Device for producing low-carbon alcohol and co-producing CNG (compressed natural gas) by biomass gasification
By designing a device that uses biomass gasification to produce low -carbon alcohol -produced CNG, it solves the problem of high energy consumption, large investment, waste of resources and environmental pollution in existing technologies, and realizes low energy consumption, green, energy -saving production production Effect.
Patent Information
- Application Number
- CN202421190185.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The existing low-carbon alcohol and CNG product production technologies have problems such as high energy consumption, large investment, waste of resources and environmental pollution.
A device that uses biomass gasification to produce low -carbon alcohol -produced CNG, including biomass vaporization furnaces, dust removal purifiers, compressors and coolers. Realize the production of low carbon alcohol and CNG.
It has achieved green production with low energy consumption, low investment, no pollution and no carbon emissions, improved resource utilization, reduced production costs, and achieved the goals of recycling, green, energy saving and negative carbon.
Smart Images
Figure CN222384798U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of biomass chemical production, in particular to a device for producing low-carbon alcohol and co-producing CNG by gasifying biomass. Background Art
[0002] The existing low-carbon alcohol and CNG product production technologies all use coal and water vapor to gasify at high temperature to produce hydrogen, and then after gas purification treatment, hydrogen and CO react under high temperature and high pressure catalyst to synthesize low-carbon alcohol products and CNG products. The process route is long and the investment is huge, the process is highly dangerous, the energy consumption is high, and the carbon dioxide emissions are large. A ton of low-carbon alcohol emits about 2 tons of carbon dioxide, and the resource utilization rate is only 60%, and resources are wasted and the environment is polluted. If it is possible to use biomass pure oxygen decomposition gasification instead of coal resources, it can replace coal resources to directly produce low-carbon alcohol byproducts CNG products, which can reduce huge investment and waste of resources and energy. Therefore, it is imperative to invent a device for producing low-carbon alcohol and co-producing CNG by using biomass gasification to achieve green, negative carbon, low energy, environmental protection and reduce production costs, so as to achieve the goal of killing two birds with one stone. Summary of the invention
[0003] In view of the above situation, in order to solve the defects of the prior art, the purpose of the utility model is to provide a device for producing low-carbon alcohol and co-producing CNG by biomass gasification, which can effectively solve the problems of high energy consumption, large investment, waste of resources, environmental pollution, etc. produced by the prior art.
[0004] The technical solution solved by the utility model is that it includes a biomass gasification furnace, a dust removal purifier, a compressor and a cooler, the air outlet of the biomass gasification furnace is connected to the air inlet of the dust removal purifier, the air outlet of the dust removal purifier is connected to the air inlet of the compressor, the air outlet of the compressor is connected to the air inlet of the desulfurization purifier, the air outlet of the desulfurization purifier is connected to the top air inlet of the low-carbon alcohol reactor, the bottom discharge port of the low-carbon alcohol reactor is connected to the feed port of the first cooler, the discharge port of the first cooler is connected to the feed port of the low-carbon alcohol separator, the top air outlet of the low-carbon alcohol separator is connected to the air inlet of the purification dryer, the air outlet of the purification dryer is connected to the air inlet of the methanation reactor, the air outlet of the methanation reactor is connected to the air inlet of the second cooler, the air outlet of the second cooler is connected to the air inlet of the methanation water separator, the top air outlet of the methanation water separator is connected to the air inlet of the washing purifier, and the methane gas purified by the washing purifier is compressed to be a CNG product.
[0005] The utility model granulates agricultural and forestry wastes and sends them into a gasification furnace for decomposition, purifies, compresses, synthesizes low-carbon alcohols, and then cools and separates the gases. The unreacted gases are sent to methanogens to synthesize methane gas, and after cooling and separation, the methane is compressed to become a CNG product. The agricultural and forestry waste resources are fully utilized to produce low-carbon alcohols and CNG, which are green products with low energy consumption, low investment, no pollution, and no carbon emissions. The utility model is an innovation in the production equipment of low-carbon alcohols and CNG products. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Figure 1 It is a schematic diagram of the structure of the biomass gasification and CNG co-production device of the utility model. DETAILED DESCRIPTION
[0007] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.
[0008] Depend on Figure 1 The utility model includes a biomass gasification furnace, a dust purifier, a compressor and a cooler. The air outlet of the biomass gasification furnace 1 is connected to the air inlet of the dust purifier 2, the air outlet of the dust purifier 2 is connected to the air inlet of the compressor 3, the air outlet of the compressor 3 is connected to the air inlet of the desulfurization purifier 4, the air outlet of the desulfurization purifier 4 is connected to the top air inlet of the low-carbon alcohol reactor 5, the bottom discharge port of the low-carbon alcohol reactor 5 is connected to the feed port of the first cooler 6, and the discharge port of the first cooler 6 is connected to the low-carbon alcohol separator 7. The feed port is connected, the top air outlet of the low-carbon alcohol separator 7 is connected to the air inlet of the purification dryer 8, the air outlet of the purification dryer 8 is connected to the air inlet of the methanation reactor 9, the air outlet of the methanation reactor 9 is connected to the air inlet of the second cooler 10, the air outlet of the second cooler 10 is connected to the air inlet of the methanation water separator 11, the top air outlet of the methanation water separator 11 is connected to the air inlet of the washing purifier 12, and the methane gas purified by the washing purifier 12 is compressed to become the CNG product.
