flow controller is communicated with the inlet of the fuel mixing device.

[0010] Preferably, the hydrogen-doped pulverized coal mixed combustion device further comprises a controller electrically connected with the pulverized coal flow controller.

[0011] Preferably, the controller is further electrically connected with a hydrogen flow controller, and the controller is electrically connected with a computer.

[0012] Preferably, the fuel mixing device comprises a gas-pulverized coal mixer for mixing the pulverized coal and the hydrogen.

[0013] Preferably, the fuel mixing device further comprises a delivery pump located at an outlet end of the gas-pulverized coal mixer.

[0014] Preferably, the fuel mixing device further comprises a check valve located at an outlet end of the delivery pump, and the combustion device comprises a burner.

[0015] The utility model also proposes a kind of hydrogen-doped pulverized coal mixed combustion system, including above-mentioned hydrogen-doped pulverized coal mixed combustion device, further include hydrogen storage tank and pulverized coal storage bin, the inlet of hydrogen-doped pulverized coal mixed combustion device's hydrogen dispensing device and pulverized coal conveying device is communicated with hydrogen storage tank and pulverized coal storage bin respectively by pipeline.

[0016] The hydrogen-doped pulverized coal mixed combustion device provided by the utility model has the following beneficial effects:

[0017] 1、Since hydrogen is the cleanest energy, it has high calorific value and wide flammability. After mixing and burning with pulverized coal, the combustion quality can be improved, the emission of pollutants can be reduced, energy saving and emission reduction can be promoted, and the environment is more friendly.

[0018] 2、With the aid of fuel mixing device, hydrogen and pulverized coal can achieve the desired mixing effect, which can promote the combustion condition of pulverized coal and achieve more complete combustion effect.

[0019] 3、Mixing hydrogen into pulverized coal can promote the consumption of hydrogen energy, which has positive significance for alleviating the problem of wind and light power generation that cannot be timely consumed, and accelerates the development of energy storage industry.

[0020] 4、The hydrogen-doped pulverized coal mixed combustion device has the advantages of simple structure, stable and reliable operation and easy implementation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the hydrogen-doped pulverized coal mixed combustion system of the utility model.

[0022] In the figure, 1 is a hydrogen storage tank, 2 is a hydrogen check valve, 3 is a gate valve, 4 is a hydrogen flow controller, 5 is a computer, 6 is a pulverized coal storage bin, 7 is a delivery fan, 8 is a pulverized coal flow controller, 9 is a gas-pulverized coal mixer, 10 is a delivery pump, 11 is a check valve, and 12 is a burner.

[0023] The purposes, functional features and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0024] It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

[0025] It should be noted that in the description of the utility model, the positions or location relations indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the positions or location relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] The utility model provides a kind of hydrogen-doped coal powder mixed combustion device.

[0027] With reference to Figure 1 In the preferred embodiment, a kind of hydrogen-doped coal powder mixed combustion device, including hydrogen distribution device, coal powder conveying device, fuel mixing device and combustion device, wherein,

[0028] Hydrogen distribution device and coal powder conveying device are connected in parallel, the inlet of hydrogen distribution device and coal powder conveying device is communicated with hydrogen storage tank 1 and coal powder storage bin 6 respectively through pipeline, the outlet of hydrogen distribution device and coal powder conveying device is communicated with fuel mixing device through pipeline for hydrogen and coal powder mixing to form gas-solid mixture, and combustion device burns gas-solid mixture.

[0029] Specifically, in the embodiment, hydrogen distribution device includes hydrogen check valve 2 and gate valve 3 connected thereto, the gas inlet of hydrogen check valve 2 is communicated with hydrogen storage tank 1, and the outlet of gate valve 3 is communicated with the inlet of fuel mixing device. Hydrogen check valve 2 can ensure that hydrogen flowing out of hydrogen storage tank 1 does not backflow into the tank.

[0030] Further, hydrogen distribution device further includes hydrogen flow controller 4 for adjusting hydrogen flow, hydrogen flow controller 4 is located at the outlet of gate valve 3, and the outlet of hydrogen flow controller 4 is communicated with the inlet of fuel mixing device. Hydrogen flow measured by hydrogen flow controller 4 is compared and timely adjusted to appropriate hydrogen flow, which is fed back to hydrogen flow controller 4, and then the hydrogen flow is adjusted, and corresponding execution action is made.

[0031] Specifically, in the embodiment, the pulverized coal conveying device comprises a conveying fan 7 and a pulverized coal flow controller 8, the air inlet of the conveying fan 7 is communicated with the outlet of the pulverized coal storage bin 6, and the outlet of the pulverized coal flow controller 8 is communicated with the inlet of the fuel mixing device. The pulverized coal in the pulverized coal storage bin 6 is sent to the pulverized coal flow controller 8 through the pipeline after passing through the conveying fan 7.

