Biomass gas-fired boiler and geothermal well matched collaborative production system

Abstract

The utility model relates to the technical field of biomass fuel, and particularly discloses a biomass gas-fired boiler and geothermal well matched collaborative production system which comprises a biomass gasifier, a gas-fired boiler and a geothermal mechanism, a gas outlet of the biomass gasifier is connected with a gas inlet of the gas boiler through a gas supply pipeline; the geothermal mechanism comprises a mining well, a recharge well and a heat exchanger, a water suction pump is arranged in the mining well, and the water suction pump, the heat source end of the heat exchanger and the recharge well are connected through a heat supply pipeline; an inlet of the cold source end of the heat exchanger is connected with a first water supply pipeline, and an outlet of the cold source end of the heat exchanger is connected with a water inlet of the gas-fired boiler through a second water supply pipeline. According to the system, the biomass gasification furnace, the gas-fired boiler and the geothermal well work cooperatively, so that stable production of the gas-fired boiler can be guaranteed, energy consumption is reduced, and the environment is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass fuels, and in particular to a biomass gas boiler and a geothermal well coordinated production system. Background Art

[0002] At present, gas boilers mostly use coal as fuel to produce hot water and steam to meet the needs of life and production. However, burning coal produces a lot of smoke and dust, which is harmful to the environment and difficult to meet environmental protection needs. In recent years, the process of combining biomass gasification furnaces with gas boilers has been promoted, but it has been found in use that the supply of gas produced by biomass gasification furnaces is difficult to meet the gas boiler's demand for rapid heating of cold water, which results in a longer time for cold water to form steam, and the need to supplement coal, natural gas and other fuels to assist combustion, which in turn brings about problems such as increased smoke and dust and increased energy consumption costs. Utility Model Content

[0003] The purpose of the utility model is to address the defects of the prior art and provide a biomass gas boiler combined with a geothermal well collaborative production system, which can reduce energy consumption and protect the environment while ensuring stable production of the gas boiler through the collaborative operation of the biomass gasification furnace, the gas boiler and the geothermal well.

[0004] The technical solution of the utility model is: a biomass gas boiler and geothermal well coordinated production system, including a biomass gasification furnace, a gas boiler and a geothermal mechanism;

[0005] The gas outlet of the biomass gasifier is connected to the gas inlet of the gas boiler through a gas supply pipeline;

[0006] The geothermal mechanism comprises an extraction well, a reinjection well and a heat exchanger. A water pump is provided in the extraction well. The water pump, the heat source end of the heat exchanger and the reinjection well are connected via a heating pipeline.

[0007] The inlet of the cold source end of the heat exchanger is connected to the first water supply pipeline, and the outlet of the cold source end of the heat exchanger is connected to the water inlet of the gas boiler through the second water supply pipeline.

[0008] Preferably, a cyclone desander and a first water vapor separator are sequentially connected to the heat supply pipeline between the production well and the heat exchanger.

[0009] Preferably, the heat supply pipeline is connected in sequence with a first water pump, a filter group, a second water pump and a second water vapor separator between the heat exchanger and the reinjection well.

[0010] Preferably, a water softener, a soft water tank and a third water pump are connected to the first water supply pipeline.

[0011] Preferably, a deaerator and a fourth water pump are connected to the second water supply pipeline.

[0012] Preferably, the flue gas outlet of the gas boiler is connected to a flue gas pipeline, and the flue gas pipeline is sequentially connected to a denitrifier, an economizer, an air preheater, an induced draft fan, a desulfurization tower and an electrostatic precipitator;

[0013] The economizer is connected to the second water supply pipeline, and the water transported in the second water supply pipeline is preheated by the economizer. The air inlet of the gas boiler is connected to the blower through the air pipeline. The air pipeline is connected to the air preheater, and the air entering the gas boiler is preheated by the air preheater.

