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

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...

Examples

Embodiment 1

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

[0046] 1. Put the above-mentioned lignite grains into the drying and preheating section of the retort furnace gradually, and at the same time, pass hot flue gas at 250-300°C into the lignite grains from the middle of the middle drying and preheating section through the multi-layer angular box inside, and self-drying The lower part of the preheating section passes hot flue gas at 300-350°C into the lignite grains through the gas distribution flower wall in it, and directly heats the lignite grains until the moisture content is less than 1% and the temperature is greater than 150°C. After drying the waste gas and flue gas 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 dried and preheated lignite p...

Embodiment 2

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

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

[0053] 2. The dried and preheated lignite particles...

Embodiment 3

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

[0058]1. Put the above-mentioned lignite grains into the drying and preheating section of the retort furnace gradually, and at the same time, pass hot flue gas at 250-300°C into the lignite grains from the middle of the middle drying and preheating section through the multi-layer angular box inside, and self-drying The lower part of the preheating section passes hot flue gas at 350-400°C into the lignite particles through the multi-layer horn box inside, and directly heats the lignite particles until the moisture content is less than 1% and the temperature is greater than 140°C, and the waste 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 is discharged to the atmosphere after dust removal;

[0059] 2. The dried and preheated lignite particles ...

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...

Examples

Embodiment 1

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

[0046] 1. Put the above-mentioned lignite grains into the drying and preheating section of the retort furnace gradually, and at the same time, pass hot flue gas at 250-300°C into the lignite grains from the middle of the middle drying and preheating section through the multi-layer angular box inside, and self-drying The lower part of the preheating section passes hot flue gas at 300-350°C into the lignite grains through the gas distribution flower wall in it, and directly heats the lignite grains until the moisture content is less than 1% and the temperature is greater than 150°C. After drying the waste gas and flue gas 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 dried and preheated lignite p...

Embodiment 2

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

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

[0053] 2. The dried and preheated lignite particles...

Embodiment 3

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

[0058]1. Put the above-mentioned lignite grains into the drying and preheating section of the retort furnace gradually, and at the same time, pass hot flue gas at 250-300°C into the lignite grains from the middle of the middle drying and preheating section through the multi-layer angular box inside, and self-drying The lower part of the preheating section passes hot flue gas at 350-400°C into the lignite particles through the multi-layer horn box inside, and directly heats the lignite particles until the moisture content is less than 1% and the temperature is greater than 140°C, and the waste 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 is discharged to the atmosphere after dust removal;

[0059] 2. The dried and preheated lignite particles ...

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