What is the immaturity of coal direct liquefaction to oil technology?

The main indicators of evaluating a liquid Li Honghua process Try to analyze what measures can be taken to reduce energy consumption in the air liquefaction with turbulenceNatural gas liquefaction itself is to make gaseous natural gas into liquid through pressurization, if the pressure of the raw gas increases, then the compressor of the liquefaction equipment can reduce the work, of course, it reduces the energy consumption. If the natural gas is extracted directly from the gas well, increasing the gas outlet pressure of the gas well will indeed reduce energy consumption, but the corresponding pressure-resistant equipment and pipelines may need to be redesigned and installed.

A major breakthrough has been made in the coal blending liquefaction test technology independently developed by the Coal Conversion Center of Gansu Coalfield Geology Research Institute. Because the oil yield of coal blending liquefaction technology is higher than that of single coal liquefaction, it is estimated that the cost of gasoline and diesel produced by this technology is about 1500 yuan tons, and the economic and social benefits are significant. Previously, only one type of coal was used for coal liquefaction processing, and the Gansu Coal Conversion Center used coal blending for the first time in the world, and the coal with different trace components in Gansu Dayou and Tianzhu was used as 6:

4 ratio, set temperature of 440, time of 60 seconds for reaction, so called "coal blending liquefaction". The test proves that this technology can achieve a coal conversion rate and increase the oil yield to, and the amount of ordinary catalyst used is less than that of single coal liquefaction, and the reaction conditions are relatively mild.

The direct liquefaction technology of high-sulfur coal blending in the central region of Gansu Province has been studied by the Gansu Institute of Coalfield Geology, and has reached the international advanced level through expert appraisal. At the same time, Tengda Northwest Ferroalloy Company and Gansu Coalfield Geology Research Institute also signed an investment agreement, making a substantial step forward in the industrialization of "coal-to-liquid". In order to provide resource guarantee for the upgrading of "coal-to-liquid" products in Gansu Province, the province and the Gansu Institute of Coalfield Geology have carried out preliminary research and development of "coal-to-liquid" industrialization on high-sulfur coal in the central region of the province.

According to the determination of experts, the oil yield can generally be achieved, such as the oil yield of coal blending. After the project is put into practice, it will accumulate valuable experience for the coal conversion and the extension of the industrial chain in Huating, Jingyuan, Yaojie and other mining areas in Gansu Province.

Let's start with the issue of direct liquefaction. 1 barrel of oil 200 liters, about 150 kg, 150,000 grams. If gasoline is calculated as C9 hydrocarbon, the molecular weight of C9H20 is 128, so that 200 liters of oil need carbon resources 150 * 108 128 = 127 kg, which is equivalent to about 127 kg of coal (because it is necessary to deduct the water, sulfur, ash and volatile content in the coal, the fixed carbon that can be used is half), and the coal ** is calculated at 400 yuan, which is about 100 yuan; Hydrogen resources are needed for 150 * 20 128 = 24 kg, and these hydrogen resources should be taken from organic solvents, if calculated by toluene, toluene is needed for 92 * 24 8 = 276 kg, tons of toluene ** is 6000 yuan, 24 kg needs about 276 * 6000 1000 = 1650 yuan (toluene effect is not good, but ** is relatively cheap, if you use good effect of decahydronaphthalene, ** is too high, generally 500 ml on hundreds of yuan).

Considering that the carbon resources and recycling factors in toluene can also be used, it will be at least about 1,000 yuan. In this way, the cost of raw materials alone needs 1,100 yuan barrels, and if you consider factors such as high temperature and high pressure equipment, energy consumption, catalyst cost, separation and purification, the cost of each barrel of oil is at least nearly 1,500 yuan, or about 180 US dollars

Then calculate the indirect liquefaction cost problem. A barrel of oil 200 liters, 150 kilograms, the need for syngas (obtained from coal and water at high temperature, that is, coal to prepare water gas) is 1000 cubic meters (from the principle of synthesis, with a cubic meter of synthetic bucket gas to get 150 grams of empty buried shed oil, the limit is 208 grams, 150 grams is already very high), and the cost of syngas is yuan cubic meters. In this way, the cost of each barrel of oil raw materials is 1,500 yuan, which is 180$.

To sum up, the first process is mainly due to the fact that organic solvents are expensive and the reaction conditions are harsh. The second process depends on the synthesis process and the efficient catalyst. For the time being, neither can be industrialized.

Of course, for an enterprise like Shenhua, the coal resources belong to the state, don't think about it, that's okay.

Coal is China's largest energy source, accounting for more than 70% of the country's total energy production and consumption China is the country with the largest coal production in the world Shanxi, Inner Mongolia and Shaanxi are China's main coal-producing areas From the perspective of resources, China's "coal" to "oil" project should be deployed in Shanxi, Inner Mongolia, Shaanxi and other places

Therefore, a