JPS5471767A - Nh3 leak control method for denitrator at the time of raising load - Google Patents

Nh3 leak control method for denitrator at the time of raising load

Info

Publication number
JPS5471767A
JPS5471767A JP13907977A JP13907977A JPS5471767A JP S5471767 A JPS5471767 A JP S5471767A JP 13907977 A JP13907977 A JP 13907977A JP 13907977 A JP13907977 A JP 13907977A JP S5471767 A JPS5471767 A JP S5471767A
Authority
JP
Japan
Prior art keywords
time
supply
raising
load
raising load
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
Application number
JP13907977A
Other languages
Japanese (ja)
Inventor
Tetsuya Orui
Osamu Imai
Yoshihide Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP13907977A priority Critical patent/JPS5471767A/en
Publication of JPS5471767A publication Critical patent/JPS5471767A/en
Pending legal-status Critical Current

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  • Treating Waste Gases (AREA)

Abstract

PURPOSE: To control the title NH3 leak by stopping supply of NH3 in a specific time before or after the beginning of raising load, and restarting the supply at an earlier point of time out of a specific time before or after the end of raising load and a point of time at which the concn. of NOx in denitrator outlet gas reaches a specific value.
CONSTITUTION: At the time of raising load, NH3 adsorbed on denitration catalyst is desorbed as the temp. of exhaust gas is increased, and it is effectively used in denitration, so supply of NH3 is stopped in 5 min before and after the beginning of raising load. In case the range of fluctuation in load is narrow, supply of NH3 is restarted in 5 min before and after the end of raising load. When the range is wide, the supply is restarted at a point of time at which the concn. of NOx in denitrator outlet gas reaches 2W4 times as high as that before the raising. To an arbitrary range, the supply is restarted at an earlier point of time out of the above two points of time. NH3 is supplied in proportion with NOx in exhaust gas.
COPYRIGHT: (C)1979,JPO&Japio
JP13907977A 1977-11-18 1977-11-18 Nh3 leak control method for denitrator at the time of raising load Pending JPS5471767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13907977A JPS5471767A (en) 1977-11-18 1977-11-18 Nh3 leak control method for denitrator at the time of raising load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13907977A JPS5471767A (en) 1977-11-18 1977-11-18 Nh3 leak control method for denitrator at the time of raising load

Publications (1)

Publication Number Publication Date
JPS5471767A true JPS5471767A (en) 1979-06-08

Family

ID=15236986

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13907977A Pending JPS5471767A (en) 1977-11-18 1977-11-18 Nh3 leak control method for denitrator at the time of raising load

Country Status (1)

Country Link
JP (1) JPS5471767A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5780637A (en) * 1980-11-10 1982-05-20 Hitachi Ltd Target for image pickup tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5780637A (en) * 1980-11-10 1982-05-20 Hitachi Ltd Target for image pickup tube
JPH0126144B2 (en) * 1980-11-10 1989-05-22 Hitachi Seisakusho Kk

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