Multi-layer upright tower type duff dust and oil shale distillation plant with stirring function and process

A technology of oil shale and dry distillation, which is applied in special forms of dry distillation, petroleum industry, coke oven, etc., can solve the problems of low energy utilization rate, achieve the effect of reducing post-treatment gas volume, reducing heat load, and reducing pyrolysis

Active Publication Date: 2014-09-17
刘宗礼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the traditional carbonization process, the solids after carbonization are generally coal coke and oil-free shale, but both contain carbon, especially the carbonized shale, if it is directly discharged, the residual carbon will be discarded, and the utilization of energy low rate

Method used

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  • Multi-layer upright tower type duff dust and oil shale distillation plant with stirring function and process
  • Multi-layer upright tower type duff dust and oil shale distillation plant with stirring function and process
  • Multi-layer upright tower type duff dust and oil shale distillation plant with stirring function and process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: select particle diameter figure 2 process flow.

[0020] The fine coal enters the tower from the sealed feeding pipe 18, and three stirring arms 9 are arranged on the stirring shaft sleeve 14, and the high temperature and wear-resistant material groups are installed on the stirring arms 9. Propelled from the outside to the inside, the I-type sealed drop pipe 27 on this layer is set in a circular tube shape, the upper end of the tube is flush with the dry distillation layer, and the lower end passes through the heating layer B, above the heating layer B is the upper dry distillation and drying layer A, set up a high temperature wear-resistant layer, a metal plate layer in turn, and a partition plate 16 with the lower retort layer below, and heat storage materials or heating pipes inside the heating chamber B, such as heat storage ceramics, mixed hot gas ⑦ by purified Retort gas and air are combusted, combustion gas ⑤ is introduced from i and channel C, mixe...

Embodiment 2

[0021] Embodiment 2: choose particle diameter image 3 process flow.

[0022] For the fine coal with high moisture content, the amount of moisture produced by drying is relatively large, and the gas collection pipe is set independently to reduce the processing load of the dry distillation gas in the later stage. To recover heat and water, the dry distillation layer A starts from the fourth layer, and the temperature is gradually increased from 105-550 ° C. The drying layer and the dry distillation layer are isolated by sealing in the downcomer. Other processes are the same as in embodiment 1.

Embodiment 3

[0023] Embodiment 3: choose the oil shale with particle diameter image 3 or Figure 4 process flow.

[0024] Full column retort layer The segment is 11 layers, the combustion segment 3-6 layers, cooling section 3 layers, spray cooling section for 1 layer, in The carbonization temperature of the section is increased from normal temperature to 550°C layer by layer, and more than 95% of the total oil is obtained by dry distillation. The oil, volatile matter, and carbon residue that have not been dry-distilled enter the combustion section, and 95-98% of the carbon residue in the shale is burned. Provide heat for the retort furnace, the retort process is similar to that of Example 1; the retort time is 30-60min, the retort oil shale produces 95kg of shale oil per ton, the retort gas is 150Nm3, and the calorific value is 4500kcal / Nm3.

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Abstract

The invention discloses a multi-layer upright tower type duff dust and oil shale distillation plant with a stirring function and a process, and relates to a small-particle size solid fuel distillation device. An inner barrel is arranged at the inner side of an outer barrel; a sealing subassembly is arranged at the top end of the outer barrel; a stirring motor is connected with the upper part of the sealing subassembly through a stirring shaft; a sealed feeding tube is arranged at the bottom end of the outer barrel; a stirring supporter is arranged above the sealed feeding tube; a water spraying tube is arranged above the stirring supporter; a lower tube plate is arranged above the water spraying tube; an upper tube plate is arranged below the lower tube plate; a heat tube is arranged between the lower tube plate and the upper tube plate; a I-type hole material disc is arranged above the upper tube plate, and a II-type hole material disc is arranged above the I-type hole material disc. The distillation of small-particle size solid fuel is achieved; a multi-layer upright tower is adopted; the moisture generated by drying can be independently discharged when the material with high water content is dried; thermal load for gas treatment is reduced; gradual stirring is adopted, so that the heat transfer efficiency is high; and the heat utilization efficiency is improved, and the distillation time is shortened.

Description

Technical field: [0001] The invention relates to a dry distillation device for small particle size solid fuel, in particular to a multi-layer vertical tower type fine coal and oil shale dry distillation production device and process with stirring. Background technique: [0002] The existing coal and oil shale low-temperature carbonization process is mainly aimed at bulk raw materials with a particle size greater than 13mm. The carbonization gas and air are used to burn in the tunnel of the carbonization furnace, and the hot gas of the combustion is used for direct carbonization. The final carbonization gas is mixed with The combustion tail gas reduces the content of effective components in the retort gas, and the usable value is low. In this process, the retort gas and combustion gas must pass through the retort layer. Therefore, there must be gaps in the retort raw material layer to facilitate the The gas is discharged, and the high temperature of the solid after carbonizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/04C10B53/06C10B57/10C10B57/00
Inventor 刘宗礼
Owner 刘宗礼
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