Gasifier knowledge: straw gasifier is also called straw gas furnace, environmental protection and energy saving gasifier, straw gas furnace, straw vaporization furnace, household straw gasification furnace, environmental protection and energy saving gasification furnace, biomass gasification furnace, high efficiency Material gas furnace!
Gasification furnace energy saving and environmental protection, straw reactor energy saving and environmental protection, straw power station is energy saving and environmental protection. In 2010, China's low carbon slogan promoted the development of China's science and technology economy. In the past five years, China has been the most effective country in reducing the energy consumption per unit of the five countries. The energy consumption per unit of GDP has continued to decline for eight consecutive years, but it is still more than double that of other developed countries. The Party Central Committee and the State Council have already determined the current industrial restructuring and upgrading of China's economic main line. In the process of completing this process, vigorously developing strategic emerging industries will enable China to continuously reduce energy consumption, which is one of the important tasks of adjusting the industrial structure.
1. What is straw gas?
Straw gas is a kind of combustible gas produced by using biomass to pass through aerobics, using pyrolysis and thermochemical oxidation. This gas is a mixed gas containing carbon monoxide, hydrogen, methane, etc., also known as biomass. gas.
How to deal with a large number of crop straws? A small straw gasifier suitable for general farmers to process and have a simple structure will solve this problem for farmers.
It converts corn stover, corn cob, wheat straw, peanut shell, sawdust, rice husk, etc. into flammable gas, which can be used by farmers to boil water and cook.
First, the principle of straw gasification and gas index straw is the biomass produced by crops through photosynthesis, and its elemental composition is mainly carbon, hydrogen, oxygen, nitrogen, sulfur, phosphorus and so on. The principle of straw gasification is that biomass straw is used as a fuel, and in the state of lack of oxygen, it is not completely burned, and it is converted into combustible gas such as carbon monoxide, hydrogen and methane.
The gasification process consists of three stages, namely drying and retorting, oxidation and reduction.
The main chemical reaction formula for direct combustion is as follows: biomass + oxygen + carbon dioxide + water (oxidation reaction) carbon + carbon dioxide + carbon monoxide (reduction reaction) water + carbon + carbon monoxide + hydrogen (reduction reaction)
Straw gasification technical indicators:
1. Raw corn stalks, jade cores, fuelwood, wood processing waste, etc. The water content of the raw material is required to be less than 20%.
2. The gas production rate can produce 2 cubic meters of gas per kilogram of straw.
3. Gas composition carbon monoxide 11% - 20%, hydrogen 10% - 16%, methane 0.5% - 5%, carbon dioxide 10% - 14%, oxygen less than 1%, hydrogen sulfide less than 20 mg / cubic meter, Tar and dust are less than 10 mg/m3, and gas calorific value is 4000 kJ/m3 to 5000 kJ/m3.
2. Brief description of the process The fuel is burned in the gasifier by anaerobic combustion to produce a combustible gas containing a certain amount of carbon monoxide, hydrogen, methane, etc., and the flammable gas is pressed out from the top of the gasifier by the pressure generated by the small fan. The gas is connected to the cooking appliance through the water collecting filter, dust removal and tar removal device and through the gas pipeline.
Third, the production method of small gasifier
1. 1 old iron drum, 40 watts - 60 watts fan, 2 switches, 2 three-way joints, pipe diameters are 1 inch, length is prepared according to drawings, 1 simple gasifier The production cost does not exceed 100 yuan. It is best to use a large iron drum and weld the relevant parts of the iron barrel according to the drawings.
2. The installation of the furnace tweezers is placed along the bottom of the inner wall of the iron drum (a height of 24 cm), and then the appropriate length of the steel bar is placed on the brick at intervals of 1 cm and fixed with mud or cement. Place two layers of vertical bricks around the iron drum above the furnace, and then use the mud to cover the furnace. The furnace is preferably smeared into a slightly pot bottom shape to facilitate the concentration of fuel in the middle of the nozzle. The inner diameter of the furnace is about 35 cm. . (Be sure to wait until the hearth is dry before igniting)
3. The nozzle of the nozzle is a key part of the gasifier. Because the temperature during combustion is high, the nozzle is easily damaged, so a special nozzle is required. The nozzle can be fixed by a flange (for easy replacement) or directly to the iron drum (re-welding if it needs to be replaced).
