Tar slag machining process and system

Abstract

The invention provides a tar slag machining process and system, and belongs to a tar slag cleaning machining utilization process and system. According to the process, after tar slag is added to crushed coal according to proportion, the tar slag and the crushed coal are fully mixed in a double-spiral mixer and then sent to multi-stage spiral dry distillation and conveying integrated machines to be subjected to dry distillation devolatilization, pitch prepared by coal tar in a distillation mode is added into a one-level spiral dry distillation and conveying machine of the multi-stage spiral dry distillation and conveying integrated machines, three materials are fully distillated and mixed through the dry distillation and conveying machines, and a product model block formed by final mixed materials for gas making of a gas station is obtained. The system includes the four steps that 1, binder pitch is obtained through tar machining; 2, fine coal is crushed to be power coal; 3, tar slag fine coal is mixed and subjected to distillation devolatilization; 4, the binder pitch and the tar slag coal generated after dry distillation is conducted are mixed to form and manufacture the gasified model block.

Description

technical field [0001] The invention relates to the field of tar residue processing and comprehensive utilization, in particular to a tar residue processing process and system suitable for gasification tar residue and coal tar processing and utilization. technical background [0002] Energy and the environment are important guarantees for the sustainable development of the national economy and society. In 2020, coal will still account for about 60% of the national energy mix. However, in the current coal consumption industry, due to the backward process equipment in the process of coal gasification and coking, the conversion and utilization rate of coal is relatively low. This part of the coal that cannot be fully utilized in the process of gasification and coking is transformed into toxic and seriously polluting Environmental tar residue that is difficult to clean and utilize. A large amount of tar residue is produced in my country every year, and the coking industry prod...

AI Technical Summary

Problems solved by technology

However, the tar residue has accumulated for a long time, and the storage capacity is insufficient. The surrounding environment will be seriously affected by the tar residue pool, which does not meet the requirements for the environmental protection of tar residue.

[0004] The current utilization of tar slag is as follows: 1) The tar slag is pulverized and added to the furnace belt for combustion. This process has not been cleaned before combustion, and the combustion is incomplete, and the pollution is serious; 2) The tar slag and asphalt are mixed back for coking. Coal coking, the process equipment is complicated and will cause unstable coke quality; 3) Tar residue or tar residue fine-grained coal forming gasification block

None of the above tar residue utilization processes can completely clean and utilize tar residue

The disadvantages of these processes and systems are complex processes, high equipment investment, high labor intensity, poor effect, and secondary pollution.

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