JPS58183231U

JPS58183231U - Wet flue gas desulfurization equipment

Info

Publication number: JPS58183231U
Application number: JP7772082U
Authority: JP
Inventors: 泰樹橋本
Original assignee: バブコツク日立株式会社
Priority date: 1982-05-28
Filing date: 1982-05-28
Publication date: 1983-12-06
Also published as: JPS6244734Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は、従来の湿式脱硫装置の一例としての石灰石・
石骨法における吸収塔およびその循環系−統を示す図、
第２図は、本考案の一実施例を示す吸収塔循環系統説明
図、第３図は、湿式脱硫装置において、液ガス比、吸収
液のｐＨ１スプレ段数と脱硫率の関係の一例を示す図で
ある。図において、１・・・冷却塔、２・・・ミストエリミネ
ータ、３・・・吸収塔、４・・・吸収塔下部循環タンク
、５・・・吸収塔循環ポンプ、６・・・循環ライン、７
・・・スプレヘッダ、８・・・デミスタ、９・・・石灰
石スラリ供給ライン、１０・・・吸収液抜き出しライン
、１１・・・下段側スプレヘッダ用循環ポンプ、１２・
・・下段側スプレヘッダ用循環ライン、１３・・・下段
側スプレヘッダ、１４・・・補助循環タンク、１５・・
・上段側スプレヘッダ用循環ポンプ、１６・・・上段側
スプレヘッダ用循環ライン、１７・・・上段側スプレヘ
ッダ、１８・・・連絡管。Figure 1 shows an example of a conventional wet desulfurization equipment using limestone and
Diagram showing the absorption tower and its circulation system in the stone bone method,
Fig. 2 is an explanatory diagram of an absorption tower circulation system showing an embodiment of the present invention, and Fig. 3 is a diagram showing an example of the relationship between liquid-gas ratio, pH1 spray stage number of absorption liquid, and desulfurization rate in a wet desulfurization equipment. It is. In the figure, 1... Cooling tower, 2... Mist eliminator, 3... Absorption tower, 4... Absorption tower lower circulation tank, 5... Absorption tower circulation pump, 6... Circulation line, 7
... Spray header, 8... Demister, 9... Limestone slurry supply line, 10... Absorbent extraction line, 11... Circulation pump for lower spray header, 12.
...Circulation line for lower spray header, 13... Lower spray header, 14... Auxiliary circulation tank, 15...
- Circulation pump for upper spray header, 16... Circulation line for upper spray header, 17... Upper spray header, 18... Communication pipe.

Claims

[Scope of utility model registration request]

A type of wet flue gas flue gas equipped with an absorption tower equipped with a multi-stage spray header inside that sprays an absorption liquid for absorbing and removing sulfur dioxide gas from flue gas, and an absorption liquid circulation tank installed at the bottom of the absorption tower. In the desulfurization equipment, one or more auxiliary absorption liquid circulation tanks connected in series to the absorption liquid circulation tank are attached, and the pH of the absorption liquid in the auxiliary absorption liquid circulation tank is sequentially adjusted to increase the pH of the absorption liquid in the absorption liquid circulation tank. and the multi-stage spray header is divided into upper and lower parts corresponding to the number of circulation tanks, and the absorbent liquid with a high pH is placed in the upper side of the spray header, and the absorbent liquid with a low pH is placed in the upper part of the spray header. A wet flue gas desulfurization device characterized in that the lower stage side is supplied from the circulation tank.