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Semi-coke waste heat recovery system

A waste heat recovery system, semi-coke technology, applied in the direction of steam generation method using heat carrier, etc., can solve the problems of water consumption, environmental pollution, semi-coke waste, etc., to achieve enhanced heat transfer effect, good cooling effect, and less pollution Effect

Active Publication Date: 2014-12-17
SHANDONG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the above process of water-quenching semi-coke that water-quenching semi-coke consumes a lot of water resources, all the sensible heat of semi-coke is wasted, and the semi-coke dryer also consumes a lot of energy, which also causes environmental pollution.

Method used

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  • Semi-coke waste heat recovery system
  • Semi-coke waste heat recovery system
  • Semi-coke waste heat recovery system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] refer to figure 1 , the semi-coke waste heat recovery system of this embodiment is composed of a heat exchanger and a water-cooled screw conveyor 5, a plurality of coke discharge ports are arranged below the carbonization furnace, and two heat exchangers are fixed side by side on the carbonization furnace (not shown in the figure) ) below a coke discharge port, there are multiple water-cooled screw conveyors 5, each water-cooled screw conveyor 5 is fixed below the two heat exchangers, and two first inlets are arranged on the upper side of the water-cooled screw conveyor 5 The feed port 50103 and the two first feed ports 50103 are respectively connected to the discharge port of the heat exchanger, and the lower side of the water-cooled screw conveyor 5 is provided with a first discharge port 50104.

[0046] Preferably, the heat exchanger includes an outer heat exchanger 2 for enclosing a high-temperature material passage and an inner heat exchanger 3 located at the cente...

Embodiment 2

[0055] refer to image 3 , 5The difference between this embodiment and Embodiment 1 is that the semi-coke waste heat recovery system also includes a water-cooled scraper conveyor 6. The water-cooled scraper conveyor 6 is located directly below the first outlet 50104 of all the water-cooled screw conveyors 5. The water-cooled scraper conveyor 6 includes a casing 601, a scraper chain 602, a second feed port 603, a second outlet Feed port (not shown in the figure), reversing wheel assembly, drive wheel assembly and drive assembly. The scraper chain 602 is rotatably arranged in the casing 601 , and a water-cooling jacket outer plate 606 is arranged outside the lower half of the casing 601 , and the water-cooling jacket outer plate 606 and the casing 601 form a water-cooling jacket. One side of the water cooling jacket is provided with a water cooling jacket water inlet pipe 604, and the other side is provided with a water cooling jacket water outlet pipe 605. The scraper chain ...

Embodiment 3

[0061] refer to Figure 7 The difference between this embodiment and Embodiment 2 is that the middle part of the inner upper header 301 is fixedly connected with the corresponding heat conduction baffle 204, and the two ends of the inner upper header 301 are slidably connected with the corresponding heat conduction baffle 204 through a telescopic mechanism. Both ends of the inner upper header 301 are slidingly connected to the corresponding heat conduction baffles 204 through a telescopic mechanism. The header 301 and the heat conduction baffle 204 can slide relatively, which not only solves the problem of inconsistent thermal expansion between the inner upper header 301 and the outer heat exchanger 2, improves the working reliability of the heat exchanger, but also solves the problem of gas leakage, improving the Heat exchanger work safety.

[0062] refer to Figure 8 Specifically, the telescopic mechanism includes a sleeve 10 and a second gland 12, the sleeve 10 is fixedly...

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Abstract

The invention discloses a semi-coke waste heat recovery system and belongs to the field of semi-coke processing equipment. The semi-coke waste heat recovery system comprises heat exchangers and water-cooled screw conveyers (5); two heat exchangers are fixed below one coke discharging port of a carbide furnace in parallel; one water-cooled screw conveyer (5) is fixed below the two heat exchangers; the upper side of each water-cooled screw conveyer (5) is provided with two feeding holes (50103) which are respectively communicated with discharge holes of the heat exchangers; the lower side of each water-cooled screw conveyer (5) is provided with a first discharge hole (50104); the heat exchangers comprise an outer heat exchanger (2) used for defining a material channel. The heat exchangers and the water-cooled screw conveyers are adopted to sequentially cool and exchange heat of semi-coke; meanwhile, the semi-coke can rotate and blend under the rotary push of water-cooled screw bodies in the water-cooled screw conveyers, the heat exchange effect is obviously enhanced, and the problem that the semi-coke is cooled and exchanges heat difficultly can be effectively solved, so that the semi-coke is subjected to dry quenching, energy and water resource are saved, and the pollution is small.

Description

technical field [0001] A semi-coke waste heat recovery system belongs to the field of semi-coke processing equipment. Background technique [0002] Semi-coke is a deep-processing product of coal, which is produced by dry distillation of high-quality Jurassic clean coal blocks. As a new type of carbon material, semi-coke is widely used in the production fields of calcium carbide, ferroalloy, and ferrosilicon due to its excellent characteristics such as high fixed carbon, high specific resistance, high chemical activity, low ash, low sulfur, and low phosphorus. [0003] At present, when the carbonization furnace is used to produce semi-coke, the method of water quenching is generally used to cool the semi-coke: the water-cooled jacketed coke discharge box at the lower part of the carbonization furnace goes deep into the water tank, and the carbonized semi-coke is discharged from the coke discharge box. The mouth falls onto the coke support plate, and the semi-coke is pushed d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B1/04
Inventor 刘永启郑斌王佐任刘瑞祥王延遐王佐峰孙鹏高亮宝王学德
Owner SHANDONG UNIV OF TECH
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