[0014] Compared with the prior art, the utility model has the following advantages: the utility model uses a geothermal well to provide a heat source and a heat exchanger to preheat the water entering the gas boiler, which can reduce the fuel consumption of the gas boiler. This can solve the problem of insufficient gas supply in the biomass gasification furnace and the problem of slow heating of cold water, and can reduce the pollution caused by combustion through geothermal energy, while also reducing the fuel cost of the gas boiler;

[0015] By using the flue gas generated by the gas boiler as a heat source, and coordinating with the air preheater and economizer to preheat the combustion air and water entering the gas boiler respectively, the waste heat can be recovered and utilized, further reducing the energy consumption required for production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] In the figure: 1, biomass gasifier, 2, gas supply pipeline, 3, gas boiler, 4, second water supply pipeline, 5, reinjection well, 6, mining well, 7, heating pipeline, 8, cyclone desander, 9, first water vapor separator, 10, heat exchanger, 11, third water pump, 12, first water supply pipeline, 13, water softener, 14, soft water tank, 15, first water pump, 16, filter group, 17, second water pump, 18, second water vapor separator, 19, deaerator, 20, fourth water pump, 21, air pipeline, 22, denitrifier, 23, economizer, 24, air preheater, 25, blower, 26, flue gas pipeline, 27, induced draft fan, 28, desulfurization tower, 29, electrostatic precipitator. DETAILED DESCRIPTION

[0018] The utility model is further described below with reference to the accompanying drawings and embodiments. Example 1

[0019] like Figure 1 A biomass gas boiler and geothermal well collaborative production system includes a biomass gasification furnace 1, a gas boiler 3 and a geothermal mechanism.

[0020] The gas outlet of the biomass gasifier 1 is connected to the gas inlet of the gas boiler 3 through the gas supply pipeline 2 , and the biomass gasifier 1 provides fuel for the gas boiler 3 .

[0021] The geothermal mechanism includes a production well 6, a reinjection well 5 and a heat exchanger 10. A water pump is provided in the production well 6. The water pump, the heat source end of the heat exchanger 10 and the reinjection well 5 are connected through a heating pipeline 7. The water pump extracts geothermal water to provide a heat source for the heat exchanger 10, and then reinjects it into the reinjection well 5.

[0022] The inlet of the cold source end of the heat exchanger 10 is connected to the first water supply pipeline 12 , and the outlet of the cold source end of the heat exchanger 10 is connected to the water inlet of the gas boiler 3 through the second water supply pipeline 4 .

[0023] Working principle:

[0024] The water entering the gas boiler 3 is preheated by providing a heat source through the mining well 6 and using the heat exchanger 10. After preheating, the water enters the gas boiler 3 for producing hot water or steam, which can reduce the fuel consumption of the gas boiler 3.

[0025] This coordination method can not only solve the problem of insufficient gas supply and slow heating of cold water when the biomass gasifier 1 heats up the cold water, but also reduce the pollution caused by combustion through geothermal energy, and also reduce the fuel cost of the gas boiler 3.

[0026] The utility model can reduce energy consumption and protect the environment while ensuring stable production of the gas boiler 3 by means of the coordinated operation of the biomass gasification furnace 1, the gas boiler 3 and the geothermal well. Example 2

[0027] This embodiment is further optimized on the basis of the above embodiment, specifically:

[0028] like Figure 1 A cyclone desander 8 and a first water vapor separator 9 are sequentially connected on the heating pipeline 7 between the mining well 6 and the heat exchanger 10, which are used for discharging sand and stone particles in the geothermal water and separating gas.

[0029] The first water pump 15, the filter group 16, the second water pump 17 and the second water vapor separator 18 are connected in sequence on the heating pipeline 7 between the heat exchanger 10 and the reinjection well 5. The power is provided by the first water pump 15 and the second water pump 17. The filter group 16 and the second water vapor separator 18 are used to filter and exhaust the reinjected water.

