A massive four-stage moving bed hydrogen-rich environment retort furnace and retort method thereof

A moving bed and retorting furnace technology, applied in special forms of retorting, direct heating retorting, coke ovens, etc., can solve the problems of a large oil and gas recovery system, low oil product yield, and increase the heat supply in the retorting process, so as to reduce the gas The technical problems of solid separation, the effect of reducing production costs and reducing heat supply

Active Publication Date: 2017-08-11
QUJING ZHONGYI FINE CHEMICAL INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Sanjiang furnace of low-temperature coal dry distillation mainly produces semi-coke (semi-coke) and tar as a by-product, and the coal gas is diluted with flue gas and has a low calorific value; The by-product, coal gas is also diluted by the flue gas, and the calorific value is low and it is not easy to use
The low-temperature dry distillation technology of coal has main problems: low yield and poor quality of oil products, low calorific value of gas, and poor utilization
Regardless of the above-mentioned oil shale retort furnaces, there is a mixture of gases produced by drying and retort distillation, and the gas heat carrier dilutes the pyrolysis gas, which makes the pyrolysis gas have a low calorific value, which is not conducive to later utilization; the water vapor generated by drying is mixed with oil and gas In addition, the oil and gas recovery system is relatively large and complex; in addition, drying, preheating and carbonization are in the same furnace, which increases the heat supply in the carbonization process; and it is difficult to form a hydrogen-rich environment in the carbonization furnace, so that the oil yield is not high and the quality is relatively low. Difference

Method used

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  • A massive four-stage moving bed hydrogen-rich environment retort furnace and retort method thereof
  • A massive four-stage moving bed hydrogen-rich environment retort furnace and retort method thereof
  • A massive four-stage moving bed hydrogen-rich environment retort furnace and retort method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as image 3 As shown, the retort material is lignite lumps with a particle size of 15-18mm accounting for 83%, and not larger than 25mm and larger than 18mm accounting for 17%. The specific steps are as follows:

[0045] 1. Put the above-mentioned lignite block into the drying preheating section of the retort furnace gradually, and at the same time pass 350~400°C heat into the lignite block from the lower part of the drying preheating section through the "Λ" shaped multi-layer dislocation angular box inside it. The flue gas is directly heated to the lignite block until the moisture content is less than 1% and the temperature is greater than 110°C. The dry flue gas is collected from the “Λ”-shaped multi-layer dislocation angular box in the middle of the drying preheating section and then exported. After the hot flue gas is mixed, it is introduced from the lower part of the drying preheating section as a drying heat source. The drying waste gas and flue gas are colle...

Embodiment 2

[0050] The retort material is the oil shale block whose particle size is less than 80mm and not greater than 75mm, accounting for 77%, and not greater than 75mm and greater than 70mm, accounting for 23%. The specific steps are as follows:

[0051] 1. Put the above-mentioned oil shale blocks into the drying and preheating section of the retort furnace gradually, and at the same time, introduce hot flue gas at 300~350°C into the lignite block from the lower part of the drying and preheating section through the multi-layer dislocation angular box inside it , directly heat the oil shale block until the water content is less than 1% and the temperature is greater than 150°C. The dry flue gas is collected from the multi-layer misplaced angular box in the middle of the drying preheating section and then exported, and then mixed with the hot flue gas after being pressurized by the fan Then it is imported from the lower part of the drying preheating section as the heat source of drying ...

Embodiment 3

[0056] Dry distillation materials are lignite lumps with a particle size of 35-40mm accounting for 88% and not larger than 45mm and larger than 35mm accounting for 12%. The specific steps are as follows:

[0057] 1. Put the above-mentioned lignite block into the drying preheating section of the retort furnace gradually, and at the same time, pass the hot flue gas at 330~370°C into the lignite block from the lower part of the drying preheating section through the multi-layer dislocation angular box inside it. The lignite block is directly heated until the moisture content is less than 1% and the temperature is greater than 130°C. The drying flue gas is collected from the multi-layer misplaced angular box in the middle of the drying preheating section and then exported. The lower part of the preheating section is introduced as a heat source for drying waste heat. The drying waste gas and flue gas are collected by the multi-layer misplaced angular box in the upper part of the dryi...

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Abstract

The invention discloses a massive four-stage moving bed carbonization furnace in a hydrogen-rich environment and a carbonization method thereof. The dry distillation furnace includes a drying preheating section, a sealing section, a dry distillation section, and a cooling section arranged sequentially from top to bottom. The upper part of the drying preheating section is provided with a feed port and the lower part is provided with an air inlet, and the upper part is far away from the air inlet end. There is an exhaust port, and the sealing section is connected to the upper drying and preheating section and the lower retort section through the star feeder installed inside. The oil and gas outlet, the cooling section is connected with the dry distillation section, the bottom of the cooling section is provided with a coke discharge port to connect with the coke discharge system and the lower part is provided with a cold gas inlet. The dry distillation method includes the steps of drying and preheating, sealing, dry distillation and cooling. The invention has the characteristics of low power consumption, high energy utilization rate, high oil production rate, good oil quality, less oil and gas dust, high gas calorific value and high resource utilization rate.

Description

technical field [0001] The invention belongs to the technical field of energy and chemical engineering, and specifically relates to a four-stage block with low power consumption, high energy utilization rate, high oil production rate, good oil quality, less oil and gas dust, high calorific value of gas, and high resource utilization rate A moving bed hydrogen-rich ambient retort furnace and a retort method thereof. Background technique [0002] Low-rank coal (such as weak caking coal, non-caking coal, long-bituminous coal, lignite, peat, etc.) and oil shale development, the main way is to obtain high value-added clean energy—oil, gas, and semi-coke—through low-temperature dry distillation. Due to the different nature, composition and characteristics of the two organic minerals and the different purpose of carbonization, the technology of carbonization used is also different. But more oil yields better oil; coal gas has a high calorific value, which is conducive to developme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B49/00C10B53/06
CPCY02P20/129
Inventor 刘长胜罗国林
Owner QUJING ZHONGYI FINE CHEMICAL INDUSTRY CO LTD
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