阅读说明：本技术 一种应用高挥发分/高水分/高硫分/无粘结性煤种生产焦炭的工艺及方法 (Process and method for producing coke by using high-volatile/high-moisture/high-sulfur/non-caking coal ) 是由 不公告发明人 于 2020-06-19 设计创作，主要内容包括：一种应用高挥发分/高水分/高硫分/无粘结性煤种生产焦炭的工艺及方法,该工艺及方法是将无粘结性煤在粘合剂的配合下,通过一级干馏和二级干馏两次干馏的方式生产焦炭产品,主要包括一级干馏流程、二级干馏流程,其中在一级干馏流程中,将无粘结性煤与一级粘合剂进行搅拌、成型后,进行一级干馏得到固碳产物；在二级干馏流程中,将固碳产物与二级粘合剂进行热搅拌、热压成型后,进行二级干馏得到焦炭产品。(A process and method for producing coke by using high volatile matter/high moisture/high sulfur/non-caking coal, the process and method is to produce coke products by a primary dry distillation and a secondary dry distillation twice dry distillation of non-caking coal under the cooperation of a binder, the process mainly comprises a primary dry distillation flow and a secondary dry distillation flow, wherein in the primary dry distillation flow, the non-caking coal and the primary binder are stirred and molded, and then the primary dry distillation is carried out to obtain a carbon-fixing product; in the secondary dry distillation process, the carbon-fixing product and a secondary adhesive are thermally stirred and hot-pressed to form, and then secondary dry distillation is carried out to obtain a coke product.)

1. A process and a method for producing coke by using high-volatile/high-moisture/high-sulfur/non-caking coal are characterized in that: the process and the method are characterized in that raw coal is subjected to primary dry distillation and secondary dry distillation twice to produce coke products under the cooperation of an adhesive, and the process mainly comprises a primary dry distillation flow and a secondary dry distillation flow, wherein in the primary dry distillation flow, the raw coal and the primary adhesive are stirred and molded, and then primary dry distillation is carried out to obtain a molded coal product; in the secondary dry distillation process, the molded coal product and the secondary adhesive are subjected to hot stirring and hot press molding, and then secondary dry distillation is carried out to obtain a coke product.

2. The process and method for producing coke by using high volatile matter/high water content/high sulfur content/non-caking coal as claimed in claim 1, wherein: the first-level dry distillation process mainly comprises a crushing device 1, a drying device, a stirring device, a forming device, a first-level dry distillation furnace and an under-temperature compensation device, wherein:

(1) the primary dry distillation furnace is divided into a preheating section, a dry distillation section and a cooling section, and the preheating section is mainly used for primary dry distillation preheating; the dry distillation section mainly removes moisture (inner water and outer water) and most of volatile components in the molded coal, and driesFirst-stage dry distillation temperature T of distillation section₁The first-stage dry distillation time t is less than 450 DEG C₁The time is more than or equal to 60min, and can be regulated and controlled according to the requirements of the final coke product; the cooling section is cooled by cold coal gas, and the cooled hot coal gas enters the under-temperature compensation device for combustion.

(2) The dry distillation heat of the primary dry distillation furnace is provided by heated circulating hot flue gas, the circulating hot flue gas comes from a hot flue gas circulating device in the secondary dry distillation process, the circulating hot flue gas is heated in an under-temperature compensation device in a mode of fully combusting pure oxygen and coal gas, and the temperature of the flue gas is heated to be more than 700 ℃.

(3) The waste heat flue gas of the primary gas retort enters a drying device and other devices to provide heat, and the waste flue gas after heat supply enters a coal-fired boiler to be treated.

