Press: How can coal resources efficient and clean use? This direction on the development of the issue requires our scientific thinking. We think we should develop and put forward the quantitative basic formula according to the concept of energy and environmental benefits:
Q practical coal energy / (Q total raw coal energy + total energy consumption of coal using Q) = maximum
(B use of coal pollution emissions + B pollution emissions) / B Total coal original pollutants = minimum
Comprehensive scientific examination and management, can not according to the traditional technical thinking and the current technical standards, only consider the efficiency, without considering the benefits (regardless of the total energy consumed by coal in the gasification process and pollution emissions caused by the consumption of resources, the total amount of pollution ), Otherwise there will be consumption, high operating costs, pollution and pollution, the user negative benefits.
Gasification of carbon molecules to achieve the source of prevention and control, reducing elements, the efficient use of coal resources goal.
I. Overview
At present, climate change, environmental degradation and scarcity of resources have become a worldwide problem. Energy-saving emission reduction, climate change, but also has become a hot spot from the technology to international politics and focus.
The current energy situation in our country is that coal is less oil-less and less fuel-poor. It is a major energy-producing and consuming country dominated by coal. Coal consumption accounts for half of the world total, and more than 80% still use the traditional direct combustion methods (grate combustion, fluidized bed combustion, pulverized coal combustion, briquette and coal water slurry combustion, etc.). Environmental Science believes that this direct way of burning coal is currently a major source of pollution in China.
However, this kind of direct coal burning method has to be adopted by the domestic and foreign trades in the future. For example, the International Energy Agency 2021-2050 efficient low-emission coal-fired power generation technology line, still using CFB boiler and pulverized coal boiler direct combustion technology. This is mainly not from the basic theory that: direct combustion method, the coal is the solid phase material and pyrolysis gas phase mixed together in the same furnace for combustion, contrary to the gas-solid two-phase combustion The characteristics of the law. In order to complete this direct combustion, high excess air (α≥1.2) is used. As a result, the loss of one another results in the massive production of oxygen-related toxic and harmful pollutants (SOx, NOx, etc.) Then manage. This not only complicated process, but also high cost, and even caused "pollution and pollution" unstable emissions, pollution control difficult to reach the standard.
Therefore, scientifically developing advanced and practical coal combustion technologies, especially gasification and combustion technologies that prevent pollution and prevent environmental pollution, is an urgent need for social development at present and is of great significance.
Second, carbon molecular vapor combustion technology
We break through the traditional cognition and deeply explored the gasification, combustion and transformation rules of coal at the molecular level. We invented the scientific mechanism of carbon molecular gasification and combustion, first, low-cost and high-intensity manufacturing of clean gas, and then using low excess air (α Close to 1) Burning. Achieved the source of pollution prevention, environmental protection and energy saving, efficient and clean use of coal goal. From a fundamental solution to the direct coal-fired technology pollution, low efficiency and other problems.
Third, the main indicators of carbon molecular gasification combustion technology
1, simple process, safe operation, high gas production (atmospheric gasification strength is 1000 ~ 2000kg / m2? H, than the same technology to improve more than 5 times), can be large;
2, Coal gasification cost is low, power consumption of operation is over 30% smaller than that of chain combustion furnace, gasification power consumption of the same production unit is 1% of domestic and foreign fluidized bed and fluidized bed.
3, the gasifier is smaller than the steel consumption, more than 30% reduction of steel consumption than the same production technology;
4, with the quality of coal, the same technology, gasification reaction fast and complete, high carbon conversion rate, gas calorific value increased by 10%; slag carbon content decreased by 10%;
5, wide adaptability of fuel, can gasification and combustion of various coal, coke, coal gangue, biomass and other organic matter (waste);
6, molecular gasifier in the anaerobic conditions Ca / S close to 1 sulfur, can be designed nearly 100% sulfur removal rate;
7, high-temperature gas, the use of low excess air coefficient (α close to 1) combustion, chemical incomplete combustion zero, cleaner emissions; from the source of oxygen-related toxic and hazardous substances SOx, NOx and other production;
8, more significant meaning is: carbon molecular gasification combustion than direct coal to save more than 10% of clean air.
Fourth, carbon molecular vaporization technology market prospects and benefits
According to the scientific principle of the present invention, we can develop and form the following internationally advanced level:
1. Coal molecular gasification combustion (heating, power generation; comprehensive generation of oil, electricity, gas, etc.) new technologies and devices;
2. Coal molecular gasification of high quality gas to replace coke smelting new technologies and devices;
3. High efficiency coal chemical molecular gasification of new technologies and devices;
4. Garbage gasification combustion (heating, power generation) new technologies and devices;
5. Efficient biomass gasification combustion (heating, power generation) new technologies and devices.
The combined benefits of these industries are:
1, to replace oil, electricity, natural gas, coke, fuel costs can be reduced by 50% or more;
2, alternative fluidized bed, coal, coal-water slurry combustion, fuel processing and system saving more than 50%;
3, alternative grate layer burning
â— burning system saving more than 20%; running coal-saving more than 10%
â— 80% fire sealing coal, more than 80% reduction of the most serious low-temperature flaming coal pollution.
