JPS5648224A - Furfural exhaust gas removing method - Google Patents

Furfural exhaust gas removing method

Info

Publication number
JPS5648224A
JPS5648224A JP12437279A JP12437279A JPS5648224A JP S5648224 A JPS5648224 A JP S5648224A JP 12437279 A JP12437279 A JP 12437279A JP 12437279 A JP12437279 A JP 12437279A JP S5648224 A JPS5648224 A JP S5648224A
Authority
JP
Japan
Prior art keywords
furfural
gas
exhaust gas
sodium bisulfite
duct
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.)
Granted
Application number
JP12437279A
Other languages
Japanese (ja)
Other versions
JPS6023849B2 (en
Inventor
Yasutoshi Yamashita
Toshinori Takemori
Fujio Kawada
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.)
KYOWA KAKOU KK
Kyowa Kako Co Ltd
Original Assignee
KYOWA KAKOU KK
Kyowa Kako 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 KYOWA KAKOU KK, Kyowa Kako Co Ltd filed Critical KYOWA KAKOU KK
Priority to JP54124372A priority Critical patent/JPS6023849B2/en
Publication of JPS5648224A publication Critical patent/JPS5648224A/en
Publication of JPS6023849B2 publication Critical patent/JPS6023849B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Treating Waste Gases (AREA)
  • Furan Compounds (AREA)

Abstract

PURPOSE: To cause gas-liquid contact reaction and improve the removing efficiency of furfural by causing counter-current contacting of a furfural exhaust gas with an aqueous sodium bisulfite of the specific pH.
CONSTITUTION: An exhuast gas contg. furfural is led into a washing tower 2 via a duct 1. On the other hand, an aqueous sodium bisulfite soln. of 4.5W6.5 pH value range stored in a circulating liquid tank 5 is sprayed from nozzles 4 through a pump 6 and a conduit 7, whereby it is caused to make countercurrent contact with the exhaust gas. The aqueous soln. is then returned into the circulating tank and is replenished with sodium bisulfite, after which it is again force-circulated by the pump 6. If necessary, the treated gas is treated in the secondary washing towar of the similar system via a duct 3 and the slightly remaining furfural is passed through an adsorption tower packed with active carbon, whereby it is completely removed. The pollution-free exhaust gas is released into the air. The reason for specifying pH is: At above the upper limit, the absorption efficiency decreases and below the lower limit, a large amount of SO2 gas will be produced.
COPYRIGHT: (C)1981,JPO&Japio
JP54124372A 1979-09-27 1979-09-27 Furfural exhaust gas removal method Expired JPS6023849B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54124372A JPS6023849B2 (en) 1979-09-27 1979-09-27 Furfural exhaust gas removal method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54124372A JPS6023849B2 (en) 1979-09-27 1979-09-27 Furfural exhaust gas removal method

Publications (2)

Publication Number Publication Date
JPS5648224A true JPS5648224A (en) 1981-05-01
JPS6023849B2 JPS6023849B2 (en) 1985-06-10

Family

ID=14883762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54124372A Expired JPS6023849B2 (en) 1979-09-27 1979-09-27 Furfural exhaust gas removal method

Country Status (1)

Country Link
JP (1) JPS6023849B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0435767A (en) * 1990-05-30 1992-02-06 Nordson Kk Method for applying liquid or molten material
JPH0639340A (en) * 1992-01-21 1994-02-15 Kiyoshi Saitou Applying method for spraying agent

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0435767A (en) * 1990-05-30 1992-02-06 Nordson Kk Method for applying liquid or molten material
JPH0639340A (en) * 1992-01-21 1994-02-15 Kiyoshi Saitou Applying method for spraying agent

Also Published As

Publication number Publication date
JPS6023849B2 (en) 1985-06-10

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