The main components of the gas generated by water vapor passing through hot coke are carbon monoxide and hydrogen. After combustion, water and carbon dioxide are emitted, with trace amounts of CO, HC and NOX. The combustion speed is 7.5 times that of gasoline, and it has good anti-knock performance. According to foreign research and patent reports: the compression ratio can reach 12.5. The thermal efficiency is increased by 20-40%, the power is increased by 15%, and the fuel consumption is reduced by 30%. The exhaust gas purification is close to the European IV standard (these indicators need to be verified, but the effect is certain), and a trace amount of platinum catalyst can be used for purification. Compared with alcohols and ethers, it simplifies manufacturing and reduces equipment, with lower cost and investment. Compression or liquefaction is similar to hydrogen, but there is no need to remove CO, and the investment in website construction is low. The reduced cost and investment can also be used to partially compensate for the investment and cost of compression (compression is also required for alcohol ether production) or liquefaction. Toxic, used in industry as fuel and chemical raw materials.
Passing water vapor through hot coal seams can produce cleaner water gas (the main components are CO and H2). The phenomenon is that the flame rises higher and turns into light blue (the result of burning hydrogen and CO). color). The chemical equation is C H2O (high temperature) → CO H2. This is why wet coal burns more vigorously than dry coal.
Gas plants often deliberately mix a small amount of unpleasant-smelling gas into household water gas. The purpose is that CO and H2 are colorless and odorless gases, so when gas leaks occur, they can be smelled and detected in time. Methane and water can also be used to produce water gas. The chemical equation is CH4 H2O→CO 3H2
[Environmentally friendly water gas generator]
Environmentally friendly water gas generator
Gas fuel kind of. The main components are hydrogen and carbon monoxide. It is obtained by the action of water vapor and red hot anthracite or coke. In industry, the intermittent method in which steam and air are blown alternately is mostly used, or the continuous method in which steam and oxygen are blown together. The calorific value is approximately 10,500 kJ/standard cubic meter. In addition, there is also "semi-water gas" obtained by blowing steam and air together. It can be used as fuel or as a raw material for synthetic ammonia, synthetic petroleum, organic synthesis, hydrogen production, etc.
However, water gas has many hidden dangers. After long-term operation, water gas generators can easily produce large amounts of hydrogen sulfide, tar, phenol water and other pollutants, with an impact radius of up to 500 meters, which is harmful to crops, the air environment and the human body. There is greater damage. The various exhaust gases and stench it produces can cause headaches and dizziness, and residents simply cannot stand it. In addition, since water gas is mainly composed of flammable gases such as carbon monoxide and hydrogen, once leaked, explosions and poisoning are likely to occur, resulting in mass deaths and injuries.
Another:
A kind of low calorific value gas. It is obtained by the action of steam and hot anthracite or coke. The main components are hydrogen and carbon monoxide, and also contain a small amount of carbon dioxide, nitrogen, methane and other components; the content of each component depends on the raw materials used and gasification conditions. It is mainly used as a raw material for Taiwan-made ammonia, synthetic liquid fuel, etc., or as a supplementary source of industrial fuel gas.
In industry, water gas production generally adopts intermittent periodic fixed-bed production technology. The furnace structure adopts the type of UGI gasifier. In the gasifier, carbon and steam mainly undergo the following water gas reaction:
C H2O→CO H2
C 2H2O→CO2 2H2
The above reactions are all It is an endothermic reaction, so heat must be supplied to the gasifier. Usually, air is first sent into the furnace to burn part of the fuel, and the heat is stored in the fuel layer and regenerator, and then steam is passed into the hot fuel layer for reaction. Due to the heat absorption of the reaction, when the temperature of the fuel layer and the regenerator drops to a certain temperature, air is again sent into the furnace to heat up, and so on. When the purpose is to produce fuel gas, in order to increase the calorific value of the gas, the temperature of the furnace gas is sometimes raised, thereby injecting oil into the hot gas to crack the oil, which is the so-called increased water gas.
In recent years, high-temperature gas-cooled reactor technology is being developed, using helium as a heat carrier to transfer nuclear reaction heat to a gasifier as a heat source to produce water gas.