[0030] The first water supply pipeline 12 is connected with a water softener 13, a soft water tank 14 and a third water pump 11. The first water supply pipeline 12 is connected with municipal tap water. The tap water first passes through the water softener 13 to soften the water, and then passes through the soft water tank 14 to store and relieve pressure.

[0031] The second water supply pipeline 4 is connected with a deaerator 19 and a fourth water pump 20 . The fourth water pump 20 is used to increase the fluidity of water, and the deaerator 19 is used to reduce the oxygen content in the water. Example 3

[0032] This embodiment is further optimized on the basis of the above embodiment, specifically:

[0033] like Figure 1 In this embodiment, the flue gas outlet of the gas boiler 3 is connected to a flue gas pipeline 26, and the flue gas pipeline 26 is sequentially connected to a denitrifier 22, an economizer 23, an air preheater 24, an induced draft fan 27, a desulfurization tower 28 and an electrostatic precipitator 29.

[0034] The flue gas from the gas boiler 3 is discharged after being subjected to denitration, desulfurization and dust removal in sequence.

[0035] The economizer 23 is connected to the second water supply pipeline 4, and the water transported in the second water supply pipeline 4 is preheated through the economizer 23. The air inlet of the gas boiler 3 is connected to the blower 25 through the air pipeline 21. The air pipeline 21 is connected to the air preheater 24, and the air entering the gas boiler 3 is preheated through the air preheater 24.

[0036] This embodiment uses the flue gas generated by the gas boiler 3 as a heat source, and cooperates with the air preheater 24 and the economizer 23 to preheat the combustion air and water entering the gas boiler 3 respectively, so as to realize the recovery and utilization of waste heat and further reduce the energy consumption required for production.

[0037] The present invention is not limited to the above-mentioned implementation modes. Within the knowledge scope of those skilled in the art, various changes can be made without departing from the purpose of the present invention. The changed contents still belong to the protection scope of the present invention.

Claims

1. A biomass gas boiler and geothermal well collaborative production system, characterized by: Including biomass gasifiers, gas boilers and geothermal units; The gas outlet of the biomass gasifier is connected to the gas inlet of the gas boiler through a gas supply pipeline; The geothermal mechanism comprises an extraction well, a reinjection well and a heat exchanger. A water pump is provided in the extraction well. The water pump, the heat source end of the heat exchanger and the reinjection well are connected via a heating pipeline. The inlet of the cold source end of the heat exchanger is connected to the first water supply pipeline, and the outlet of the cold source end of the heat exchanger is connected to the water inlet of the gas boiler through the second water supply pipeline.

2. According to claim 1, a biomass gas boiler and geothermal well collaborative production system is characterized by: The heating pipeline is located between the production well and the heat exchanger and is connected with a cyclone desander and a first water vapor separator in sequence.

3. The biomass gas boiler and geothermal well collaborative production system according to claim 1 is characterized by: The heat supply pipeline is located between the heat exchanger and the reinjection well and is sequentially connected with a first water pump, a filter group, a second water pump and a second water vapor separator.

4. The biomass gas boiler and geothermal well collaborative production system according to claim 1 is characterized by: The first water supply pipeline is connected with a water softener, a soft water tank and a third water pump.

5. The biomass gas boiler and geothermal well collaborative production system according to claim 1 is characterized by: The second water supply pipeline is connected with a deaerator and a fourth water pump.

6. The biomass gas boiler and geothermal well collaborative production system according to claim 1 is characterized by: The flue gas outlet of the gas boiler is connected to a flue gas pipeline, and the flue gas pipeline is sequentially connected to a denitrifier, an economizer, an air preheater, an induced draft fan, a desulfurization tower and an electrostatic precipitator; The economizer is connected to the second water supply pipeline, and the water transported in the second water supply pipeline is preheated by the economizer. The air inlet of the gas boiler is connected to the blower through the air pipeline. The air pipeline is connected to the air preheater, and the air entering the gas boiler is preheated by the air preheater.

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