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Heat recovery from flue gas of coal fired installations with reduced pollutant emission - the Zittau process

Journal Article:

Abstract

Explains the Zittau technology of combined flue gas heat recovery and flue gas desulfurization in small brown coal fired power plants. Steam generators to be equipped with this technology have 6.5 or 10 t/h steam capacity and are intended for combustion of low-grade brown coal (8.2 MJ/kg). An industrial 6.5 t/h prototype steam generator is in operation and it achieves 95% SO{sub 2} removal from flue gas with 5600 to 7800 mg SO{sub 2} per m{sup 3} of dry flue gas. The Zittau technology is available in 3 variants: with maximum waste heat recovery, with partial waste heat recovery or without waste heat recovery and only wet flue gas scrubbing. Two flowsheets of flue gas and suspension circulation are provided. The first variant recovers 25.7% of nominal heat capacity (1.1 thermal MW from a 4.2 MW steam generator with 6.5 t/h steam capacity), which amounts to economizing 2,400 t/a brown coal equivalent over 4,000 annual operating hours. The second variant recovers 6.5% of waste heat, requiring less investment by installing smaller heat exchangers than used in the first variant. All three variants have contact spray separators, suction units and suspension preparation equipment. Flue gas suspension scrubbing is carried out with  More>>
Authors:
Mueller, H; Strauss, R; Hofmann, K -D; Suder, M; Hultsch, T; Wetzel, W; Gabrysch, H; Jung, J [1] 
  1. Technische Hochschule, Zittau (German Democratic Republic)
Publication Date:
Jan 01, 1989
Product Type:
Journal Article
Reference Number:
CLA-89-120793; EDB-89-165332
Resource Relation:
Journal Name: Energieanwendung; (German Democratic Republic); Journal Volume: 38:1
Subject:
01 COAL, LIGNITE, AND PEAT; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 20 FOSSIL-FUELED POWER PLANTS; FLUE GAS; DESULFURIZATION; FOSSIL-FUEL POWER PLANTS; HEAT RECOVERY; AIR POLLUTION ABATEMENT; ASHES; BROWN COAL; CIRCULATING SYSTEMS; COMBUSTION; DESIGN; EFFICIENCY; FLOWSHEETS; FLY ASH; GERMAN DEMOCRATIC REPUBLIC; HOT GAS CLEANUP; OPERATION; PERFORMANCE TESTING; PILOT PLANTS; PROCESS DEVELOPMENT UNITS; SCRUBBING; SPECIFICATIONS; STEAM GENERATORS; SUSPENSIONS; TECHNOLOGY ASSESSMENT; AEROSOL WASTES; BOILERS; CARBONACEOUS MATERIALS; CHEMICAL REACTIONS; COAL; DIAGRAMS; DISPERSIONS; ENERGY RECOVERY; ENERGY SOURCES; FOSSIL FUELS; FUELS; FUNCTIONAL MODELS; GASEOUS WASTES; MATERIALS; OXIDATION; POLLUTION ABATEMENT; POWER PLANTS; PURIFICATION; RECOVERY; RESIDUES; TESTING; THERMAL POWER PLANTS; THERMOCHEMICAL PROCESSES; VAPOR GENERATORS; WASTES; 010800* - Coal, Lignite, & Peat- Waste Management; 014000 - Coal, Lignite, & Peat- Combustion; 320304 - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization; 200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
OSTI ID:
5501843
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Journal ID: ISSN 0013-7405; CODEN: EANWA
Submitting Site:
CLA
Size:
Pages: 12-15
Announcement Date:
May 01, 1989

Journal Article:

Citation Formats

Mueller, H, Strauss, R, Hofmann, K -D, Suder, M, Hultsch, T, Wetzel, W, Gabrysch, H, and Jung, J. Heat recovery from flue gas of coal fired installations with reduced pollutant emission - the Zittau process. Germany: N. p., 1989. Web.
Mueller, H, Strauss, R, Hofmann, K -D, Suder, M, Hultsch, T, Wetzel, W, Gabrysch, H, & Jung, J. Heat recovery from flue gas of coal fired installations with reduced pollutant emission - the Zittau process. Germany.
Mueller, H, Strauss, R, Hofmann, K -D, Suder, M, Hultsch, T, Wetzel, W, Gabrysch, H, and Jung, J. 1989. "Heat recovery from flue gas of coal fired installations with reduced pollutant emission - the Zittau process." Germany.
@misc{etde_5501843,
title = {Heat recovery from flue gas of coal fired installations with reduced pollutant emission - the Zittau process}
author = {Mueller, H, Strauss, R, Hofmann, K -D, Suder, M, Hultsch, T, Wetzel, W, Gabrysch, H, and Jung, J}
abstractNote = {Explains the Zittau technology of combined flue gas heat recovery and flue gas desulfurization in small brown coal fired power plants. Steam generators to be equipped with this technology have 6.5 or 10 t/h steam capacity and are intended for combustion of low-grade brown coal (8.2 MJ/kg). An industrial 6.5 t/h prototype steam generator is in operation and it achieves 95% SO{sub 2} removal from flue gas with 5600 to 7800 mg SO{sub 2} per m{sup 3} of dry flue gas. The Zittau technology is available in 3 variants: with maximum waste heat recovery, with partial waste heat recovery or without waste heat recovery and only wet flue gas scrubbing. Two flowsheets of flue gas and suspension circulation are provided. The first variant recovers 25.7% of nominal heat capacity (1.1 thermal MW from a 4.2 MW steam generator with 6.5 t/h steam capacity), which amounts to economizing 2,400 t/a brown coal equivalent over 4,000 annual operating hours. The second variant recovers 6.5% of waste heat, requiring less investment by installing smaller heat exchangers than used in the first variant. All three variants have contact spray separators, suction units and suspension preparation equipment. Flue gas suspension scrubbing is carried out with fly ash produced by the steam generator. This ash is capable of absorbing 50 to 70% of flue gas SO{sub 2}. Supply of additional ash from other plants achieve a further 25% SO{sub 2} removal; a higher desulfurization degree is obtained by adding limestone to suspensions. 5 refs.}
journal = {Energieanwendung; (German Democratic Republic)}
volume = {38:1}
journal type = {AC}
place = {Germany}
year = {1989}
month = {Jan}
}