阅读说明：本技术 一种将煤转化为馏出油的方法 (Method for converting coal into distillate oil ) 是由 魏廷锦 于 2019-11-15 设计创作，主要内容包括：本发明属于将煤资源转化为馏出油形式进而进行高效利用的领域,提出了一种将煤转化为馏出油的方法,具体包括将精细研磨煤与油混合,在高温高压下将其引入反应器中,在催化剂作用下发生焦化反应,产生馏出油和残基固体,其中,馏出油包括重质馏出油和中质馏出油；本发明的目的是提高能源利用率,高效分离出馏出油,降低消耗和生产成本,减少污染物的排出。(The invention belongs to the field of converting coal resources into distillate oil form for efficient utilization, and provides a method for converting coal into distillate oil, which specifically comprises the steps of mixing fine ground coal and oil, introducing the mixture into a reactor at high temperature and high pressure, and carrying out coking reaction under the action of a catalyst to generate distillate oil and residue solid, wherein the distillate oil comprises heavy distillate oil and medium distillate oil; the invention aims to improve the energy utilization rate, efficiently separate distillate oil, reduce consumption and production cost and reduce discharge of pollutants.)

1. A method of converting coal to distillate oil, said coal being finely ground coal; the method is characterized in that: mixing the finely ground coal with oil, introducing the mixture into a reactor at high temperature and high pressure, and carrying out coking reaction under the action of a catalyst to produce distillate oil and residue solids, wherein the distillate oil comprises heavy distillate oil and medium distillate oil.

2. The method of converting coal into distillate oil according to claim 1, wherein: the coking reaction is carried out in the presence of hydrogen.

3. The method of converting coal into distillate oil according to claim 2, wherein: the temperature in the coking reaction is 430-485 ℃, and the pressure is 100-300 pa.

4. The method of converting coal into distillate oil according to claim 2, wherein: the coking reaction temperature is 450 ℃ and the pressure is 200 pa.

5. The method of converting coal into distillate oil according to claim 3, wherein: the distillate oil is used as a solvent for the preparation of the coal suspension.

6. The method of converting coal into distillate oil according to claim 5, wherein: the residue solid produced is then passed into the reactor as a binder during the coking reaction.

Technical Field

The invention belongs to the field of converting coal resources into distillate oil and further efficiently utilizing the distillate oil, and provides a method for converting coal into distillate oil.

Background

Along with the rapid development of the economy of China, the domestic energy consumption demand is more and more, and because the dependence degree of China on the import of petroleum is larger, therefore, factors such as international oil price rising and changes of the middle east government bureau can form potential harm to the petroleum energy safety of China, meanwhile, because the petroleum has the characteristics of good flowing property, convenient exploitation, transportation and practicability, the increase of the domestic petroleum consumption greatly exceeds the increase of the petroleum yield in recent years, coal is used as fossil energy similar to petroleum, the final generation is different from petroleum only due to the difference of ancient plants and geological conditions, and the exploitation amount and the supply years of coal in China are far greater than those of petroleum in view of the existing data, so that people consider converting coal into petroleum or other valuable fuels to meet the domestic requirements for corresponding resources, and the conversion mode is feasible in view of economic benefit.

At present, for the conversion of coal resources into distillate oil in China, basically only the process used is to add coal into a reaction zone of hydrogen and a catalyst, produce hydrogenated coal under the reaction of the reaction zone, then treat the produced hydrogenated coal through the existing process, pressurize and heat the coal suspended in oil and the hydrogen, and under the reaction conditions, distillate oil can be obtained. However, this method requires a large amount of energy at high temperature and high pressure, and thus it causes a large economic burden, which increases the refining cost, and in this operation, carbon generates a large amount of gas during decomposition, which results in a very high consumption of hydrogen during the reaction. The object of the present invention is to develop a process which eliminates the difficulties mentioned and which economically enables the production of valuable hydrocarbon fractions from coal, reduces consumption and production costs and reduces pollutant emissions.

Disclosure of Invention

In order to solve the problems, improve the energy utilization rate, efficiently separate distillate oil products and reduce the discharge of pollutants, the invention provides a novel method for converting coal into distillate oil.

The specific technical scheme is as follows:

a method of converting coal to distillate oil, said coal being finely ground coal; the method is characterized in that: mixing the finely ground coal with oil, introducing the mixture into a reactor at high temperature and high pressure, and carrying out coking reaction under the action of a catalyst to produce distillate oil and residue solids, wherein the distillate oil comprises heavy distillate oil and medium distillate oil.

Preferably, the coking reaction is carried out in the presence of hydrogen.

Preferably, the coking reaction temperature is 430-485 ℃, and the pressure is 100-300 pa.

Preferably, the coking reaction is at a temperature of 450 ℃ and a pressure of 200 pa.

Preferably, the distillate oil is used as a solvent for the preparation of the coal suspension.

Preferably, the residue solids produced are passed into the reactor again to act as a binder during the coking reaction.

The invention has the advantages that:

the method for converting coal into distillate oil provided by the invention is simple in process, easy to operate and suitable for large-area popularization and use. The process economically produces valuable hydrocarbon fractions from coal, reduces consumption and production costs, and reduces pollutant emissions.

Detailed Description