CN216130974U - Device for combining gas-carbon co-production and combined heat and power co-production based on biomass energy - Google Patents

Abstract

The utility model relates to a device for combining gas-carbon cogeneration and cogeneration based on biomass energy, which comprises a rotary drying kiln, a biomass gasification furnace, a combustion chamber, a waste heat boiler, a steam turbine, a generator, a pure water tank, a pure water pump, a deaerator, a water feed pump, a water feed backheating device, a boiler economizer and the like. The device combines equipment such as a rotary drying kiln, a biomass gasification furnace, a waste heat boiler, a steam turbine, a generator and the like, efficiently utilizes biomass energy to carry out the co-production of gas, carbon, heat and electricity, and improves the energy utilization rate.

Description

Device for combining gas-carbon co-production and combined heat and power co-production based on biomass energy

Technical Field

The utility model relates to a device for combining gas-carbon co-production and combined heat and power co-production based on biomass energy.

Background

In recent years, the technology for utilizing biomass energy is rapidly developed, and great technical breakthroughs are made in many fields. In the current development stage of China, biomass energy utilization technology has become an important part of energy layout war administration. In general, biomass energy utilization technologies can be broadly divided into three categories: one is a direct combustion technology, in which heat is obtained by combustion; the second is a biological conversion technology, which prepares liquid fuel or gas fuel by a fermentation decomposition mode; the third is a chemical conversion technique, which can be divided into an organic solvent extraction method, a gasification method and a pyrolysis method. The biomass gasification furnace is a device which can better utilize the biomass energy. A series of pyrolysis, oxidation and reduction reactions are carried out in the biomass gasification furnace under the condition of controlling the oxygen content, lignin and cellulose in biomass are partially converted into biomass gas (mainly containing CO, H2, CH4, CnHm and the like), the biomass gas directly enters a combustion chamber for combustion, and high-temperature flue gas passes through a waste heat boiler to generate steam to drive a steam turbine generator to generate electric energy and supply heat for peripheral enterprises; the rest of the product is biomass carbon, and can be made into carbon-based fertilizer, barbecue carbon, active carbon and the like with high added value. The biomass fuel gas can also be purified, the byproduct is straw vinegar liquid, and the vinegar liquid can be prepared into leaf fertilizer, deodorant, bactericide and the like after being concentrated. The whole production process has no waste water and waste residue discharge, has better economic benefit and environmental effect, and is a new technology which accords with green, environmental protection and circular sustainable development.

Disclosure of Invention

The utility model aims to combine a biomass gasification furnace and a cogeneration device to form a relatively comprehensive device so as to achieve a gas, carbon, heat and electricity cogeneration mode.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a device that gas charcoal coproduction and combined heat and power generation combined together based on biomass energy, includes rotary drying kiln, biomass gasification stove, combustion chamber, exhaust-heat boiler, steam turbine, generator, pure water case, oxygen-eliminating device, feed pump, feedwater backheat device, boiler economizer, gas-distributing cylinder and boiler steam drum, biomass gasification stove is connected with rotary drying kiln, gasifies the living beings after will drying, generates biomass gas and biomass charcoal, the combustion chamber is connected with biomass gasification stove, and the produced biomass gas of burning biomass gasification stove produces hot flue gas, exhaust-heat boiler is connected with the combustion chamber, utilizes the heat in the hot flue gas to produce superheated steam, the steam turbine is connected with exhaust-heat boiler, utilizes steam to promote the steam turbine and drives the generator electricity generation, the economizer input is connected in feedwater backheat device exit end, the input end of the water supply backheating device is connected to the outlet end of the water supply pump, and the inlet end of the water supply pump is connected to the outlet end of the deaerator.

Further, the pure water is softened water, demineralized water and the like, and is a heat absorption medium in various industrial boilers or power station boilers.

Furthermore, the feed water heat recovery device is a high-pressure heater, a low-pressure heater or a low-temperature economizer.

Compared with the prior art, the utility model has the following obvious effects: the biomass fuel gas produced by the biomass gasification furnace belongs to a green new energy source and has strong vitality. The raw materials generated by the plant gas are crop straws, forest waste and all combustible substances, so the plant gas is an inexhaustible renewable resource. The device combining the rotary kiln, the gasification furnace, the combustion chamber, the waste heat boiler, the steam turbine and the generator can better achieve the purpose of co-production of gas, carbon, heat and electricity, and has higher energy utilization rate.

Drawings

The utility model is further described with reference to the following figures.

Fig. 1 is a schematic structural diagram of the device.