3. The process and method for producing coke by using high volatile matter/high water content/high sulfur content/non-caking coal as claimed in claim 1, wherein: the second-stage dry distillation process mainly comprises a crushing device 2, a thermal stirring device, a hot-press forming device, a second-stage dry distillation furnace, a coal gas combustion device and a hot flue gas circulating device, wherein:

(1) the secondary dry distillation furnace is divided into a preheating section, a dry distillation section, a smoldering section and a cooling section, and the preheating section is mainly used for carrying out secondary dry distillation preheating; secondary dry distillation temperature T of dry distillation section₂The secondary dry distillation time t is less than 700 DEG C₂Not less than 60min, the smoldering temperature of the smoldering section is not more than 500 ℃ and not more than T₃＜T₂Time of smoldering t₃The time is more than or equal to 60min, and can be regulated and controlled according to the requirements of the final coke product; the cooling section is cooled by cold coal gas, and the cooled hot coal gas enters a coal gas combustion device for combustion.

(2) The carbonization heat of the secondary carbonization furnace is provided by burning coal gas by a coal gas combustion device, and the coal gas required by the coal gas combustion device is from coal gas generated by the secondary carbonization flow or coal gas supplemented from the primary carbonization flow.

(3) The hot flue gas of the secondary dry distillation furnace is divided into two parts in a hot flue gas circulating device, one part of the hot flue gas enters an under-temperature compensation device of the primary dry distillation process to be heated, and the other part of the hot flue gas enters a hot stirring device, a hot press forming device and the like to provide heat.

(4) Waste flue gas which is used for supplying heat in devices such as a thermal stirring device, a hot-press forming device and the like enters a coal-fired boiler for treatment.

4. The process and method for producing coke by using high volatile matter/high water content/high sulfur content/non-caking coal as claimed in claim 1, wherein: the dosage of the first-level adhesive is less than that of the second-level adhesive, the first-level adhesive mainly ensures that the molded coal is not loose in the first-level dry distillation process, and the second-level adhesive mainly ensures that the coke product meeting the requirements is produced.

5. The process and method for producing coke by using high volatile matter/high water content/high sulfur content/non-caking coal as claimed in claim 1, wherein: the gas amount generated by the first-stage dry distillation process and the second-stage dry distillation process not only meets the requirement of combustion of an under-temperature compensation device and a gas combustion device, but also can be sold or used for high-value products such as hydrogen production, natural gas production and the like.

6. The process and method for producing coke by using high volatile matter/high water content/high sulfur content/non-caking coal as claimed in claim 1, wherein: the raw coal mainly comprises lignite, bituminous coal, lean coal, anthracite and other coal types and coal types with high volatile, high moisture, high sulfur and no caking property.

The technical field is as follows:

the invention belongs to the field of coking production, and particularly relates to a process and a method for producing coke by using high-volatile/high-moisture/high-sulfur/non-caking coal.

Background art:

the coking raw material adopted by the traditional coking production process is coking coal, and the coking production can not be carried out on lignite, bituminous coal, lean coal, anthracite and coal types with high volatile content, high moisture content, high sulfur content and no caking property, even if the coking raw material adopts a coal blending mode, the coking coal in the coal blending is still the main body, the content is more than 50 percent, the content of other coal blending is low, and meanwhile, the coal blending type and the coal quality have strict requirements, so that the coke productivity is limited by the raw material type. Meanwhile, in the coal resources in China, the storage amount of coking coal is small, and more coking coal is non-adhesive or weakly-adhesive coal which is not suitable for coking production, so that the coke requirements of industries such as steelmaking, metallurgy and the like cannot be supported continuously for a long time. And the discharged waste gas and waste water generated by the traditional coking production process have great pollution to the environment, and the environmental protection treatment cost is high.

Aiming at the current situation and the dilemma of the traditional coking production process, a brand new process and a method for producing coke by using high-volatile/high-moisture/high-sulfur/non-caking coal are provided, so that the problem of large environmental pollution is solved while the coal limitation on the coking raw materials is eliminated.

The invention content is as follows:

based on the current situation, the invention provides a process and a method for producing coke by using high-volatile-component/high-moisture/high-sulfur-component/non-caking coal, which mainly produce coke products by performing primary carbonization and secondary carbonization on non-caking coal under the cooperation of a binder, and the whole process has no wastewater or waste gas discharge.

