Device and process for preparing acid through desulfuration of sulfur-containing natural gas single well

Abstract

The invention belongs to the application field of the desulfuration technique of a sulfur-containing natural gas single well and particularly relates to a device and process for preparing acid throughthe desulfuration of the sulfur-containing natural gas single well. The device comprises an amine-method desulfuration and decarburization system, a wet-method acid preparation system and a waste heat power generation system. According to the process provided by the invention, the problems that the desulfuration construction period of a Claus process in the development process of the sulfur-containing natural gas single well, and the tail gas cannot easily reach the standard are solved, and the problems that a large number of wastewater, waste residue, waste gas and the like are produced in wet-method desulfuration (Lo-Cat process) are solved; and by generating power through the heat of a waste heat boiler, the operation cost of the system is greatly lowered, the security risk is reduced,and the problems of environmental pollution and the like are completely eradicated.

Description

technical field [0001] The invention belongs to the application field of single-well desulfurization technology of sulfur-containing natural gas, and in particular relates to a device and process for single-well desulfurization of sulfur-containing natural gas to produce acid. Background technique [0002] Natural gas is naturally generated in the underground void layer, and is a mixed gas composed of hydrocarbon gases such as methane, ethane, propane and other low-molecular saturated hydrocarbons and a small amount of non-hydrocarbon gases such as hydrogen sulfide, carbon dioxide and nitrogen. As a clean, efficient and high-quality gas energy and chemical raw material, it is widely used in many fields such as city gas, natural gas liquefaction, natural gas power generation and natural gas chemical industry. With the "Sichuan-East Gas Transmission" pipeline and the "Second West-East Gas Transmission Line" fully put into operation, my country has basically formed a national n...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a single-well desulfurization method for sour natural gas in view of the difficulties in acid gas treatment in the existing sour natural gas single well mining and purification process and the environmental protection problems such as waste residue, waste water and waste gas discharge in the treatment process. The device and process of acid production, the device can reduce energy consumption as much as possible under the premise of ensuring the purification and desulfurization of natural gas, and use the desulfurization and acid production process of the device to realize the recovery and reuse of waste heat power generation, reduce operating energy consumption, and solve environmental pollution, etc.

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