4, carbonaceous coal-fired boiler gasification combustion can change the traditional way of direct coal, coal gasification combustion boilers (to fuel, gas stove efficient and clean indicators) energy saving (efficiency of about 8%), and operating costs Very low, the combustion system saves more than 30% of the power in the chain furnace; it is 50% of the fluidised bed or pulverized coal boiler. Therefore, it can completely replace the existing domestic and foreign various kinds of coal-fired boilers (including power plant large-scale pulverized coal boilers) and oil and gas boilers.
5, the manufacture of chemical raw gas, used in the transformation and expansion of the gas furnace in the fertilizer plant, the existing gap gas furnace to achieve continuous air + steam gas, and increase production 3 times (gasification intensity increased 3 times). Its benefits are:
â— with the same quality of coal gas composition increased by more than 10%;
â— with the same quality of coal slag reduction of carbon content of more than 10%;
â— with the same quality of raw materials to save coal (anthracite or coke) 100 kg / ton of ammonia;
â— with the same quality of coal energy-saving 80 degrees / ton ammonia;
â— Save steam 100 kg / ton ammonia with the process.
6, low-cost manufacturing high-quality reducing gas, direct reduction of sponge iron; instead of blast furnace injection of pulverized coal (the invention gas than coal pulverizing and blowing powder power consumption reduced by 50%, but also eliminates the need to replace the annual roll Expensive), clean (gas without slag) smelting steel.
Since the present invention has the above significant comprehensive advantages, it can be widely promoted in China and widely promoted abroad. Almost all coal-producing countries have a market where almost all fuel is needed.
Fifth, application promotion risk analysis
We have adopted the present invention to develop domestic boilers suitable for all kinds of coal in our country and have popularized and applied thousands of sets nationwide. We have also successfully transformed Φ1.5m-Φ3.6m industrial gas furnaces to achieve both increased gas production 30% increase gas heat value at the same time 10% of the target; research and development of tens of thousands of M3 / H molecular furnace has started a continuous operation for 36 months (without precedent). Products have been widely used in building materials, metallurgy, machinery and chemical industry heating, sintering furnace. These large, long-term practical use has proved that the carbon molecular vaporization combustion technology completely adapts to the characteristics of Chinese coal with more ash and higher melting point. Expert identification: The comprehensive index of the present invention is leading in the world. Has listed as national energy-saving scientific and technological achievements; national environmental protection best practical technology and world Chinese major energy-saving scientific and technological achievements of the promotion project; won the China Green Technology Award and the original machine ring Ministry of Industry Technology Progress Award. The world famous scientist Shen Hong operation inscription: "a good creation, is to promote."
In conclusion, there is no technical risk to industrialization and widespread use of carbon molecular gasification combustion technology.
Sixth, the application examples and benefits of the present invention:
1, 15T / h chain boiler, using carbon molecular gasification combustion:
◠Environmental compliance (gas furnace hypoxia sulfur; α close to 1 combustion), reduce the cost of governance more than 80%;
◠The energy saving of the combustion system is over 30% (α is reduced from 1.5 to 1.05; the pressure of gas combustion is reduced by 50%); coal saving is 10% (q2, 3 and 4 are greatly reduced);
2,35 T / h fluidized bed boiler, carbon molecular vaporization combustion:
◠Environmental compliance (gas furnace hypoxia sulfur; α close to 1 combustion), reduce the cost of governance more than 80%;
◠The combustion system saves more than 50% of electricity (α is reduced from 1.2 to 1.05; the pressure of coal combustion winds is reduced by 75%); and coal saving is 8% (q2, 3 and 4 are greatly reduced). Reconstruction fee 9 months to recover.
3,1000 T / h pulverized coal boilers, the use of molecular carbon gas combustion:
◠The cost of power generation in coal is reduced by more than 50% (α is reduced from 1.2 to 1.05; the burning pressure of gas is reduced by 70%; the power consumption of milling is reduced by 60%);
◠Flue gas discharge standards (gas furnace hypoxia sulfur, high sulfur removal efficiency, less resource consumption; hot gas α close to a combustion, can prevent and control the production of oxygen-related toxic gases such as SOx, NOx, etc., to achieve the coal industry Prevention and control of pollution from the source and the element level completely changed the passive situation that desulfurization, denitration and dust removal of the power generation boiler had to increase the cost), the cost of management was reduced by more than 80%, and the social and economic benefits were huge.
Welcome to use this technology!
Attachment:
1, the theoretical basis of the present invention has been achieved
2, the present invention has been widely applied practical results
China Chemical Raw Materials,Propionyl Chloride Cas 79-03-8 supplier & manufacturer, offer low price, high quality Zinc Bromide Cas 7699-45-8,Propionyl Chloride 79-03-8, etc.
Chemical Raw Materials,Propionyl Chloride Cas 79-03-8,Zinc Bromide Cas 7699-45-8,Propionyl Chloride 79-03-8
Jiangsu Kaihuida New Material Technology Co., Ltd , https://www.khdchemical.com