PT79523A - Method and apparatus for recovery of heat from process for producing concentrated sulfuric acid - Google Patents

Method and apparatus for recovery of heat from process for producing concentrated sulfuric acid

Info

Publication number
PT79523A
PT79523A PT79523A PT7952384A PT79523A PT 79523 A PT79523 A PT 79523A PT 79523 A PT79523 A PT 79523A PT 7952384 A PT7952384 A PT 7952384A PT 79523 A PT79523 A PT 79523A
Authority
PT
Portugal
Prior art keywords
tower
heat
h2so4
exchanger
alloys
Prior art date
Application number
PT79523A
Other languages
Portuguese (pt)
Other versions
PT79523B (en
Inventor
Donald Ray Mcalister
Steven Anthony Ziebold
Original Assignee
Monsanto Co
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 Monsanto Co filed Critical Monsanto Co
Priority to PT79523A priority Critical patent/PT79523B/en
Publication of PT79523A publication Critical patent/PT79523A/en
Publication of PT79523B publication Critical patent/PT79523B/en

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  • Gas Separation By Absorption (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

gas obtd. from the first oxidn. stage of an SO2 to SO3 catalytic convertor is fed to a heat recovery tower . 98-102% conc. H2SO4 at above 120 deg.C is passed to the tower and sprayed onto its packing for contact with rising SO3 gas. Downwardly flowing H2SO4 exothermically absorbs SO3. H2SO4 e.g. at upto 240 deg.C, is removed from the tower and pumped to a heat exchanger for heat removal and recirculation (91) to the tower. An SO3 depleted stream (88) is obtd. from the tower top. Heat exchanger is fabricated from alloys with a low corrosion rate w.r.t. hot conc. H2SO4. Heat recovery towerand exchanger are esp. made from alloys which have compsns. with a corrosion index (C.I.) of larger than 39 . Heat recovery tower can opt. be of ceramic lined corbon steel. Stainless steel alloys are esp. pref. for both tower and exchanger.
PT79523A 1984-11-20 1984-11-20 Method and apparatus for recovery of heat from process for producing concentrated sulfuric acid PT79523B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PT79523A PT79523B (en) 1984-11-20 1984-11-20 Method and apparatus for recovery of heat from process for producing concentrated sulfuric acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PT79523A PT79523B (en) 1984-11-20 1984-11-20 Method and apparatus for recovery of heat from process for producing concentrated sulfuric acid

Publications (2)

Publication Number Publication Date
PT79523A true PT79523A (en) 1984-12-01
PT79523B PT79523B (en) 1986-09-08

Family

ID=20083579

Family Applications (1)

Application Number Title Priority Date Filing Date
PT79523A PT79523B (en) 1984-11-20 1984-11-20 Method and apparatus for recovery of heat from process for producing concentrated sulfuric acid

Country Status (1)

Country Link
PT (1) PT79523B (en)

Also Published As

Publication number Publication date
PT79523B (en) 1986-09-08

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