A process and a method for producing coke by using high-volatile/high-moisture/high-sulfur/non-caking coal are characterized in that: the process and the method are characterized in that non-caking coal is subjected to primary dry distillation and secondary dry distillation under the cooperation of a binder to produce a coke product, and the process mainly comprises a primary dry distillation flow and a secondary dry distillation flow, wherein in the primary dry distillation flow, the non-caking coal and the primary binder are stirred and molded, and then primary dry distillation is carried out to obtain a carbon-fixing product; in the secondary dry distillation process, the carbon-fixing product and a secondary adhesive are thermally stirred and hot-pressed to form, and then secondary dry distillation is carried out to obtain a coke product.

By adopting the process and the method, a set of brand-new coking process and method is established, under the coordination of a primary adhesive, the non-adhesive coal is subjected to primary dry distillation to produce a carbon-fixing product, coal gas and tar, and under the coordination of a secondary adhesive, the carbon-fixing product is subjected to secondary dry distillation to produce a coke product, the heat required in the two dry distillation processes is provided by the combustion of the coal gas generated by the coal gas, and the whole process flow has no waste water and waste gas discharge.

The further technical scheme is that the primary dry distillation process mainly comprises a crushing device 1, a drying device, a stirring device, a forming device, a primary dry distillation furnace and an under-temperature compensation device, and the process flow is as follows:

(1) crushing the non-caking coal by a crushing device 1, feeding the crushed non-caking coal into a drying device, fully stirring the dried non-caking coal powder and a primary adhesive in a stirring device, feeding the mixture into a forming device, and performing primary dry distillation on the formed coal in a primary dry distillation furnace to obtain a carbon-fixing product, coal gas and tar;

(2) the primary dry distillation furnace is an integrated furnace consisting of a preheating section, a dry distillation section and a cooling section, the preheating section performs primary dry distillation preheating on the molded coal, and the primary dry distillation temperature T of the dry distillation section is₁The first-stage dry distillation time t is less than 450 DEG C₁More than or equal to 60min, removing water (inner water and outer water) and most of volatile components in the dry distillation section of the molded coal, and performing first-stage dry distillation at a temperature T₁And first-stage dry distillation time t₁The cooling section is cooled by cold coal gas, and the cooled hot coal gas enters an under-temperature compensation device for combustion;

(3) the under-temperature compensation device fully combusts pure oxygen and coal gas, flue gas heating is carried out on circulating hot flue gas, the heated hot flue gas enters the primary retort to provide heat, the coal gas required by the under-temperature compensation device is provided by the primary retort process, and the hot flue gas from the primary retort enters a drying device and other devices to provide heat.

By adopting the scheme, in the primary dry distillation process, non-adhesive coal in the shapes of coal blocks, coal powder and the like is utilized firstly in a crushing-stirring-forming mode, the coal powder is formed by utilizing the adhesive effect of the primary adhesive, the coal is ensured not to be loose in the transportation process and the primary dry distillation furnace, the phenomena of dust accumulation and blockage of pipelines in the furnace are avoided, meanwhile, the waste of raw materials is reduced, the production cost is saved, the internal water, the external water and most of volatile matters in the coal are removed in the primary dry distillation mode, and the produced carbon fixation product is ensured to meet the requirement of the secondary dry distillation process. The primary carbonization furnace used in the primary carbonization adopts an integrated furnace, the molded coal is simultaneously preheated in the furnace, the primary carbonization and cooling, the production continuity is ensured, the heat consumed by the preheating and the primary carbonization comes from hot flue gas generated by an under-temperature compensation device after heating circulating hot flue gas in a pure oxygen and gas combustion mode, the cooling of a carbon fixation product adopts a cold gas cooling mode, the required cold gas and the gas required by the under-temperature compensation device are both gas generated by the primary carbonization flow, the effects of self-production and self-use and self-energy are achieved, no pollutant is discharged in the whole primary carbonization flow, the environment-friendly production is realized, and the production cost is reduced.