In the figure: 1-rotary drying kiln; 2-a biomass gasification furnace; 3-a biochar collection device; 4-a combustion chamber; 5-a superheater; 6-high temperature economizer; 7-a water supply heat recovery device; 8-a water supply pump; 9-a deaerator; 10-a feed pump; 11-pure water tank; 12-a steam drum; 13-a steam turbine; 14-a generator; 15-waste heat boiler, 16-steam cylinder.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

As shown in figure 1, the device combining gas-carbon cogeneration and cogeneration based on biomass energy comprises a rotary drying kiln, a biomass gasification furnace, a biomass-carbon collecting device, a combustion chamber, a waste heat boiler, a superheater, a steam turbine, a generator, a pure water tank, a pure water pump, a deaerator, a water feed pump, a water feed backheating device, a boiler economizer and a boiler drum. The biomass gasification furnace (2) is connected with the rotary drying kiln (1), the biomass charcoal collecting device (3) is connected with the biomass gasification furnace (2), the combustion chamber (4) is connected with the biomass gasification furnace (2), the waste heat boiler (15) is connected with the combustion chamber (4), the superheater (5) is connected with a boiler drum (12), the steam turbine (13) is connected with a waste heat boiler (15), the steam turbine (13) is connected with the generator (14), the input end of the economizer (6) is connected with the outlet end of the water supply heat recovery device (7), the input end of the feed water backheating device (7) is connected with the outlet end of the feed water pump (8), the inlet end of the water feed pump (8) is connected to the outlet end of the deaerator (9), the inlet end of the water feed pump (10) is connected with the outlet end of the pure water tank (11), and the steam turbine (13) is connected with the steam distributing cylinder (16).

In the embodiment, the combustion chamber (4) is used as heat supply equipment of a waste heat boiler (15) and a rotary drying kiln (1) by burning biomass fuel gas generated by the biomass gasification furnace (2), the rotary drying kiln (1) utilizes low-temperature flue gas to dry biomass fuel, and the waste heat boiler (15) utilizes high-temperature flue gas to generate superheated steam to drive a steam turbine (13) to generate electricity and supply heat. The biomass charcoal generated by the biomass gasification furnace (2) is recovered by the biomass charcoal collection device (3).

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the patents and not for limiting the same; although the present patent is described in detail with reference to preferred embodiments, it should be understood by those of ordinary skill in the art that: modifications to the embodiments of the patent or equivalent replacements of some of the technical features; all such modifications are intended to be included within the scope of this patent without departing from the spirit of the claims.

Claims (8)

1. The utility model provides a device that gas charcoal coproduction and combined heat and power generation combined together based on biomass energy which characterized in that: including exhaust-heat boiler, over heater, economizer, rotary drying kiln, biomass gasification stove, biomass charcoal collector, combustion chamber, steam turbine, generator, pure water case, water-feeding pump, oxygen-eliminating device, feedwater recovery unit, steam-distributing cylinder and steam pocket, rotary drying kiln connects in biomass gasification stove, biomass charcoal collector connects in biomass gasification stove charcoal export, the combustion chamber is connected in biomass gasification stove biomass gas export, exhaust-heat boiler connects in the combustion chamber, the steam turbine is connected in exhaust-heat boiler.

2. The combined gas-carbon and heat-power generation device based on biomass energy as claimed in claim 1, wherein: the boiler is a waste heat boiler and comprises a superheater, an evaporator, an economizer, a steam pocket and a water supply heat recovery device, wherein the input end of the economizer is connected to the outlet end of the water supply heat recovery device, the input end of the water supply heat recovery device is connected to the outlet end of a water supply pump, and the inlet end of the water supply pump is connected to the outlet end of a deaerator.

3. The combined gas-carbon and heat-power generation device based on biomass energy as claimed in claim 1, wherein: the rotary drying kiln is of a straight cylindrical structure and comprises a rotary drying kiln cylinder body, a sleeve barrel around the cylinder body, and an air inlet and an air outlet which are arranged on the sleeve barrel; and a gap is formed between the inner surface of the sleeve and the outer surface of the rotary drying kiln cylinder.

4. The combined gas-carbon and heat-power generation device based on biomass energy as claimed in claim 1, wherein: the fuel of the biomass gasification furnace is biomass fuel dried by a rotary drying kiln; the products produced by the gasification furnace are biomass gas and biomass charcoal, the biomass gas is sent to the combustion chamber for combustion, and the biomass charcoal is recovered by the biomass charcoal recovery device.

5. The combined gas-carbon and heat-power generation device based on biomass energy as claimed in claim 1, wherein: the fuel burnt in the combustion chamber is biomass gas generated after passing through the biomass gasifier.

6. The combined gas-carbon and heat-power generation device based on biomass energy as claimed in claim 1, wherein: the waste heat boiler is communicated with the combustion chamber and generates superheated steam by absorbing energy in high-temperature flue gas generated by the combustion chamber.

7. The combined gas-carbon and heat-power generation device based on biomass energy as claimed in claim 1, wherein: the steam turbine is connected with the waste heat boiler, the superheated steam generated in the waste heat boiler is used for generating power, and the extracted steam or the exhausted steam of the steam turbine is used for supplying steam equipment.

8. The combined gas-carbon and heat-power generation device based on biomass energy as claimed in claim 7, wherein: the steam turbine is a back pressure steam turbine.

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