SU1488299A1 - Installation for producing coke and generating steam - Google Patents

Description

The invention relates to techniques for the production of coke and allows you to increase the production of reducing the consumption of steam for heating steam and reduce energy consumption. The installation contains a coke oven 1, a combined burs 3 with a convective heat exchanger 4, which is connected to the first stage 5 of the economizer and through the heat exchanger 6 of the deaerator 7 pump 8 with the second stage 9 of the economizer. The waste heat boiler 10 is connected by a flue 11 to a coke quenching chamber 12. The system 13 of chemical water treatment is connected to the heat exchanger 6 of the deaerator 7 and then through the feed pump 14 with the first stage 5 of the economizer. 1 il.

δ and „„ 14882

WITH

with

1488299

3

four

The invention relates to the production of coke with the simultaneous production of steam in waste heat boilers.

The purpose of the invention is to increase the production of steam and reduce energy costs.

The drawing shows a diagram of the installation for the production of coke and steam.

The device contains coke ovens 1, connected to the chimney 2 through collecting burs 3 with a convective heat exchanger 4 connected with the first stage 5 of the economizer and through the heat exchanger 6 of the deaerator 7, the pump 8 with the second stage 9 of the economizer. The waste-heat boiler 10 is connected by a flue 11 to a coke quenching chamber 12, which is connected to coke ovens 1 by a rail conveyor. The system 13 of chemical water purification is connected to the heat exchanger 6 of the deaerator and then through the feed pump 14 with the first stage 5 of the economizer.

The installation works as follows.

The coke oven 1 enters the coal charge (not shown), which is heated without air, resulting in hot coke in the coke ovens. The last of the coke ovens enters the coke quenching chamber 12, where it gives off its heat to the inert circulating gas, which through the duct 11 enters the boiler 10, where it gives off the heat to the feed water and enters the coke quenching chamber 12 again.

The feed water passes through the system 13 of chemical water purification, the heat exchanger 6 of the deaerator, where it is heated by the heat of the feed water heated by the heat of flue gases in a convective heat exchanger 4,

installed in the hog 3. Feedwater passes a vacuum de-aerator 7 and a feed pump 14 is supplied to the first stage 5 of the economizer, where it is heated by circulating gas and then fed to a convective heat exchanger 4, where it is heated by flue gas heat and through the heat exchanger 6 deaerator and the pump 8 is fed into second stage 9 economizer. Steam is generated in the recovery boiler.

The use of the proposed device saves steam for heating feedwater before deaeration and increases the steam capacity of the recovery boiler. In addition, the use of a vacuum deaerator15 torus allows, if necessary, to reduce the temperature of the feed water and, consequently, reduce the temperature of the cooled coke.

20

Claims (1)

Claim Installation for the production of coke and steam, which includes coke ovens, a combined bore with a convective heat exchanger installed in it, a dry coke quenching chamber 25, a waste heat boiler with economizer steps, a chemical water purification system, a deaerator with a heat exchanger and a pump connected to an economizer step , characterized in that, in order to increase steam production and reduce energy consumption, the output of the first stage of the economizer is connected to the inlet of a convective heat exchanger installed in a combined boar, the output of which o connected to the heat exchanger deaerator, and the discharge pipe of the pump is connected to the second stage economizer.