Powder coal dry distillation method and device

A technology of pulverized coal and dry distillation, which is applied in special forms of dry distillation, direct heating dry distillation, petroleum industry, etc. Effects of Dosage and Circulation

Active Publication Date: 2014-02-12
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a method and device for dry distillation of pulverized coal, so as to solve the problems of complex process, large circulation of solid heat carrier, and gas compressor required for gas heat carrier. Transportation and other issues

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  • Powder coal dry distillation method and device
  • Powder coal dry distillation method and device
  • Powder coal dry distillation method and device

Examples

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Embodiment

[0049] exist figure 1 On the small-scale test device of the pulverized coal carbonization device shown, 6 groups of tests (Example 1-Example 6) were carried out according to the steps of the pulverized coal carbonization method described in the specific implementation mode of this specification. The pulverized coal raw material 2 is Yima pulverized coal raw material, and its properties are shown in Table 1; the feed rate (the weight flow rate of the pulverized coal raw material 2 entering the pulverized coal raw material feed pipe 3) is 3kg / h (3 kg / hour).

[0050] In Examples 1 to 6, the temperature of the semi-coke bed in the stripping section 17 is 500°C, and the stripping medium is the stripping steam 81 at 500°C. The stripped semi-coke that enters the heat extractor 14 through the semi-coke discharge pipe 16 is cooled to 80° C. by heat extraction medium (de-salted water at ambient temperature). The absolute pressure at the outlet of the tubular charcoal burner 7 is 0.001-...

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Abstract

The invention discloses a powder coal dry distillation method and device, and aims to solve the problems that the technical process is, the circulation amount of the solid heat carrier is high, the gas heat carrier needs to be delivered by a gas compressor and the like in the existing powder coal dry distillation technique. The dry distillation method comprises the following steps: A. a powder coal raw material (2), and a high-temperature solid heat carrier and a high-temperature oxygen-free flue gas from a tubular charcoal burner (7) are mixed in a mixing tube (4) and enters a dry distillation reactor (5) to perform dry distillation reaction; B. after entrained oil gas is stripped out from semicoke formed in the step A in a stripping section (17), part of the semicoke is cooled and discharged out of the dry distillation device, and the other part enters the tubular charcoal burner; and C. the semicoke entering the tubular charcoal burner contacts charcoal burning air (12) to perform charcoal burning, thereby generating the high-temperature solid heat carrier and high-temperature oxygen-free flue gas. The invention also discloses a powder coal dry distillation device for implementing the dry distillation method. The method and device can be used for dry distillation processing of various types of powder coal.

Description

technical field [0001] The invention belongs to the technical field of pulverized coal dry distillation, and relates to a pulverized coal dry distillation method and device. Background technique [0002] With the increasing scarcity of world oil resources and the advent of the era of high oil prices, the use of coal dry distillation technology to produce coal tar has become an important plan to replace and supplement oil resources. The products of coal dry distillation are semi-coke, oil and gas (mainly coal tar and liquefied gas) and coal gas; the yield and composition of coal dry distillation products depend on the properties of raw coal and processing conditions (mainly temperature and time). [0003] The pulverized coal dry distillation method introduced in the article "Lignite Solid Heat Carrier Dry Distillation New Technology Industrial Test" published in the first issue of February 1995 in the "Journal of Dalian University of Technology" is to crush the raw coal to le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04C10B49/02C10B49/16
Inventor 王文柯武立宪王龙延陈曼桥汤海涛樊麦跃陈章淼张亚西黄延召
Owner CHINA PETROCHEMICAL CORP
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