JPS55116425A - Ammonia injection controlling apparatus - Google Patents
Ammonia injection controlling apparatusInfo
- Publication number
- JPS55116425A JPS55116425A JP2424579A JP2424579A JPS55116425A JP S55116425 A JPS55116425 A JP S55116425A JP 2424579 A JP2424579 A JP 2424579A JP 2424579 A JP2424579 A JP 2424579A JP S55116425 A JPS55116425 A JP S55116425A
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- explosion
- gas
- mixing ratio
- controlled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
PURPOSE: To prevent the hazard of explosion and to enhance the efficiency of reaction by introducing an appropriate amount of diluting air required for denitration reaction by a method wherein there are provided a valve for adjusting the flow rate of the diluting air and an amplifier amplifying the instruction of the flow rate of NH3 gas.
CONSTITUTION: Total NOx amount 1-d is calculated by multiplying the flow rate 1-a of dry exhaust gas of a boiler by NOx concentration 1-b at the outlet of the boiler. The value 1-d is compared with the flow rate 1-c of NH3 gas introduced into a demitration apparatus. Subtraction is made to obtain the value 1-f. According to the resulting value 1-f, an instruction from a control meter 1-h is given and the flow rate of NH3 gas is controlled by an adjusting valve 1-i. At the same time, the output of the control meter 1-h is amplified by an amplifier 1-j. The flow rate of diluting air is controlled by an adjusting valve 1-e to which an amplified output is given, thereby a mixing ratio of NH3 to air is brought constant. As there will be the danger of explosion when the mixing ratio becomes below the lower limit of explosion, the mixing ratio is controlled by basing on safety factor.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2424579A JPS55116425A (en) | 1979-03-02 | 1979-03-02 | Ammonia injection controlling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2424579A JPS55116425A (en) | 1979-03-02 | 1979-03-02 | Ammonia injection controlling apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55116425A true JPS55116425A (en) | 1980-09-08 |
Family
ID=12132857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2424579A Pending JPS55116425A (en) | 1979-03-02 | 1979-03-02 | Ammonia injection controlling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55116425A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007326055A (en) * | 2006-06-08 | 2007-12-20 | Babcock Hitachi Kk | Denitrification apparatus with adjusting function for reducing agent injection distribution |
| JP2019143495A (en) * | 2018-02-16 | 2019-08-29 | 三菱日立パワーシステムズ株式会社 | Nox removal equipment, heat recovery boiler provided with nox removal equipment, gas turbine complex power-generating plant and nox removal method |
-
1979
- 1979-03-02 JP JP2424579A patent/JPS55116425A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007326055A (en) * | 2006-06-08 | 2007-12-20 | Babcock Hitachi Kk | Denitrification apparatus with adjusting function for reducing agent injection distribution |
| JP4662166B2 (en) * | 2006-06-08 | 2011-03-30 | バブコック日立株式会社 | Denitration equipment with reducing agent injection distribution adjustment function |
| JP2019143495A (en) * | 2018-02-16 | 2019-08-29 | 三菱日立パワーシステムズ株式会社 | Nox removal equipment, heat recovery boiler provided with nox removal equipment, gas turbine complex power-generating plant and nox removal method |
| US11530628B2 (en) | 2018-02-16 | 2022-12-20 | Mitsubishi Heavy Industries, Ltd. | Denitration device, heat recovery steam generator having the same, gas turbine combined cycle power plant and method of denitration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR940015237A (en) | NOx removal control device | |
| JPS5613019A (en) | Treating apparatus for electron ray irradiation exhaust gas | |
| JPS5496604A (en) | Exhaust heat recovering boiler device | |
| DE2902706A1 (en) | PROCEDURE FOR CONTROLLING AMMONIA INJECTION IN A DRY PROCESS FOR DENITRATING EXHAUST GAS | |
| JPH06182148A (en) | Controlling apparatus for wet flue gas desulfurization apparatus | |
| JPS55116425A (en) | Ammonia injection controlling apparatus | |
| JPS55104634A (en) | Improved process for exhaust gas treatment by means of catalyst combustion system | |
| JPS5575730A (en) | Controlling method for denitrification ammonia gas in flue gas denitrification apparatus | |
| JPS56163741A (en) | Method for controlling feed rate or nh3 in dry denitration apparatus | |
| JPS5514926A (en) | Water injection system for gas turbine | |
| JPS5285969A (en) | Equipment for dry denitration of exhaust gas containing unburned compo nents | |
| JPS5318465A (en) | Controlling method for volume of gas to be treated in desulfurizat | |
| JPS5230783A (en) | Wet desulfurization process of exhaust gas | |
| JPS60190217A (en) | Operation control of wet desulfurization and denitration apparatus | |
| JPS555750A (en) | Diffusing method for added ammonia in dry denitration unit | |
| JPS5517019A (en) | Dry denitration method | |
| JPS5422010A (en) | Denitrating ammonica pouring apparatus for gas turbine | |
| JPS55109436A (en) | Nh3 pouring rate control method | |
| JPS5719020A (en) | Feeding method of ammonia | |
| JPS5477296A (en) | Ph control for oxidation tower gypsum slurry in wet type stack gas desulfurization apparatus | |
| JPS51148118A (en) | Exhaust gas purifier | |
| JPS572425A (en) | Method of controlling injection of stag ammonia | |
| JPS55148765A (en) | Controlling unit of atmosphere in nitriding furnace | |
| JPS637086B2 (en) | ||
| JPS53132469A (en) | Dry denitrating apparatus using reducing method with ammonia |