A New Structure Coke Quenching Oven

A new type of structure and coke quenching oven technology, which is applied in coke ovens, coke cooling, petroleum industry, etc., can solve the problems of large indentation height of refractory bricks, affecting normal production, and high support strength of corbels, so as to reduce electricity consumption. Consumption, prolong contact and residence time, increase the effect of distribution uniformity

Inactive Publication Date: 2019-01-08
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual operation, the coke and coke powder in the furnace continuously scour and wear the refractory material, coupled with the chemical corrosion of the refractory material by the reducing atmosphere in the furnace, especially in the "corbel" part, the damage is particularly prominent, often serious Affect normal production
[0005] Theoretically speaking, the larger and wider the inclination of the chute area, the larger the flue gas passing area, which is more conducive to the gas distribution in the coke oven and reduces the movement resistance of the high-temperature flue gas, but this will make the supporting strength of the corbel too large , are more susceptible to damage
Therefore, the horizontal span of the current corbels is generally limited to about 0.5m, and the indentation height of the refractory brick masonry is very large, even in this way the life of the corbels is very short

Method used

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  • A New Structure Coke Quenching Oven
  • A New Structure Coke Quenching Oven
  • A New Structure Coke Quenching Oven

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Fast coke quenching scheme:

[0053] The purpose of this scheme is to quickly quench coke and produce as little syngas as possible to ensure the quality of cold coke. During the coke quenching process, the red hot coke is loaded into the pre-storage section 1 at intervals. When the temperature of the first distribution plate 5 from top to bottom is displayed as 300°C, the program-controlled valve connected to the cooling medium nozzle 9 below it is opened to filter The coking wastewater from which solid particles have been removed is slowly sprayed into the diamond-shaped area 12 below the V-shaped plate 10 . In this area, the atomized water sprayed from the nozzle directly contacts the falling red hot coke 8, and is immediately vaporized into steam. The superheated steam is formed through the red coke layer through the gap, and the combustible gas phase (mainly CH 4 、H 2 , CO and other components), water gas and a small amount of fine coke powder generated by the re...

Embodiment 2

[0059] Prolific syngas solution:

[0060] Under the conditions of guaranteeing the strength and ash index of coke, the purpose of this scheme is to produce as much syngas as possible. Its operation process is basically the same as that of Embodiment 2, but the coke oven gas is introduced into the distribution plate 5 of the first and second layers as cooling medium, and the distribution plate 5 of the third layer continues to spray water. The role of introducing coking gas is to convert steam and methane in coke oven gas under the catalytic action of high temperature and red heat to produce more synthesis gas. The temperature control index of each distribution plate is controlled as follows: the distribution plate 5 of the first layer is 800°C, the distribution plate 5 of the second layer is 600°C, and the distribution plate 5 of the third layer is 180°C. The water spray is mainly concentrated at the distribution plate 5 of the third layer, where low-temperature coke is used ...

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Abstract

The invention relates to a quenching finance adopting a novel structure. The quenching furnace comprises a vertical furnace body, wherein the furnace body is hollow inside and comprises a pre-storage section, a support section and a cooling section which are sequentially and fixedly connected from top to bottom, and an annular flue is arranged outside the support section and communicated with a main flue; a plurality of auxiliary flues communicated with the annular flue are evenly arranged at the support section; at least one or more layers of distribution plates evenly distributed vertically are mounted in the cooling section, a cooling device is arranged below each layer of distribution plate, and multiple gaps through which coke can pass are formed in each layer of distribution plate. The quenching furnace overcomes the defects that cant beam supports of existing quenching furnaces are damaged easily and the maintenance cost is high; besides, the quenching process can be controlled according to different quenching requirements, and effects of quick quenching, heat recovery and byproduct water gas are realized.

Description

technical field [0001] The invention relates to the technical field of coke quenching in the field of coal chemical industry, in particular to a coke quenching oven with a new structure. Background technique [0002] In recent years, with the increasing requirements for environmental protection and energy saving, CDQ technology has been more and more used in the field of coke quenching. The principle of coke CDQ is very simple. The basic process is to transport the high-temperature red coke released from the coke oven to the quenching oven. In the coke quenching oven, the red hot red coke descends and inert gas (mainly nitrogen) circulates in it. Reverse contact occurs to exchange heat, red coke drops to a suitable temperature (180-200°C) and becomes cold coke, which is discharged from the bottom of the quenching furnace through the coke discharge valve, and nitrogen is heated from low temperature (180°C) to 800°C in the quenching furnace. ~950°C, after being discharged fro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B39/02
CPCC10B39/02
Inventor 李天文王琦孙晓辉林官敬王全龙孙烈刚张天来
Owner YANTAI UNIV
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