Multi-cavity rotary inter-wall heat exchanger for hot semi-coke and coal

A heat exchange device, rotary technology, applied in the direction of indirect heat exchanger, heat exchanger type, moving pipe heat exchanger, etc., can solve the problems of increasing the burden of pyrolysis kiln and affecting the processing capacity of pyrolysis equipment, etc. , to achieve the effect of reducing the risk of fire and high heat utilization

Inactive Publication Date: 2016-11-16
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method directly utilizes the waste heat of semi-coke and has high heat utilization efficiency, at the same time, a part of semi-coke and pyrolysis coal always participate in the process cycle, thus increasing the burden on the pyrolysis kiln and affecting the processing capacity of pyrolysis equipment

Method used

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  • Multi-cavity rotary inter-wall heat exchanger for hot semi-coke and coal
  • Multi-cavity rotary inter-wall heat exchanger for hot semi-coke and coal
  • Multi-cavity rotary inter-wall heat exchanger for hot semi-coke and coal

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Experimental program
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Effect test

Embodiment 1

[0026] In order to overcome the need to reduce the comprehensive energy consumption in the coal pyrolysis process and improve the energy efficiency of the coal pyrolysis process system, the present invention provides such figure 1 Shown is a multi-chamber rotary partition wall heat exchange device for hot semi-coke and coal. This device adopts a multi-chamber rotary structure, and hot semi-coke and coal pass through different channels to realize partition heat exchange. After passing through this equipment, the semi-coke is cooled and lowered in temperature, and the coal is partially dried, and the temperature will also increase to a certain extent.

[0027] A multi-cavity rotary partition heat exchange device for hot semi-coke and coal, including a rotary cylinder 7, the rotary cylinder 7 is placed obliquely, and the feed end of the rotary cylinder 7 is higher than its discharge end;

[0028] The feeding end of the rotary cylinder 7 is sequentially connected with a semi-coke ...

Embodiment 2

[0039] Based on the basis of embodiment 1, such as figure 2 As shown, in this embodiment, the rotating cylinder 7 includes a cylinder body 701, a heat exchange tube 11, a sub-chamber plate 12 and a support tube 13; the support tube 13 traverses the cylinder body 701 and is located in the cylinder In the middle of the cylinder body 701, there are multiple cavity-dividing plates 12, which are evenly located between the inner surface of the cylinder body 701 and the support tube 13; there are multiple heat exchange tubes 11, and they are located in the cylinder body 701 , the two ends of the heat exchange tube 11 are connected with the semi-coke collection box 10 and the semi-coke distribution box 4 respectively.

[0040] In this embodiment, four cavity-dividing plates 12 are used, and the cavity-dividing plates 12 are arranged along the length direction of the cylinder body 701 and are located between the inner surface of the cylinder body 701 and the support tube 13 at an angl...

Embodiment 3

[0045] Based on the above embodiments, in this embodiment, there are 20 heat exchange tubes 11 arranged in layers along the periphery of the inner cavity wall of the cylinder body 701 . The difference from Embodiment 2 is that the distribution of the heat exchange tubes 11 is different, and both distribution methods can meet the heat exchange requirements of the present invention. A plurality of heat exchange tubes 11 rotate together during the rotation of the rotary cylinder 7, thus forming a multi-chamber rotary structure, which can dry coal well and effectively.

[0046] The semi-coke feeding screw 1 is consistent with the center line of the rotating cylinder 7 .

[0047] The coal discharge chute 3 is located on the top of the kiln head box 2 , and the discharge chute 3 extends through the kiln head box 2 to the rotary cylinder 7 and communicates with the rotary cylinder 7 .

[0048]The feed end and the discharge end of the rotary cylinder 7 are respectively provided with ...

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Abstract

The invention provides a multi-cavity rotary type inter-wall heat exchanger for semi-coke and coal. The heat exchange comprises a rotary cylinder which is inclined and has a feed end higher than a discharge end thereof; the feeding end of the rotary cylinder is connected with the semi-coke distributing box, a kiln box and a feeding screw in sequence, and the feed screw is connected with the semi-coke distributing box through the kiln box, the semi-coke distributing box is arranged in the rotary cylinder, and the kiln box is provided with a down chute; the discharge end of the rotary cylinder is connected with the kiln tail box and the semi-coke aggregate box in sequence, and the semi-coke collecting box is located inside the rotary cylinder through the kiln tail box and extends externally; the semi-coke collecting box is connected with the semi-coke discharge box after extending out of the rotary cylinder; the rotary cylinder is provided with an actuator. In the invention, the semi-coke and the coal respectively pass through different channels to realize the heat transfer between the walls. After passing the equipment, the semi-coke has been cooled, and coal is partially dehydrated to achieve partial drying, while the temperature will increase to some extent.

Description

technical field [0001] The invention belongs to the technical field of coalification, and in particular relates to a multi-cavity rotary partition wall heat exchange device for heating semi-coke and coal. Background technique [0002] In many modern coal pyrolysis process systems, the temperature of the semi-coke discharged from the pyrolysis equipment can be 400~600°C. In order to store the semi-coke safely, and at the same time efficiently recover or utilize the sensible heat contained in the semi-coke, people have carried out many years of research. Exploration and research of various methods, such as recovery hot air method using fluidized bed, water cooling method using vertical structure and direct mixing method of semi-coke and coal, etc. Among them, the hot air recovery method and the water cooling method both have problems such as low recovery efficiency, low grade of recovered heat energy and inconvenient use, and too large and complex cooling and heat recovery sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04F28D11/04
CPCF28D11/04C10B53/04
Inventor 赵玉良王高锋徐永华姜永涛师浩浩李国莉
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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