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Method and device for carrying out dry quenching and recovering heat energy in radiation and conduction heat absorption mode

A heat recovery and radiation heat transfer technology, applied in the steam generation method using heat carrier, coke cooling, coke oven, etc., can solve the problems of high equipment investment, high operating cost, complex equipment, etc., and achieve low operating cost, The equipment is simple and the effect of solving energy loss

Active Publication Date: 2012-07-04
JIANGSU MINGGE FORGING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the equipment of this technology is complicated, the equipment investment is high, and the operating cost is also high, so it is difficult to adopt it in practice

Method used

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  • Method and device for carrying out dry quenching and recovering heat energy in radiation and conduction heat absorption mode
  • Method and device for carrying out dry quenching and recovering heat energy in radiation and conduction heat absorption mode
  • Method and device for carrying out dry quenching and recovering heat energy in radiation and conduction heat absorption mode

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Experimental program
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Effect test

Embodiment 1

[0023] Radiation and conduction endothermic coke dry quenching process and equipment such as figure 1 and figure 2 As shown, it is composed of dotted dry quenching furnace I, low temperature coke discharge system II, water circulation system III and steam generation system IV.

[0024] The red coke 2 coming out of the coke oven is loaded into the red coke storage tank 1 in the dry quenching process by opening the top cover 15 of the red coke inlet at about 1000 ° C. After the red coke is loaded, the red coke storage tank top cover 15 closure. The coke entering the red coke storage tank moves slowly on the rotating disc red coke conveying device 3, and conducts radiation heat transfer to the radiation heat transfer tube, and a radiation heat transfer grid 4 is arranged between the red coke and the radiation heat transfer tube. The coke is conveyed through two stages and the temperature drops to 600-700°C, then enters the heat conduction heat transfer section, moves slowly by...

Embodiment 2

[0026] This embodiment adopts the radiation and conduction heat-absorbing CDQ process in which the storage tank is a vertical cylinder. The CDQ process and equipment are as follows figure 2 As shown, the red coke coming out of the coke oven is sent to the red coke storage tank in the dry quenching process, and the red coke at about 1000 °C is transported by the belt conveyor 3a in the radiation heat transfer stage and slowly moves to the conduction heat transfer stage, red coke moves slowly from top to bottom under the action of gravity in the conduction heat transfer stage. The high-pressure cooling water enters the heat conduction heat pipe from bottom to top through the high-pressure water pump, conducts heat exchange with the coke, enters the saturated water vapor tank and then enters the radiation heat transfer pipe, and generates 450 ° C, 4.6 MPa after heat transfer with the upper red coke. The superheated steam enters the power generation unit. In the radiation heat t...

Embodiment 3

[0028] This embodiment adopts as Figure 4 The storage tank shown in 1a is a radiation and conduction endothermic coke CDQ process with a combination of inclined cylinder and vertical cylinder. The red coke from the coke oven is sent to the red coke storage in the CDQ process. The angle between the upper part of the inclined cylinder body and the horizontal plane of the red coke storage tank is 50°, which is conducive to the slow movement of coke under the action of gravity. After heat exchange of 1100℃ red coke, in the radiation heat exchange stage, the coke is dropped from 1100℃ to 600℃, and in the conduction heat transfer stage, the coke is no longer sprayed with water but discharged directly after being dropped from 600℃ to 150-120℃ .

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Abstract

The invention relates to a method and a device for carrying out dry quenching and recovering heat energy in a radiation and conduction heat absorption mode. In a closed container, red cokes are subjected to heat transfer to generate steam by heat radiation, or metal heat transfer, or a combination method of firstly carrying out heat radiation and then carrying out heat transfer. By indirect heat transfer, the heat energy stored in the red cokes with the temperature of 1,000 DEG C is converted into the high temperature steam to be recovered. The device at least consists of a dry quenching furnace, a steam generating system, a water circulation system and a low temperature coke discharging system. A radiation heat transfer pipe for receiving high temperature radiant heat and a heat conduction and transfer pipe which is in direct contact with the cokes are arranged in the dry quenching furnace. Water or the steam is filled in both the radiation heat transfer pipe and the heat conduction and transfer pipe. A fluid inlet side in the radiation heat transfer pipe is connected with a fluid outlet side of the heat conduction and transfer pipe. In the practical engineering, the specific construction of the steam generating system can be designed and arranged according to a structure of a steam boiler which is widely applied. The method and the device have the characteristics of simple equipment, low operating cost, high energy recovery rate and the like.

Description

technical field [0001] The invention relates to a method and device for directly using steam or power generation in dry coke quenching of radiation and conduction endothermic coke to recover heat energy, which belongs to the field of energy recovery and environmental protection; method and device. Background technique [0002] my country is a big coke producer, and high-temperature coke (red coke) needs to be cooled in a short period of time, that is, coke quenching. Red coke contains a lot of heat energy, if it can be recycled, it can save energy and reduce emissions at the same time. So far, the wet coke quenching method is mainly used to spray water to cool down. Although this method has simple equipment and fast coke quenching speed, it loses a large amount of heat energy carried by red coke and causes environmental pollution. At present, the coke CDQ technology of cooling red coke with nitrogen to generate electricity has been developed and successfully applied to ind...

Claims

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Application Information

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IPC IPC(8): F22B1/02C10B39/02
Inventor 张书廷吕学斌
Owner JIANGSU MINGGE FORGING EQUIP CO LTD
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