Regenerating device for ineffective natural gas desulfurization solution

Abstract

The invention discloses a regenerating device for an ineffective natural gas desulfurization solution. The regenerating device comprises an ineffective natural gas delivering pipeline of which the input end is connected to the output end of a solution regenerating pump; the output end of the ineffective natural gas delivering pipeline is connected to a liquid inlet of a solid impurity removing unit, a liquid inlet of a solution decolorizing unit, a liquid inlet of a thermostable salt removing unit and a liquid inlet of an organic impurity removing unit; for liquid outlets of the solid impurity removing unit, the solution decolorizing unit, the thermostable salt removing unit and the organic impurity removing unit, the liquid outlet of the former unit is communicated with the liquid inlet of the latter unit. According to the regenerating device disclosed by the invention, the problems that solid impurity particles cannot be thoroughly removed, decolorized activated carbon is easily broken to form new impurities, organic impurities in the solution cannot be removed and the like in the regenerating process of an existing ineffective natural gas desulfurization solution are solved; meanwhile, four units are connected in parallel by the ineffective natural gas delivering pipeline; corresponding treatment units can be selected according to actual conditions of the desulfurization solution, so that treatment materials are saved and the process progress is accelerated.

Description

technical field [0001] The invention belongs to the technical field of natural gas desulfurization and purification, and in particular relates to an invalid natural gas desulfurization solution regeneration device. Background technique [0002] H in natural gas 2 S, CO 2 Such acidic components are not only easy to dissolve in liquid water and form acid liquid, leading to severe corrosion of metal equipment, at the same time, the presence of these acidic components can also cause hydrogen embrittlement and sulfide stress cracking of steel. When the H in raw natural gas 2 S, CO 2 When the content of acidic components exceeds the quality requirements of commercial natural gas, appropriate methods must be used to carry out necessary desulfurization treatment to make it fully meet the standard before it can be exported. [0003] Natural gas desulfurization methods generally include batch method, chemical absorption method, physical absorption method, combined absorption metho...

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Problems solved by technology

[0008] Aiming at the defects in the above-mentioned prior art, the present invention provides a device for regenerating an invalid natural gas desulfurization solution, the purpose of which is to convert the invalid natural gas desulfurization solution through a solid impurity removal unit, a solution decolorization unit, a thermally stable salt removal unit and The organic impurity removal unit is regenerated to meet the standard of recycling, which solves the problem of incomplete removal of solid impurity particles in the regeneration process of the existing invalid natural gas desulfurization solution, decolorization activated carbon is easily broken to form new impurities and cannot be removed There are many problems such as organic impurities in the solution. At the same time, the four units are connected in parallel through the failed natural gas transmission pipeline. The corresponding processing unit can be selected according to the actual situation of the desulfurization solution to save processing materials and speed up the process.

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