Radial sleeve type cooling methanation furnace

Abstract

The invention relates to a radial sleeve type cooling methanation furnace, which comprises an outer cylinder of the methanation furnace, an upper seal head and a lower bulb. One side of the lower bulb is provided with a feed gas inlet, the other side of the lower bulb is provided with a synthesis gas outlet pipe, the inner wall of the furnace and a catalyst frame enclose an annular space, the feed gas enters the annular space through a gas inlet cavity consisting of the lower bulb, the upper seal end is provided with a catalyst filling port, catalyst is added into the furnace through the catalyst filling port, the catalyst frame is supported on catalyst frame supports and provided with a catalyst frame air vent, the feed gas penetrates through the air vent to contact with the catalyst and reacts with the catalyst, a central gas collecting pipe is arranged in the inner centre of the furnace, sleeves which are axially arranged along the outer cylinder are arranged in the catalyst frame of the outer cylinder, and the sleeves radially covers an internal space defined by the catalyst frame and the central gas collecting pipe. Synthesis gas passes through an air vent arranged on the central gas collecting pipe to enter the gas collecting pipe, passes through an annular space enclosed by a discharging pipe and the synthesis gas outlet pipe, and is finally exhausted through a synthesis gas outlet. Cooling water inflows from a cooling water inlet and enters inner pipes by mean of uniform distribution of a liquid distributor, then baffles to the outer sleeves, absorbs reaction heat to form high-pressure steam, outflows from the outer sleeves and the inner pipes, and finally outflows from a steam-liquid outlet.

Description

technical field [0001] The invention relates to a methanation furnace, which is particularly suitable for the synthetic natural gas process in the combined production of alkane and ammonia in the field of coal chemical industry, and is a novel, high-efficiency, uniform temperature methanation furnace. Background technique [0002] my country's energy characteristics are "lack of oil, less gas, and rich coal", with relatively abundant coal resources and relatively few natural gas resources. With the development of China's economy, the industrial consumption of natural gas, especially civil consumption, has increased significantly, and the current output can no longer meet people's growing production and living needs. Due to the high calorific value of natural gas, the advantages of easy transportation and low transportation cost, synthetic natural gas technology has broad development prospects and will be widely used in people's production and daily life. The core equipment ...

AI Technical Summary

Problems solved by technology

[0010] Therefore, the object of the present invention is to provide a radial reaction homogeneous methanation furnace with double-tube heat exchange, and the present invention can solve the problems of equipment material selection, catalyst failure, and equipment enlargement caused by high temperature.

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