Process of co-producing acetylene and synthetic gas with petroleum coke and low ash coal

Abstract

The process of co-producing acetylene and synthetic gas includes the following steps: mixing and drying petroleum coke and lime powder and spraying to gasifying furnace together with oxygen for partial oxidation reaction to produce molten calcium carbide flowing to back reaction area of the gasifying furnace for further reaction to produce synthetic gas; exhausting the synthetic gas through the pellet filler layer in the upper part of the gasifying furnace, dedusting in the cyclonic separator and ceramic tube filter and recovering afterheat in the afterheat recovering system to generate high and medium pressure steam; chilling the reacted molten calcium carbide with the chilling agent of arene-rich wax oil in the chilling trough below the molten bath to form calcium carbide oil slurry; reducing pressure and temperature of calcium carbide oil slurry and reacting with water in the acetylene generator to produce acetylene and calcium hydroxide.

Description

technical field [0001] The invention relates to a method for producing acetylene and synthesis gas, belonging to the technical field of chemical engineering. Background technique [0002] With the continuous and rapid development of my country's national economy, my country's refining and chemical enterprises have deepened the crude oil processing depth in order to meet the raw material demand of transportation fuel, ethylene and chemical fiber, so as to increase the yield of light oil. By the end of 2004, my country had built a heavy oil catalytic cracking unit The capacity has exceeded 100 million tons per year, and the capacity of delayed coking units has exceeded 37 million tons per year. In the same year, the output of petroleum coke reached 7.35 million tons. [0003] According to the forecast of relevant departments, my country's petroleum coke output will soon exceed 10 million tons, many of which are sulfur-containing and high-sulfur petroleum coke. With increasing...

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Problems solved by technology

However, the structure of the gasifier is relatively complicated, the investment cost of infrastructure is relatively high, and the patent royalties demanded by foreign companies are quite high

[0006] According to the analysis, according to the current status of the introduced gasification technology, if no improvement is made, it will be difficult to give full play to the advantages of low ash content of petroleum coke to reduce the cost of synthesis gas and the burden of environmental protection, and it is even more difficult to fully utilize the high reaction of pure oxygen gasification petroleum coke Temperature heat energy to produce high value-added products

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