[0032] Further, the hydrogen-doped pulverized coal mixed combustion device further comprises a controller electrically connected with the pulverized coal flow controller 8. By arranging the controller, the pulverized coal flow controller 8 is automatically controlled.

[0033] Further, the controller 8 is also electrically connected with the hydrogen flow controller 4, and the controller is electrically connected with the computer 5, so that the hydrogen flow controller 4 is automatically controlled, thereby greatly simplifying manual operation.

[0034] Specifically, in the embodiment, the fuel mixing device comprises a gas-pulverized coal mixer 9 for mixing pulverized coal and hydrogen. Under the action of the gas-pulverized coal mixer 9, a hydrogen-doped pulverized coal mixture with good mixing effect at any hydrogen-doping ratio can be obtained.

[0035] Further, the fuel mixing device further comprises a conveying pump 10 located at the outlet end of the gas-pulverized coal mixer 9. By arranging the conveying pump 10, the conveying efficiency of the gas-pulverized coal mixture can be improved.

[0036] Further, the fuel mixing device further comprises a check valve 11 located at the outlet end of the conveying pump 10, and the combustion device comprises a burner 12. By arranging the check valve 11, it can be ensured that the gas-pulverized coal mixture will not flow back to the gas-pulverized coal mixer 9 through the burner 12.

[0037] The working process of the hydrogen-doped pulverized coal mixed combustion device is as follows:

[0038] The hydrogen in the hydrogen storage tank 1 flows out from the tank after decompression, passes through the hydrogen check valve 2 and the gate valve 3 in sequence through the pipeline to the hydrogen flow controller 4, the hydrogen flow controller 4 detects the flow of hydrogen passing through and feeds back the result to the processor of the computer 5 through the data line. At the same time, the pulverized coal in the pulverized coal storage bin 6 is conveyed to the pulverized coal flow controller 8 by the conveying pipeline under the action of the conveying fan 7, the pulverized coal flow controller 8 detects the flow of pulverized coal passing through and feeds back the detection result to the processor of the computer 5 through the data line. After receiving the pulverized coal flow, the processor of the computer 5 calculates the corresponding hydrogen flow according to the hydrogen-doping ratio of the predetermined working condition, compares the flow data with the hydrogen flow detected by the hydrogen flow controller 4, adjusts the hydrogen flow to the correct hydrogen flow, and feeds back the signal to the hydrogen flow controller 4 through the data line. After receiving the signal, the hydrogen flow controller 4 controls the flow of hydrogen passing through to make the hydrogen flow reach the appropriate working condition.

[0039] Hydrogen and coal powder reaching the hydrogen mixing ratio requirement are connected by pipelines and sequentially enter the gas-powder mixer 9. Under the action of the gas-powder mixer 9, the gaseous hydrogen and the pulverous coal powder can be fully mixed to achieve the effect of uniform distribution. Subsequently, under the action of the delivery pump 10, the mixed hydrogen-mixed coal powder mixture passes through the check valve 11, and then the hydrogen-mixed coal powder mixture enters the combustion chamber of the combustor 12 at a certain flow rate and is sprayed in the combustion chamber, and after ignition, the purpose of combustion, heat release and work can be achieved.

[0040] In the process of hydrogen-mixed coal powder, the proportion of hydrogen in the entire mixture is limited. According to the related hydrogen-mixed combustion research, the hydrogen mixing ratio needs to be preset in the computer 5 in advance. The hydrogen mixing ratio is within 25%, and it is increased by 0.5% at the same time. In the actual application process, the appropriate hydrogen mixing ratio range is selected according to the working condition to achieve the optimal combustion condition.

[0041] The hydrogen-mixed coal powder mixed combustion device mixes hydrogen and coal powder to form a new type of fuel of hydrogen-mixed coal powder mixture. The hydrogen and coal powder can be fully mixed and uniformly distributed by the gas-powder mixer 9. Then, under the action of the delivery pump 10, the hydrogen-mixed coal powder can be sprayed in the combustion chamber at a certain speed, and after ignition, heat release and work can be achieved. Due to the high calorific value of hydrogen, it is beneficial to reduce the energy required for ignition, make the combustion more sufficient, and promote the complete combustion of coal powder. Hydrogen is also a clean energy source. In the process of hydrogen-mixed coal powder combustion, it can reduce the emission of pollutants and promote the sustainable low-carbon development of social economy. At the same time, it can also improve the consumption of hydrogen energy and promote the development of energy storage industry, which has positive significance for relieving the problem that wind and light electricity cannot be timely connected to the grid.

