Ammonia desulfurization technology and device utilizing high potential energy

Abstract

The invention belongs to the field of environmental protection equipment, which relates to an ammonia desulfurization technology and a device utilizing high potential energy. The device comprises a desulfurizing tower, a concentrated crystallizing pool, an oxidation communication device, a low-level circulation pump, a high-level circulation pump, a crystal pulp pump and a centrifugal drying system which are positioned outside the tower; the desulfurizing tower is divided into an upper layer section and a lower layer section, and a gas cap through which only flue gas can pass is arranged between the upper layer section and the lower layer section; the lower layer section of the desulfurizing tower and the oxidation communication device are both provided with an oxidation gas distributor and an oxidation gas deflector; and spray heads are 2 to 4 layers. Under the precondition that normal desulfurization efficiency is ensured, the invention not only saves the investment but also reduces the running cost.

Description

Technical field [0001] The invention belongs to the field of environmental protection equipment and relates to an ammonia method desulfurization process utilizing high potential energy, and is especially suitable for desulfurization in thermal power plants or desulfurization where the original limestone method is changed to ammonia method. Background technique [0002] At present, the known ammonia-based desulfurization device consists of a desulfurization tower, a primary circulation pump, a secondary circulation pump, a circulation tank, and post-treatment facilities, and the absorption liquid is ammonia solution. Ammonia desulfurization can achieve no waste residue and waste liquid discharge, and the product ammonium sulfate can be used. In order to save energy, the desulfurization tower is usually divided into upper, middle and lower layers. The upper layer is mainly to absorb and purify sulfur dioxide, and the purpose of the middle layer is to initially absorb sulfur di...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of the existing technology, effectively utilize the energy of the high-level absorption liquid, and simultaneously solve the problems of large investment, high power consumption, and poor oxidation effect of the existing equipment, the present invention provides an ammonia desulfurization process and device using high-level potential energy, Reduce power consumption and equipment costs, improve the oxidation effect of the absorption liquid

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