Internally heated pulverized coal dry distillation rotary furnace and pulverized coal dry distillation device

A rotary furnace, internal heating technology, applied in special forms of dry distillation, direct heating dry distillation, coke ovens, etc. The effect of fast solution speed, small amount of dust and high heating efficiency

CN103992806AInactive Publication Date: 2014-08-20CHANGAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-08-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an internally heated pulverized coal dry distillation rotary furnace and a pulverized coal dry distillation device. The rotary furnace comprises a furnace body, wherein a heat carrier is fixedly arranged in the furnace body and can store heat after being heated, and pulverized coal is drily distilled when flowing through the heated heat carrier in the rotating process of the furnace body. The pulverized coal dry distillation device comprises two sets of the internally heated pulverized coal dry distillation rotary furnaces, and the two sets of rotary furnaces work intermittently, wherein when the pulverized coal is fed into one set of internally heated pulverized coal dry distillation rotary furnace, the heat carrier in the other set of internally heated pulverized coal dry distillation rotary furnace is heated. The two sets of rotary furnaces can be adopted for realizing continuous coal feeding and discharge; the other rotary furnace is heated by hot flue gas when the pulverized coal is pyrolyzed in one rotary furnace, reversing is performed after heating and pyrolysis, so that continuous feeding and discharge are realized. When the device is used for pulverized coal pyrolysis, the process is simplified, the flow is short, the operation is reliable, and the utilization rate of heat is high.
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Description

technical field

[0001] The invention relates to coal dry distillation pyrolysis technology, in particular to an internal heat rotary pulverized coal pyrolysis process and device. Background technique

[0002] Traditional coal pyrolysis has a variety of forms, according to the heat transfer mode: gas heat carrier, solid heat carrier, external heat type, internal and external heat combination type and other forms. From the perspective of coal quality utilization, removing volatile matter in coal to obtain gas and tar is a common goal of coal low-temperature pyrolysis, and the most difficult thing is the pyrolysis of pulverized coal.

[0003] When pulverized coal pyrolysis uses circulating gas as the gas heat carrier, the heating speed is fast, the heating efficiency is high, and the equipment is simple, but there are problems of forced cooling and repeated heating when the gas heat carrier is recycled, resulting in excessive overall energy consumption. Coupled with coal gasif...

Examples

Embodiment

[0038] refer to Figure 1-Figure 3 , the device of this embodiment includes:

[0039] Dry coal bunker 2 is for storing pulverized coal to be pyrolyzed;

[0040] Feeding reamer 3, crushing the raw material and sending it into the retort rotary furnace;

[0041] Internal heating pulverized coal carbonization rotary furnace 1 is two internal heating rotary furnaces with built-in fixed heat carrier, specifically, internal heating pulverized coal carbonization rotary furnace A (hereinafter referred to as furnace A) and internal heating pulverized coal carbonization rotary furnace B (hereinafter referred to as Furnace B);

[0042] The furnace body of the internal heating type pulverized coal carbonization rotary furnace of this embodiment is provided with a plurality of pulverized coal conveying passages 11, specifically, a plurality of cylinders 13 are installed coaxially with the furnace body, and the plurality of cylinders 13 are concentric circles The pulverized coal conveyin...