Energy-saving type synthesis ammonia semi-oxygen-enriched gas making device and process

Abstract

The invention provides an energy-saving type synthesis ammonia semi-oxygen-enriched gas making device and process. The device comprises a gas cabinet, a PSA (pressure swing adsorption) nitrogen generation system and an air mixing cabinet, wherein the air mixing cabinet wraps a gas making coal-gas pipe; nitrogen and oxygen-enriched air which are separated by the PSA nitrogen generation system are recycled separately; a gas making air blower is connected between the PSA nitrogen generation system and the air mixing cabinet through a pipe; the oxygen-enriched air and gas making blowing air are mixed in the air mixing cabinet; the PSA nitrogen generation system is further connected with the gas cabinet through a nitrogen delivering pipe; the air mixing cabinet is connected with the gas cabinetthrough a pipe; and the gas making coal-gas pipe is connected with a waste gas, waste water and solid waste furnace. The energy-saving type synthesis ammonia semi-oxygen-enriched gas making device and process have the beneficial effects that investments on equipment are less, the functional degree of the nitrogen generation system is high, and the safety factor is high.

Description

technical field [0001] The invention relates to the technical field of chemical production equipment and methods, in particular to an energy-saving synthetic ammonia semi-oxygen-enriched gas production device and process. Background technique [0002] The development of coal gasification process has a history of more than 100 years, and there are more than 100 gasification methods developed so far. According to the operation and contact mode of coal in the gasification furnace, it can be mainly divided into 1. Moving bed gasification (fixed bed gasification) bed), 2. Fluidized bed gasification, 3. Entrained bed gasification. Among them, moving bed gasification mainly includes Lurgi gasification technology, fixed bed intermittent gasification technology, oxygen-enriched continuous gasification technology, etc. [0003] Today, the chemical fertilizer industry focuses on the pursuit of high output and low consumption. The operating concept of the gas generation system has chan...

AI Technical Summary

Problems solved by technology

However, since this section is already at the later stage of the synthetic ammonia production process, the gas pressure reaches the maximum. At this time, adding nitrogen to the system requires an independent compressor, which increases equipment investment, and the same total gas volume is boosted to a certain pressure. Gas mixing and separation in the early stage The power consumption required for separate pressurization in the later stage will not be reduced

In addition, it is difficult to achieve continuous and stable control of two sets of high-pressure systems in the production of uniformly mixed nitrogen and hydrogen under a certain pressure, so the hydrogen-nitrogen ratio of the system fluctuates greatly, reducing the production efficiency of the rectification system and increasing the unit consumption

[0009] Oxygen-enriched continuous gas production requires the construction of an air separation unit, which requires high investment, and the cost of oxygen production also increases the cost of the final product

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