[0042] The hydrogen-mixed coal powder mixed combustion device proposed in the embodiment has the following beneficial effects:

[0043] 1. Hydrogen is the cleanest energy source, and it has a high calorific value and a wide flammability. After mixing and combustion with coal powder, the combustion quality can be improved, the emission of pollutants can be reduced, and the environment is more friendly;

[0044] 2. With the help of the fuel mixing device, hydrogen and coal powder can achieve the expected mixing effect, which can promote the combustion condition of coal powder and achieve the effect of more sufficient combustion;

[0045] 3. Mixing hydrogen into coal powder can promote the consumption of hydrogen energy, which has positive significance for relieving the problem that wind and light electricity cannot be timely consumed, and accelerates the development of energy storage industry;

[0046] 4. The hydrogen-mixed coal powder mixed combustion device has the advantages of simple structure, stable and reliable work, and easy realization.

[0047] The utility model further provides a kind of hydrogen-doped pulverized coal mixed combustion system.

[0048] In the preferred embodiment, a hydrogen-doped pulverized coal mixed combustion system includes a hydrogen-doped pulverized coal mixed combustion device, a hydrogen storage tank 1 and a pulverized coal storage bin 6. The hydrogen distribution device of the hydrogen-doped pulverized coal mixed combustion device and the inlet of the pulverized coal conveying device are respectively connected to the hydrogen storage tank 1 and the pulverized coal storage bin 6 through pipelines. The specific structure and beneficial effects of the hydrogen-doped pulverized coal mixed combustion device are described in the above embodiment and will not be repeated here.

[0049] The above is only the preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structural transformation or direct or indirect application in other related technical fields based on the content of the utility model specification and drawings is also included in the patent protection scope of the utility model.

Claims

1. A hydrogen-doped pulverized coal mixing and combustion device, characterized in that, It includes a hydrogen delivery system, a pulverized coal conveying system, a fuel mixing system, and a combustion system, among which, The hydrogen delivery device and the pulverized coal conveying device are connected in parallel. The inlets of the hydrogen delivery device and the pulverized coal conveying device are respectively connected to the hydrogen storage tank and the pulverized coal storage bin through pipelines. The outlets of the hydrogen delivery device and the pulverized coal conveying device are both connected to the fuel mixing device through pipelines for mixing hydrogen and pulverized coal to form a gas-solid mixture. The combustion device burns the gas-solid mixture.

2. The hydrogen-doped pulverized coal mixing and combustion device as described in claim 1, characterized in that, The hydrogen delivery device includes a hydrogen check valve and a gate valve connected thereto. The inlet of the hydrogen check valve is connected to a hydrogen storage tank, and the outlet of the gate valve is connected to the inlet of a fuel mixing device.

3. The hydrogen-doped pulverized coal mixing and combustion device as described in claim 2, characterized in that, The hydrogen delivery device also includes a hydrogen flow controller for adjusting the hydrogen flow rate. The hydrogen flow controller is located at the outlet of the gate valve, and the outlet of the hydrogen flow controller is connected to the inlet of the fuel mixing device.

4. The hydrogen-doped pulverized coal mixing and combustion device as described in claim 2, characterized in that, The pulverized coal conveying device includes a conveying fan and a pulverized coal flow controller. The air inlet of the conveying fan is connected to the outlet of the pulverized coal storage bin, and the outlet of the pulverized coal flow controller is connected to the inlet of the fuel mixing device.

5. The hydrogen-doped pulverized coal mixing and combustion device as described in claim 4, characterized in that, It also includes a controller that is electrically connected to the pulverized coal flow controller.

6. The hydrogen-doped pulverized coal mixing and combustion device as described in claim 5, characterized in that, The controller is also electrically connected to a hydrogen flow controller and to a computer.

7. The hydrogen-doped pulverized coal co-combustion device according to any one of claims 1 to 6, characterized in that, The fuel mixing device includes a gas-powder mixer for mixing pulverized coal and hydrogen.

8. The hydrogen-doped pulverized coal mixing and combustion device as described in claim 7, characterized in that, The fuel mixing device also includes a delivery pump located at the outlet end of the gas-powder mixer.

9. The hydrogen-doped pulverized coal mixing and combustion device as described in claim 8, characterized in that, The fuel mixing device also includes a check valve located at the outlet end of the delivery pump; the combustion device includes a burner.

10. A hydrogen-doped pulverized coal co-combustion system, characterized in that, The device includes a hydrogen-blended pulverized coal combustion apparatus as described in any one of claims 1 to 9, and further includes a hydrogen storage tank and a pulverized coal storage bin. The inlets of the hydrogen distribution device and the pulverized coal conveying device of the hydrogen-blended pulverized coal combustion apparatus are respectively connected to the hydrogen storage tank and the pulverized coal storage bin via pipelines.

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