CN215250659U - Novel coal pyrolysis gasification device - Google Patents
Novel coal pyrolysis gasification device Download PDFInfo
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- CN215250659U CN215250659U CN202121281785.6U CN202121281785U CN215250659U CN 215250659 U CN215250659 U CN 215250659U CN 202121281785 U CN202121281785 U CN 202121281785U CN 215250659 U CN215250659 U CN 215250659U
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Abstract
The utility model provides a novel coal pyrolysis gasification device, the device is vertical furnace structural style, and from the top down is in proper order: the device comprises a dry distillation section, a material regulating and controlling device and a gasification section, wherein the material regulating and controlling device is arranged at the bottom of the dry distillation section, and the material regulating and controlling device is connected with the top of the gasification section through a high-temperature resistant channel. The method not only realizes the clean and efficient utilization of coal, but also can reduce the production cost and the environmental protection treatment difficulty, and lays a good foundation for low-cost, pollution-free and large-scale application.
Description
Technical Field
The utility model relates to a coal pyrolysis technical field and coal gasification technical field specifically are a novel coal pyrolysis gasification device.
Background
The traditional coal utilization technology mainly comprises a coal pyrolysis technology and a coal gasification technology, wherein the coal pyrolysis technology mainly separates out substances such as volatile matters, tar and the like in coal to form coal gas, and residual solid substances are coked to form coke; the coal gasification technology is to react coal with a gasification agent under a high-temperature environment to generate water gas. The two coal utilization technologies can cleanly utilize coal, but a large amount of gasification wastewater and coking wastewater can be generated in the production process, so that the environmental protection treatment is difficult, the environmental protection problem is prominent, and the coal utilization technology cannot be applied on a large scale; meanwhile, due to the limitation of a technical mechanism and a furnace type structure, the coal pyrolysis technology and the coal gasification technology both need to use specified raw material coal, and the coal is often limited in yield, strong in regionality and high in price, so that the production cost is high, the economic benefit is poor, and the coal can not be applied on a large scale.
Therefore, the utility model provides a novel coal pyrolysis gasification device solves above-mentioned problem, realizes low-cost, pollution-free, extensive application.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel coal pyrolysis gasification device to solve the problem of mentioning among the above-mentioned background art. In particular to a novel coal pyrolysis gasification device which is characterized in that: the device is in a vertical furnace structure form, and sequentially comprises the following steps from top to bottom: the device comprises a dry distillation section, a material regulating and controlling device and a gasification section, wherein the material regulating and controlling device is arranged at the bottom of the dry distillation section, and the material regulating and controlling device is connected with the top of the gasification section through a high-temperature resistant channel.
By adopting the coal pyrolysis gasification device, the high-temperature clean carbon of the gas retort is used as a gasification raw material and directly enters the gasification furnace for reaction in a mode of combining the gas retort and the gasification furnace and separating the material regulation and control device, so as to generate dry-distilled gas and water gas. The device can use low-rank pulverized coal with large reserve and low price as raw materials, and perform low-temperature anaerobic dry distillation in the dry distillation furnace to generate raw coke oven gas and high-temperature clean carbon, wherein the quality of the high-temperature clean carbon is similar to that of coke, thereby completely meeting the requirements of gasification raw materials, and realizing the purposes of wide raw material selection range and reducing raw material cost; simultaneously, the raw gas is independently cooled and washed to obtain dry distillation gas and low-temperature tar, substances such as benzene, phenol and the like in the raw gas are mixed in the low-temperature coal tar and collected and stored, and waste water generated by cooling the raw gas can be recycled; the water gas does not contain tar and other pollution byproducts, the wastewater generated by cooling can be recycled only by simple treatment, the scale of later environmental protection is small, and the flow is simple. Therefore, the coal pyrolysis gasification device can realize low-cost, pollution-free and large-scale technical application.
The further technical scheme is that the dry distillation section is of an oxygen-free dry distillation structure, namely a dry distillation heat source is not in contact with dry distillation materials, and the dry distillation heat source is from high-temperature water gas and external heating flue gas of the gasification section.