[0009] In order to ensure the use effect, the bottom of the biomass gasification furnace 1 is provided with a first ash discharge port 1 - 1 .
[0010] The bottom of the dust removal purifier 2 is provided with a second ash discharge port 2-1.
[0011] The bottom of the low-carbon alcohol separator 7 is provided with a mixed low-carbon alcohol product discharge port 7-1.
[0012] The methanogenic water separator 11 is provided with a water outlet 11 - 1 at the bottom.
[0013] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.
[0014] The utility model is used in that agricultural and forestry waste is extruded and granulated with oxygen and water vapor and sent to a biomass gasification furnace 1 at about 1000°C, the straw is thermally decomposed and burned to release heat to decompose water vapor to generate hydrogen, carbon monoxide, carbon dioxide, and methane mixed gas, which is sent to a dust removal purifier 2 to separate and purify dust and then sent to a compressor 3, which is compressed to 6.0Mpa and then sent to a desulfurization purifier 4, and the gas purified by the desulfurization purifier 4 is sent to a low-carbon alcohol reactor 5, where hydrogen, carbon monoxide, and carbon dioxide react under the catalysis of a silicon-based catalyst to generate methanol, ethanol, and propanol and then sent to a third reactor. A cooler 6, the product is sent to a low-carbon alcohol separator 7 after cooling to separate methanol, ethanol, propanol mixed low-carbon alcohol products, and the unreacted gas is sent to a purification dryer 8. The gas is sent to a methanation reactor 9 after purification and drying, and reacts to produce methane under the catalysis of a nickel catalyst, and then sent to a second cooler 10 for cooling. The cooled gas is sent to a methanation water separator 11, and the separated methane gas is sent to a washing purifier 12. The methane gas purified by the washing purifier 12 is compressed to become a CNG product, forming a complete low-carbon alcohol production and CNG product co-production device.
[0015] The present invention granulates agricultural and forestry wastes and sends them into a gasification furnace for decomposition, purifies, compresses, synthesizes low-carbon alcohols, and then cools and separates. The unreacted gas is sent to methanogens to synthesize methane gas, and after cooling and separating water, the methane is compressed to become a CNG product. The use of biomass as a raw material for producing chemical and energy products has the advantages of being recyclable, renewable, zero-carbon and green raw materials, thereby achieving the goal of continuously producing green methanol, ethanol, and propanol products by consuming only agricultural and forestry wastes, and co-producing CNG clean energy products, achieving the purpose of zero carbon dioxide emissions and renewable production raw material resources, and completely changing the traditional situation of relying on coal gasification technology to produce these products with non-renewable raw materials such as coal, which causes a large amount of carbon dioxide emissions that cannot be utilized. At the same time, the energy consumption is greatly reduced in the production process, achieving circular, green, energy-saving, and negative-carbon production. It is a technological advancement and innovation in the production of the energy and chemical industry, with huge economic and social benefits and a very broad market prospect.
[0016] It should be pointed out that the above is only a preferred embodiment of the utility model, and does not impose any form of limitation on the utility model. Any technician familiar with the profession can use the technical content disclosed above to make changes or modify it into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model, which all fall within the protection scope of the utility model.
Claims
1. A device for producing low-carbon alcohol and CNG by biomass gasification, comprising a biomass gasification furnace, a dust purifier, a compressor and a cooler, characterized in that: The gas outlet of the biomass gasifier (1) is connected to the gas inlet of the dust purifier (2), the gas outlet of the dust purifier (2) is connected to the gas inlet of the compressor (3), the gas outlet of the compressor (3) is connected to the gas inlet of the desulfurization purifier (4), the gas outlet of the desulfurization purifier (4) is connected to the top gas inlet of the low-carbon alcohol reactor (5), the bottom discharge port of the low-carbon alcohol reactor (5) is connected to the feed port of the first cooler (6), the discharge port of the first cooler (6) is connected to the feed port of the low-carbon alcohol separator (7), and the low-carbon alcohol separator (7) is connected to the feed port of the low-carbon alcohol reactor (5). ) The top gas outlet is connected to the gas inlet of the purifying dryer (8), the gas outlet of the purifying dryer (8) is connected to the gas inlet of the methanation reactor (9), the gas outlet of the methanation reactor (9) is connected to the gas inlet of the second cooler (10), the gas outlet of the second cooler (10) is connected to the gas inlet of the methanation water separator (11), the top gas outlet of the methanation water separator (11) is connected to the gas inlet of the scrubbing purifier (12), and the methane gas purified by the scrubbing purifier (12) is compressed to obtain a CNG product.
2. The device for producing low-carbon alcohol and co-producing CNG by biomass gasification according to claim 1 is characterized in that: The bottom of the biomass gasification furnace (1) is provided with a first ash discharge port 1-1.
3. The device for producing low-carbon alcohol and co-producing CNG by biomass gasification according to claim 1, characterized in that: A second ash discharge port (2-1) is provided at the bottom of the dust removal purifier (2).
4. The device for producing low-carbon alcohol and co-producing CNG by biomass gasification according to claim 1, characterized in that: The bottom of the low-carbon alcohol separator (7) is provided with a mixed low-carbon alcohol product discharge port (7-1).
5. The device for producing low-carbon alcohol and co-producing CNG by biomass gasification according to claim 1, characterized in that: The methanogenic water separator (11) is provided with a water outlet (11-1) at the bottom.