Flue gas desulfurizing device adopting ammonia-ammonium sulfite method

A technology of ammonium sulfite method and desulfurization device, which is applied in the direction of ammonium sulfite, separation methods, chemical instruments and methods, etc., can solve the problems of large energy consumption and cost increase, and achieve high desulfurization efficiency, low energy consumption, The effect of excellent quality of by-products

Inactive Publication Date: 2013-04-10
陈有根
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method needs to heat the solution, which consumes a lot of energ

Method used

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  • Flue gas desulfurizing device adopting ammonia-ammonium sulfite method
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  • Flue gas desulfurizing device adopting ammonia-ammonium sulfite method

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Experimental program
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Embodiment I

[0035] see figure 1System block diagram of the system, the ammonia-ammonium sulfite flue gas desulfurization device of the present invention mainly includes a desulfurization absorption system 1, an ammonium sulfite crystallization system 2 connected with the desulfurization absorption system 1, a process water system 3 and an absorbent system 4, And the emergency treatment system 7 of the desulfurization unit. The flue gas enters the desulfurization absorption system, and after desulfurization absorption, the exhaust gas is purified and discharged through the chimney. The absorption liquid flowing out of the desulfurization absorption system 1, after dust removal by the smoke filter system 5, enters the ammonium sulfite crystallization system 2 for crystallization, and finally is dried and packaged System 6 obtains ammonium sulfite finished product.

[0036] like figure 2 Shown is the process flow diagram of embodiment 1 of the present invention, the desulfurization absorp...

Embodiment II

[0047] In the second embodiment of the present invention, except that the desulfurization absorption system of the ammonia-ammonium sulfite flue gas desulfurization device is different from that of Example 1, all the other structures are the same.

[0048] The absorption tower of the desulfurization absorption system in this embodiment adopts the structure of single tower and double sections. like Figure 5 As shown, it is an absorption tower with a single-tower double-section structure. Its upper section 11' and lower section 12' are separated by a partition 16 located above the flue gas inlet, and a circular pipe 17 passing through the upper and lower sections of the tower is arranged on the partition. A shower-proof cover 18 is also provided above the circular duct 17 .

[0049] An absorption liquid storage tank 121' is arranged at the bottom of the lower section 12' of the tower, and the upper section 11' of the single tower is connected with the absorption liquid storage...

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Abstract

The invention belongs to the technical field of flue gas desulfurization, and particularly relates to a flue gas desulfurizing device adopting an ammonia-ammonium sulfite method for recycling sulfur resources. The flue gas desulfurizing device comprises a desulfurization absorption system, an ammonium sulfite crystallization system, a process water system, an absorbent system and an emergency treatment system of the desulfurizing device, wherein the ammonium sulfite crystallization system, the process water system and the absorbent system are connected with the desulfurization absorption system. The flue gas desulfurizing device is characterized in that the main body of the desulfurization absorption system is an absorption tower having a double-tower structure or a single-tower double-section structure; a spray device is arranged in the tower; a collision type demister and a desulfurization tail gas purifying device are arranged in sequence above the spray device; an absorption liquid storing groove is formed at the bottom of the tower; the upper section of a single tower is connected with a circulating absorption liquid storing groove arranged outside the tower through a pipeline; and the ammonium sulfite crystallization system comprises a crystallizer provided with a jacket of cooling water. Due to the adoption of the flue gas desulfurizing device, the formation of an aerosol can be suppressed effectively, and secondary pollution is prevented; and compared with the conventional evaporative crystallization, the flue gas desulfurizing device has the advantage that a neutralizing condensation and crystallization way is adopted for ammonium sulfite serving as a side product, so that the energy consumption can be lowered.

Description

technical field [0001] The invention belongs to the technical field of flue gas desulfurization, in particular to technical equipment for flue gas desulfurization, in particular to an ammonia-ammonium sulfite method flue gas desulfurization device for recycling sulfur resources. Background technique [0002] Generally, the ammonia flue gas desulfurization process can be divided into ammonia-ammonium sulfate method, ammonia-acid method, ammonia-ammonium sulfite method, etc. according to the types of by-products produced. The ammonia-ammonium sulfate method produces ammonium sulfate as a by-product. During the process, an oxidation fan needs to be installed to oxidize ammonium sulfite into ammonium sulfate, which consumes a lot of energy. However, the market for ammonium sulfate as agricultural fertilizer is limited and its value is not high. The by-products of the ammonia-acid process are sulfuric acid and ammonium sulfate, and the market for dilute sulfuric acid is also limi...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/96B01D53/50C01C1/22
Inventor 陈有根
Owner 陈有根
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