According to a further technical scheme, the upper portion of the dry distillation section is provided with a high-temperature water gas inlet main pipe and a high-temperature water gas outlet main pipe, a plurality of high-temperature water gas heat exchange pipes are longitudinally arranged on the upper portion of the dry distillation section corresponding to the inner space, each high-temperature water gas heat exchange pipe is an independent heat exchange element, and each high-temperature water gas heat exchange pipe is respectively connected with the high-temperature water gas inlet main pipe and the high-temperature water gas outlet main pipe.
According to a further technical scheme, the lower portion of the dry distillation section is provided with a hot flue gas inlet main pipe and a hot flue gas outlet main pipe, a plurality of layers of hot flue gas heat exchange pipes are transversely arranged in the inner space corresponding to the lower portion of the dry distillation section, each layer of hot flue gas heat exchange pipe is connected in parallel, the hot flue gas heat exchange pipes in the layers are connected in series, and the hot flue gas heat exchange pipes in the lowest layer and the hot flue gas heat exchange pipes in the uppermost layer are respectively connected with the hot flue gas inlet main pipe and the hot flue gas outlet main pipe.
The further technical scheme is that the gasification section is of a conventional gasification furnace structure, and high-temperature water gas in the gasification section enters a high-temperature water gas inlet main pipe at the upper part of the dry distillation section through a high-temperature water gas pipeline.
By adopting the technical scheme, the device adopts a composite indirect heat exchange mode, the high-temperature water gas of the gasification section is adopted as a heat source at the upper part of the dry distillation section, and the heat exchange is carried out between the longitudinally arranged heat exchange tube and the molded coal at the upper part of the dry distillation section, so that the waste heat of the high-temperature water gas is fully utilized, and the pyrolysis cost is reduced. The outer heating flue gas is adopted as a heat source at the lower part of the dry distillation section, the heat exchange is carried out between the outer heating flue gas and the molded coal with a certain temperature through the transversely arranged heat exchange tubes to heat and raise the temperature, the dry distillation temperature in the dry distillation section is ensured to meet the dry distillation requirement, the volatile matters, the tar, the benzene, the phenol and other matters in the molded coal are completely separated out, meanwhile, the dry distillation temperature of the dry distillation section can be controlled by regulating and controlling the smoke temperature of the outer heating flue gas, and the working condition of the dry distillation section is controllable.
Through the scheme and the device, the vertical furnace body consisting of the gas retort, the material regulation and control device and the gasification furnace is used for cleanly utilizing coal, low-rank pulverized coal with large reserve and low price can be converted into high-temperature clean carbon with dry-distilled gas and quality similar to coke, the high-temperature clean carbon is used as a gasification raw material to produce high-quality water gas, the content of pollution byproducts such as benzene and phenol in waste water generated by post-treatment of the dry-distilled gas and the water gas is extremely low, the environmental protection treatment is simple, the environmental protection scale is small, the operation cost is low, clean and efficient utilization of the coal is realized, the production cost can be reduced, the environmental protection treatment difficulty is reduced, and a good foundation is laid for low-cost, pollution-free and large-scale application.
Drawings
FIG. 1 is a schematic view of the present invention
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. In the figure 1, 1 is a dry distillation section, 2 is a material regulating device, 3 is a gasification section, 4 is a high-temperature water gas inlet main pipe, 5 is a high-temperature water gas outlet main pipe, 6 is a high-temperature water gas heat exchange pipe, 7 is a hot flue gas inlet main pipe, 8 is a hot flue gas outlet main pipe, 9 is a hot flue gas heat exchange pipe, and 10 is a crude gas outlet pipeline.
Referring to fig. 1, the utility model provides a novel coal pyrolysis gasification device, which is characterized in that: the device is in a vertical furnace structure form, and sequentially comprises the following steps from top to bottom: the device comprises a dry distillation section (1), a material regulating and controlling device (2) and a gasification section (3), wherein the material regulating and controlling device (2) is installed at the bottom of the dry distillation section, and the material regulating and controlling device (2) is connected with the top of the gasification section through a high-temperature-resistant channel.
