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Process for start-up and slack period operation of fully charged boilers, e. g. of coal pressure gasification plants, and boiler system to carry out the process

Abstract

For the start-up and slack period of fully charged boilers hot water of e.g. 180/sup 0/C from a high pressure heater which is fed by a start-up boiler is used. In the first instance the boiler, its preheater and the vaporizer are filled with hot water from the start-up boiler until a medium water level is obtained. Subsequently water from the water separator is recycled through the preheater and the boiler by forced circulation and it is heated up to the hot water temperature by the start-up boiler. After the desired temperature has been reached the pressure combustion is ignited and the circulation through the preheater is interrupted by reversing to direct feed back. A considerable shortening of the start-up time is achieved because no heat is released to the condensation water in the boiler system as is done usually.
Authors:
Publication Date:
Oct 19, 1978
Product Type:
Patent
Report Number:
DE 2716292; A
Reference Number:
EDB-83-046332
Subject:
01 COAL, LIGNITE, AND PEAT; 42 ENGINEERING; BOILERS; START-UP; COAL GASIFICATION; COMBUSTION; FLOWSHEETS; HOT WATER; IGNITION; OPERATION; PRESSURE DEPENDENCE; PRESSURE VESSELS; CHEMICAL REACTIONS; CONTAINERS; DIAGRAMS; GASIFICATION; HYDROGEN COMPOUNDS; OXIDATION; OXYGEN COMPOUNDS; THERMOCHEMICAL PROCESSES; WATER; 010404* - Coal, Lignite, & Peat- Gasification; 014000 - Coal, Lignite, & Peat- Combustion; 421000 - Engineering- Combustion Systems
OSTI ID:
6517613
Country of Origin:
Germany
Language:
German
Availability:
Deutsches Patentamt, Muenchen, Germany, F.R.
Submitting Site:
HEDB
Size:
Pages: 20
Announcement Date:
Jan 01, 1983

Citation Formats

Meyer-Kahrweg, H. Process for start-up and slack period operation of fully charged boilers, e. g. of coal pressure gasification plants, and boiler system to carry out the process. Germany: N. p., 1978. Web.
Meyer-Kahrweg, H. Process for start-up and slack period operation of fully charged boilers, e. g. of coal pressure gasification plants, and boiler system to carry out the process. Germany.
Meyer-Kahrweg, H. 1978. "Process for start-up and slack period operation of fully charged boilers, e. g. of coal pressure gasification plants, and boiler system to carry out the process." Germany.
@misc{etde_6517613,
title = {Process for start-up and slack period operation of fully charged boilers, e. g. of coal pressure gasification plants, and boiler system to carry out the process}
author = {Meyer-Kahrweg, H}
abstractNote = {For the start-up and slack period of fully charged boilers hot water of e.g. 180/sup 0/C from a high pressure heater which is fed by a start-up boiler is used. In the first instance the boiler, its preheater and the vaporizer are filled with hot water from the start-up boiler until a medium water level is obtained. Subsequently water from the water separator is recycled through the preheater and the boiler by forced circulation and it is heated up to the hot water temperature by the start-up boiler. After the desired temperature has been reached the pressure combustion is ignited and the circulation through the preheater is interrupted by reversing to direct feed back. A considerable shortening of the start-up time is achieved because no heat is released to the condensation water in the boiler system as is done usually.}
place = {Germany}
year = {1978}
month = {Oct}
}