4. The function of the water collection bottle is to collect water in the pipeline, remove tar, and have a safety limiting effect.
5. After the indoor cooking stove is installed, the gasification stove should be blue and red after being normally ignited, and the room is smokeless, dust-free and tasteless. The cooker should be placed near the window, and a row of fans should be placed on the window above the cooker to drain the fumes in the kitchen.
Fourth, the instructions for use
After the gasifier is completed, it can be used for ignition.
The method of use is as follows:
1. The preparation of the fuel gasifier requires very strict water content of the fuel, and the water content cannot exceed 20%. If the fuel is too wet, the fuel can be dried in advance. Different fuels are used, and the gasification effect is also different. The sawdust, rice husk, peanut shell and wheat gluten are the best, and the fuel does not need to be pulverized and can be used directly. The choice of corn cob, corn stover, wheat straw, you need to crush or cut into 3 cm -5 cm beforehand. It is estimated that each cubic kilogram of fuel can produce 2 cubic meters of gas. The average household gas consumption is about 5 cubic meters - 6 cubic meters per day, and about 3 kilograms of fuel is needed every day. The gasifier is equipped with a small fan with a power of about 40 watts, which consumes less electricity. In normal use, the monthly electricity bill is less than 2 yuan.
2. Ignition off the cooker switch, open the exhaust switch, fill a small amount of combustibles such as dry wood or thatch from the filling port and ignite it. In order to fully burn the bottom fire, the fan can be turned on to help the gasification effect. The bottom fire in the furnace must be sufficient. After the bottom fire is ignited, the fan is turned off. At this time, the fuel prepared in advance can be filled into the gasifier. The height of the packing requires the fuel to be more than 20 cm above the nozzle. After filling the fuel, cover the filler cover. Turn on the fan. At this time, you will see a large amount of smoke exhausted from the exhaust port. After 2 minutes - 3 minutes, the switch can be turned on before the stove is turned on. After the ignition, the exhaust switch of the gasifier should be turned off. If the cooker is not flammable, the fuel gasification is not complete. The front switch should be turned off immediately, and then ignited after proper exhaust. The flame size is controlled by the front switch.
3. After the fire is finished, turn off the fan, turn off the front switch, open the smoke exhaust switch and the ash plug. The gasifier only needs one ignition, and there is a bottom fire in the furnace after the fire is sealed. When cooking the next time, just open the filling port and add a small amount of fuel.
Five, matters needing attention
1. First of all, pay attention to safety, and strictly follow the instructions for use. Be sure to confirm that the user can operate independently before delivery. According to the data requirements, a row of fans should be added to the kitchen to remove harmful gases from the room.
2. Try to choose high calorific value fuels, such as wood chips, sawdust, etc., and require the fuel to be dry, the finer the better, the different fuel use effects are not the same. If the stove is found to have smoke, the fuel is too big or too wet.
3. When cooking, if the gasifier is used for a long time, it will be found that there is white fumes in the inlet of the cooker, indicating that there is no fuel around the nozzle in the furnace. You can stir the fuel in the furnace or add appropriate fuel. .
4. Furnace hooks are often used to clean dust around and inside the nozzle to prevent the nozzle from clogging.
The gasifier is practical, and the people really understand the benefits and conveniences that the straw gasifier brings to them. The rural areas are very different from the original ones. Energy-saving and environmental protection enters the family, and they ride on electric vehicles. Energy-saving lamps, home with solar energy, households equipped with gasifiers, environmentally clean and sanitary, today we visited, Huamen Town, Shuangfeng County, in the county town we saw the Xiongfeng Women's Waist Drum Team, performances in the square, image expression Describe the changes in rural areas today and the joy of farmers entering a “low carbon lifeâ€.
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