By adopting the coal pyrolysis gasification device, the mode of combining the dry distillation furnace and the gasification furnace and separating the material regulation and control device is adopted, the material regulation and control device at the bottom of the dry distillation section controls the flow quantity of the high-temperature clean carbon in the dry distillation furnace, and the high-temperature clean carbon directly enters the gasification furnace to be used as a gasification raw material to participate in reaction to generate dry distillation coal gas and water gas. The device can use low-rank pulverized coal with large reserve and low price as raw materials, and perform low-temperature anaerobic dry distillation in the dry distillation furnace to generate raw coke oven gas and high-temperature clean carbon, wherein the quality of the high-temperature clean carbon is similar to that of coke, thereby completely meeting the requirements of gasification raw materials, and realizing the purposes of wide raw material selection range and reducing raw material cost; simultaneously, the raw gas is independently cooled and washed to obtain dry distillation gas and low-temperature tar, substances such as benzene, phenol and the like in the raw gas are mixed in the low-temperature coal tar and collected and stored, and waste water generated by cooling the raw gas can be recycled; the water gas does not contain tar and other pollution byproducts, the wastewater generated by cooling can be recycled only by simple treatment, the scale of later environmental protection is small, and the flow is simple. Therefore, the coal pyrolysis gasification device can realize low-cost, pollution-free and large-scale technical application.
The dry distillation section is of an oxygen-free dry distillation structure, namely a dry distillation heat source is not in contact with dry distillation materials, and the dry distillation heat source is from high-temperature water gas and external heating flue gas of the gasification section.
The dry distillation section (1) upper portion is equipped with high temperature water gas and advances to be responsible for (4) and give vent to anger and be responsible for (5), and dry distillation section (1) upper portion corresponds inner space longitudinal arrangement many high temperature water gas heat exchange tubes (6), and every high temperature water gas heat exchange tube (6) are solitary heat transfer original paper, and every high temperature water gas heat exchange tube (6) are connected with high temperature water gas respectively and advance to be responsible for (4) and give vent to anger and be responsible for (5).
By implementing the device, the upper space of the dry distillation section is divided into a plurality of spaces with the same size by the high-temperature water gas heat exchange tubes which are longitudinally arranged, and the briquette at the upper part indirectly exchanges heat with the high-temperature water gas in the small spaces to realize the preheating and the temperature rise of the briquette; all high-temperature water gas heat exchange tubes on the upper part of the dry distillation section are connected with a high-temperature water gas inlet main tube and a high-temperature water gas outlet main tube, high-temperature water gas enters the upper part of the dry distillation section through the high-temperature water gas inlet main tube, is divided into a plurality of air flows through the high-temperature water gas heat exchange tubes for heat exchange, and then enters the high-temperature water gas outlet main tube to be discharged out of the upper part of the dry distillation section in a unified manner after heat exchange.
The dry distillation section (1) lower part is equipped with hot flue gas and admits air and is responsible for (7) and give vent to anger and be responsible for (8), and many hot flue gas heat exchange tubes (9) of multilayer are transversely arranged to dry distillation section (1) lower part corresponding inner space, and every layer of hot flue gas heat exchange tube (9) is the parallel mode, and layer-to-layer hot flue gas heat exchange tube (9) are the tandem mode, and lower floor and superiors' hot flue gas heat exchange tube (9) are connected with hot flue gas respectively and admit air and be responsible for (7) and give vent to anger and be responsible for (8).
By implementing the device, the space at the lower part of the dry distillation section is divided into spaces with the same size by the hot flue gas heat exchange tubes which are transversely arranged, and the molded coal and the external hot flue gas are subjected to indirect heat exchange in the spaces to realize dry distillation and coking. The external heat supply flue gas enters the lower part of the carbonization furnace through the hot flue gas inlet main pipe, exchanges heat through hot flue gas heat exchange pipes arranged layer by layer and is collected in the external heat supply flue gas outlet main pipe to be uniformly discharged out of the lower part of the carbonization section.
The gasification section (3) is of a conventional gasification furnace structure, and high-temperature water gas in the gasification section enters a main high-temperature water gas inlet pipe (4) at the upper part of the dry distillation section through a high-temperature water gas pipeline.
