Small-particle four-section moving bed dry distillation furnace with hydrogen-enriched environment and dry distillation method of small-particle four-section moving bed dry distillation furnace

A technology of moving bed and retort furnace, which is applied in special forms of retort, direct heating retort, coke oven, etc. It can solve the problems of poor oil quality, waste of resources, fine particle size of semi-coke products, etc., and achieve high oil yield and oil The effect of high product quality, low friction probability and low degree of breakage

Active Publication Date: 2015-06-24
QUJING ZHONGYI FINE CHEMICAL INDUSTRY CO LTD
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AI Technical Summary

Problems solved by technology

[0003]At present, most of the coal or oil shale low-temperature carbonization technology adopts block gas heat carrier carbonization technology. The low-temperature carbonization of oil shale includes Fushun Furnace, Maoming Furnace, Jilin Chengda Furnace, Estonia’s Kivit Furnace, Brazil’s Petrosex Furnace, etc., but the following problems generally exist: First, coal or oil with particle size <15mm Shale cannot be retorted, resulting in a great waste of resources, especially in the oil shale industry; second, the heat source of retort is hot flue gas, the oil production rate is low, and the oil quality is relatively poor; third, the drying of coal or oil shale It is not separated from dry distillation, and integrated into one, resulting in a large load on the oil and gas recovery system and waste water treatment system; fourth, the pyrolysis gas is dilu

Method used

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  • Small-particle four-section moving bed dry distillation furnace with hydrogen-enriched environment and dry distillation method of small-particle four-section moving bed dry distillation furnace
  • Small-particle four-section moving bed dry distillation furnace with hydrogen-enriched environment and dry distillation method of small-particle four-section moving bed dry distillation furnace
  • Small-particle four-section moving bed dry distillation furnace with hydrogen-enriched environment and dry distillation method of small-particle four-section moving bed dry distillation furnace

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0044] Example 1

[0045] Such as figure 1 As shown, the dry distillation material is lignite particles with a particle size of 5-6mm accounting for 94%. The specific steps are as follows:

[0046] 1. Gradually put the above-mentioned lignite particles into the drying and preheating section of the dry distillation furnace, and at the same time pass the hot flue gas at 250-300℃ into the lignite particles through the middle part of the self-drying and preheating section through the multi-layer angular box inside, and self-dry In the lower part of the preheating section, hot flue gas of 300~350℃ is passed into the lignite particles through the gas distribution wall inside, and the lignite particles are directly heated to moisture 150℃, and the exhaust gas and flue gas are dried after collection It is discharged through the exhaust port on the upper side of the drying and preheating section, and discharged to the atmosphere after dust removal;

[0047] 2. The lignite particles after...

Example Embodiment

[0050] Example 2

[0051] The dry distillation material is oil shale particles with a particle size of 13-15mm accounting for 89%. The specific steps are as follows:

[0052] 1. Gradually put the above-mentioned oil shale particles into the drying and preheating section of the retort furnace, and at the same time, from the middle of the drying and preheating section, through the multi-layer angular box inside, hot smoke of 200~250℃ is passed into the oil shale particles. From the lower part of the drying and preheating section, through the multi-layer angular box inside, the hot flue gas of 300-350℃ is passed into the oil shale particles, and the oil shale particles are directly heated to moisture At 120°C, the dried waste gas and flue gas are collected and discharged through the exhaust port through the multi-layer angular box on the upper side of the drying and preheating section, and discharged to the atmosphere after dust removal;

[0053] 2. The lignite particles after dry...

Example Embodiment

[0056] Example 3

[0057] The dry distillation material is lignite particles with a particle size of 10-12mm accounting for 88%. The specific steps are as follows:

[0058] 1. Gradually put the above-mentioned lignite particles into the drying and preheating section of the dry distillation furnace, and at the same time pass the hot flue gas at 250-300℃ into the lignite particles through the middle part of the self-drying and preheating section through the multi-layer angular box inside, and self-dry In the lower part of the preheating section, hot flue gas of 350~400℃ is passed into the lignite particles through the multi-layer angular box inside, and the lignite particles are directly heated to moisture 140℃, and the exhaust gas and flue gas are dried. After collection, it is discharged through the exhaust port on the upper side of the drying and preheating section, and discharged to the atmosphere after dust removal;

[0059] 2. The lignite particles after drying and preheatin...

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Abstract

The invention discloses a small-particle four-section moving bed dry distillation furnace with a hydrogen-enriched environment and a dry distillation method of the small-particle four-section moving bed dry distillation furnace. According to the dry distillation furnace, a feeding hole is formed in the upper part of a drying and preheating section, an upper air inlet and a lower air inlet are respectively formed in the middle side and lower side of the drying and preheating section, and an air outlet is formed in the end, far away from the upper air inlet, of the drying and preheating section; the drying and preheating section is vertically communicated with a dry distillation section through a sealing section; a medium-temperature air inlet is formed in the middle side of the dry distillation section, a high-temperature air inlet is formed in the lower side of the dry distillation section, and an oil gas outlet communicated with an oil gas recovery system arranged on the outer wall of the dry distillation section is formed in the medium-upper side of the dry distillation section; a cold coal gas inlet is formed in the middle side of a cooling section, a coal gas outlet is formed in the upper side of the cooling section, a water inlet is formed in the lower side of the cooling section, and a water outlet is formed in the middle side of the cooling section; and the cooling section is provided with a cooling heat exchanger communicated with the water inlet and the water outlet. The dry distillation method comprises the steps of drying and preheating; sealing; carrying out dry distillation; and cooling. The small-particle four-section moving bed dry distillation furnace with the hydrogen-enriched environment has the characteristics that the power consumption is low, the energy utilization rate and oil yield are high, the quality of an oil product is good, the dust content of oil gas is low, and the utilization rate of resources is high.

Description

technical field [0001] The invention belongs to the technical field of energy and chemical engineering, and in particular relates to a hydrogen-rich environment of a small particle four-stage moving bed with low power consumption, high energy utilization rate, high oil production rate, good oil quality, less oil and gas dust, and high resource utilization rate Dry distillation furnace and its dry distillation method. Background technique [0002] my country is rich in coal resources. Except for some of the raw coal used for coking and conversion processing, most of it is used for direct combustion, which not only has low thermal efficiency and serious damage to the environment, but also the hydrogen-rich components with high economic value in coal cannot be obtained. Reasonable use. Moreover, my country's oil shale and oil sand reserves are abundant, and the potential for resource development is huge. [0003] At present, most of the coal or oil shale low-temperature carbon...

Claims

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Application Information

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IPC IPC(8): C10B53/04C10B53/06C10B49/18C10B57/10C10B39/00C10B57/00C10G1/00
CPCC10B39/00C10B49/18C10B53/04C10B53/06C10B57/00C10B57/10
Inventor 刘长胜罗国林
Owner QUJING ZHONGYI FINE CHEMICAL INDUSTRY CO LTD
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