CN102250630A

CN102250630A - Staged combustion down-draft type heat recovery coke oven

Info

Publication number: CN102250630A
Application number: CN2011101678742A
Authority: CN
Inventors: 蔡承祐; 刘洪春; 印文宝; 杨俊峰; 胡昌来
Original assignee: Acre Coking and Refractory Engineering Consulting Corp MCC
Current assignee: Acre Coking and Refractory Engineering Consulting Corp MCC
Priority date: 2011-06-21
Filing date: 2011-06-21
Publication date: 2011-11-23

Abstract

The invention relates to a staged combustion down-draft type heat recovery coke oven, belonging to the field of metallurgical coking. The staged combustion down-draft type heat recovery coke oven comprises combustion chambers and coking chambers which are alternately arranged, characterized in that each vertical flue of the combustion chambers is communicated with two adjacent coking chambers through communicating holes formed at the top of the walls of the coking chambers, so that the raw coal gas generated by the coking chambers adjacent to both sides of the combustion chambers enters the vertical flue of the same combustion chamber; and gas channels are arranged in the partitions of the vertical flues of the combustion chambers, combustion-supporting air is supplied by stages in the height direction of the vertical flues from the top or bottom of the coke oven along the gas channels in the partitions, and the air inlets at the tops of the partitions of the vertical flues are lower than the coal. Compared with the prior art, the staged combustion down-draft type heat recovery coke oven has the beneficial effects of improving the heating uniformity in the height direction of the coking chambers, lowering the furnace roof space temperature, uniformly distributing the raw coal gas in each vertical flue during the whole coking period, shortening the coking time, increasing the productivity of the single-hole coking chamber, benefiting environmental protection, saving energy and discharging no coking wastewater.

Description

A kind of sectional combustion type downward flame heat recovery coke oven

Technical field

The present invention relates to metallurgical coking field, particularly a kind of coking furnace shaft structure.

Background technology

Along with the development of coking technology, national policy is also more and more higher to the environmental requirement of coking industry, and is especially more and more stricter to the restrictions such as discharging of the disposal of pollutants of coking paroxysmal, coking chemical waste water.The heating meson of conventional coke oven is supplied with by coke oven gas pipe and blast furnace gas pipeline by the outside, the byproduct that produces in the process of coking reclaims the technology recovery by changing product, in removal process, inevitably can produce a large amount of pollutents such as wastewater containing phenol and cyanide, environment is caused serious pollution.

Therefore, the coke oven design just towards maximizing and the development of multiple spot burning control structure combining, to reduce the coke pushing number of times, reduces the disposal of pollutants of coking paroxysmal, reduces the discharging of coking chemical waste water, thereby reach environmental requirement.

Summary of the invention

The purpose of this invention is to provide a kind of can effectively improve the coking chamber height to heating uniformity, reduce furnace roof room temps and raw gas in the whole coking cycle in each flue the internal heat coke oven of distributed uniform.

For achieving the above object, the present invention is achieved through the following technical solutions:

A kind of sectional combustion type downward flame heat recovery coke oven, the combustion chamber and the coking chamber that comprise alternate layout, it is characterized in that, each flue of combustion chamber is connected by the communicating aperture that is positioned at coking chamber wall top with adjacent two coking chambers, and the raw gas that makes the adjacent coking chamber in both sides, combustion chamber produce enters same combustion chamber flue.

Be provided with gas passage in the flue partition of combustion chamber, combustion air is infeeded in the high upwards segmentation of flue along gas passage in the partition wall by coke oven top or bottom, and the air at flue partition top infeeds the height that mouthful position is lower than seam.

Compared with prior art, the invention has the beneficial effects as follows:

Can effectively improve the coking chamber height to heating uniformity, reduce furnace roof room temps and raw gas in the whole coking cycle in each flue distributed uniform; Shorten coking time, improve single hole coking chamber output, no coked waste water discharging helps environmental protection, saves the energy.

Description of drawings

Fig. 1 is the body of heater longitudinal sectional view of sectional combustion type downward flame heat recovery coke oven of the present invention;

Fig. 2 is that the C-C of Fig. 1 is to sectional view;

Fig. 3 is that the D-D of Fig. 1 is to sectional view.

Among the figure: the outlet of 1-coking chamber 2-combustion chamber 3-communicating aperture 4-gas passage 5-combustion air

Embodiment

Fig. 1 is the body of heater longitudinal sectional view (A-A of Fig. 2, Fig. 3, B-B sectional view) of sectional combustion type downward flame heat recovery coke oven of the present invention.Fig. 2 is that the C-C of Fig. 1 is to sectional view; Fig. 3 is that the D-D of Fig. 1 is to sectional view.

See Fig. 1, Fig. 2, Fig. 3, a kind of sectional combustion type downward flame heat recovery coke oven, the coking chamber 1 of coke oven and combustion chamber 2 alternate layouts, combustion chamber 2 each flue and two adjacent coking chambers are interconnected by the communicating aperture 3 that is positioned at coking chamber wall top; Combustion air enters gas passage 4 default in the flue partition of combustion chamber by coke oven top or bottom, infeed in the high upwards segmentation of combustion chamber flue, and the combustion air feeding hole at flue top, combustion chamber is lower than the seam height.

Each combustion chamber 2 is made up of several flues, combustion chamber 2 and coking chamber 1 are positioned on the chute district, the combustion chamber is linked to each other by the chute district with the waste gas flue of coke oven bottom, default gas passage 4 is installed with combustion air outlet 5 in the high upwards segmentation of flue in the flue partition of combustion chamber, the combustion air outlet at flue top is lower than the seam height, and each flue of combustion chamber and adjacent two coking chambers are interconnected by the communicating aperture 3 that is positioned at coking chamber wall top.

This kind sectional combustion type downward flame heat recovery coke oven utilizes the raw gas that self produces in the coking production process as thermal source, the byproduct that coking is produced all is converted into heat energy, by recovery and effective the utilization to heat, produce the energy of byproduct to realize coking, because of this coke oven adopts the sectional combustion technology, can reduce NO effectively _XDischarging.

Claims

1. sectional combustion type downward flame heat recovery coke oven, the combustion chamber and the coking chamber that comprise alternate layout, it is characterized in that, each flue of combustion chamber is connected by the communicating aperture that is positioned at coking chamber wall top with adjacent two coking chambers, and the raw gas that makes the adjacent coking chamber in both sides, combustion chamber produce enters same combustion chamber flue.

2. a kind of sectional combustion type downward flame heat recovery coke oven according to claim 1, it is characterized in that, in the flue partition of combustion chamber, be provided with gas passage, combustion air is infeeded in the high upwards segmentation of flue along gas passage in the partition wall by coke oven top or bottom, and the air at flue partition top infeeds the height that mouthful position is lower than seam.