The coal pyrolysis gasification device is used, the vertical furnace body composed of the gas retort, the material regulation and control device and the gasification furnace is used for clean utilization of coal, low-rank pulverized coal with large reserve and low price can be converted into dry distillation coal gas and high-temperature clean carbon with quality similar to that of coke, the high-temperature clean carbon is used as a gasification raw material to produce high-quality water gas, the content of pollution byproducts such as benzene and phenol in waste water generated by post-treatment of the dry distillation coal gas and the water gas is extremely low, the environmental protection treatment is simple, the environmental protection scale is small, the operation cost is low, clean and efficient utilization of coal is realized, the production cost can be reduced, and the environmental protection treatment difficulty is reduced. Meanwhile, in a combined indirect heat exchange mode, the high-temperature water gas of the gasification section is adopted as a heat source at the upper part of the dry distillation section, and heat exchange is carried out between the high-temperature water gas and the molded coal at the upper part of the dry distillation section through the longitudinally arranged heat exchange tubes, so that the waste heat of the high-temperature water gas is fully utilized, and the pyrolysis cost is reduced. The outer heating flue gas is adopted as a heat source at the lower part of the dry distillation section, the heat exchange is carried out between the outer heating flue gas and the molded coal with a certain temperature through the transversely arranged heat exchange tubes to heat and raise the temperature, the dry distillation temperature in the dry distillation section is ensured to meet the dry distillation requirement, the volatile matters, the tar, the benzene, the phenol and other matters in the molded coal are completely separated out, meanwhile, the dry distillation temperature of the dry distillation section can be controlled by regulating and controlling the smoke temperature of the outer heating flue gas, and the working condition of the dry distillation section is controllable.
In addition to the methods disclosed in this example, other embodiments related thereto are also within the scope of the present application.
Claims (5)
1. A novel coal pyrolysis gasification device is characterized in that: the device is in a vertical furnace structure form, and sequentially comprises the following steps from top to bottom: the device comprises a dry distillation section, a material regulating and controlling device and a gasification section, wherein the material regulating and controlling device is arranged at the bottom of the dry distillation section, and the material regulating and controlling device is connected with the top of the gasification section through a high-temperature resistant channel.
2. The novel coal pyrolysis gasification device of claim 1, wherein: the dry distillation section is of an oxygen-free dry distillation structure, namely a dry distillation heat source is not in contact with dry distillation materials, and the dry distillation heat source is from high-temperature water gas and external heating flue gas of the gasification section.
3. The novel coal pyrolysis gasification device of claim 2, wherein: the dry distillation section upper portion is equipped with the high temperature water gas and advances to be responsible for and give vent to anger and be responsible for, and dry distillation section upper portion corresponds inner space longitudinal arrangement many high temperature water gas heat exchange tubes, and every high temperature water gas heat exchange tube is solitary heat transfer original paper, and every high temperature water gas heat exchange tube is responsible for and is connected with the high temperature water gas is advanced to be responsible for and is given vent to anger respectively.
4. The novel coal pyrolysis gasification device of claim 2, wherein: the hot flue gas inlet main pipe and the hot flue gas outlet main pipe are arranged on the lower portion of the dry distillation section, a plurality of layers of hot flue gas heat exchange pipes are transversely arranged in the inner space corresponding to the lower portion of the dry distillation section, each layer of hot flue gas heat exchange pipe is in a parallel connection mode, the hot flue gas heat exchange pipes on the layers are in a series connection mode, and the hot flue gas heat exchange pipes on the lowermost layer and the hot flue gas heat exchange pipes on the uppermost layer are respectively connected with the hot flue gas inlet main pipe and the hot flue gas outlet main pipe.
5. The novel coal pyrolysis gasification device of claim 1, wherein: the gasification section is of a conventional gasification furnace structure, and high-temperature water gas in the gasification section enters a high-temperature water gas inlet main pipe at the upper part of the dry distillation section through a high-temperature water gas pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121281785.6U CN215250659U (en) | 2021-06-09 | 2021-06-09 | Novel coal pyrolysis gasification device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121281785.6U CN215250659U (en) | 2021-06-09 | 2021-06-09 | Novel coal pyrolysis gasification device |
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| CN215250659U true CN215250659U (en) | 2021-12-21 |
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