The further technical scheme is that the secondary dry distillation process mainly comprises a crushing device 2, a thermal stirring device, a hot press forming device, a secondary dry distillation furnace, a coal gas combustion device and a hot flue gas circulating device, and the process flow is as follows:

(1) the carbon fixation product is crushed by the crushing device 2 and then is fully thermally stirred with the secondary adhesive in a thermal stirring device, and the molded carbon subjected to the hot pressing molding in a hot pressing molding device enters a secondary retort to be subjected to secondary carbonization to obtain a coke product, coal gas and tar;

(2) the secondary carbonization furnace is an integrated furnace consisting of a preheating section, a carbonization section, a smoldering section and a cooling section, the preheating section performs secondary carbonization preheating on the shaped carbon, and the carbonization temperature T of the carbonization section is the secondary carbonization temperature₂The secondary dry distillation time t is less than 700 DEG C₂Not less than 60min, and the smoldering temperature in the smoldering section is not more than 500 ℃ and not more than T₃＜ T₂Time of smoldering t₃Not less than 60min, and the second-stage dry distillation temperature T₂Smoldering temperature T₃Second stage dry distillation time t₂Smoldering time t₃The cooling section is cooled by cold coal gas, and the cooled hot coal gas enters a coal gas combustion device for combustion;

(3) hot flue gas from the secondary dry distillation furnace is divided into two parts in a hot flue gas circulating device, wherein one part of the hot flue gas enters a hot stirring device, a hot press forming device and the like to provide heat, and the other part of the hot flue gas circulates into an under-temperature compensation device to heat the flue gas;

(4) the coal gas combustion device combusts coal gas generated by the secondary dry distillation process or coal gas supplemented from the primary dry distillation process to provide heat for the secondary dry distillation furnace.

By adopting the scheme, in the secondary dry distillation process, firstly, a crushing-thermal stirring mode is adopted, the crushed carbon fixation product and the secondary adhesive are fully thermally stirred under the condition of a certain temperature, the carbon fixation product is ensured to be fully contacted and adhered with the secondary adhesive, then, a hot press forming mode is utilized, the carbon fixation product and the secondary adhesive are ensured to be fused and adhered and formed in space, and finally, a coke product meeting the requirements is produced in a secondary dry distillation and smoldering mode. The two-stage carbonization furnace used by the two-stage carbonization and smoldering adopts an integrated furnace, the shaped carbon is simultaneously preheated in the furnace, the two-stage carbonization, smoldering and cooling, the production continuity is ensured, meanwhile, the heat consumed by the preheating and the two-stage carbonization is from the combustion of the coal gas in the coal gas combustion device, the cooling of the coke product also adopts the cooling mode of the cold coal gas, the needed cold coal gas and the coal gas needed by the heating of the coal gas combustion device are the coal gas generated by the two-stage carbonization flow or supplemented from the first-stage carbonization flow, the effects of self-production and self-use and self-sufficient energy are achieved, meanwhile, no pollutant is discharged in the whole two-stage carbonization flow, the environment-friendly production is realized, and the production cost is reduced again.

The further technical scheme is that waste flue gas after heat supply in the primary dry distillation process drying device, the secondary dry distillation process thermal stirring device, the hot press forming device and the like is fed into a coal-fired boiler for treatment.

By adopting the scheme, the waste flue gas in the primary dry distillation process and the secondary dry distillation process is introduced into the coal-fired boiler and is treated by the subsequent environment-friendly treatment device of the coal-fired boiler, so that the environment-friendly cost is greatly reduced.

The further technical scheme is that the coal gas produced in the first-stage dry distillation process and the second-stage dry distillation process not only meets the requirements of combustion of the under-temperature compensation device and the coal gas combustion device, but also can be sold or used for producing high-value products such as hydrogen, natural gas and the like.

By adopting the scheme, the coal gas produced in the primary dry distillation process and the secondary dry distillation process can meet the self requirements, can be sold for profit, and can also be used for making products such as hydrogen, natural gas and the like for profit, thereby increasing economic benefits.

The further technical proposal is that the dosage of the first-level adhesive is less than that of the second-level adhesive, the first-level adhesive mainly ensures that the molded coal is not loose in the first-level dry distillation process, and the second-level adhesive mainly ensures that the coke product meeting the requirements is produced.

By adopting the scheme, the primary adhesive used in the primary dry distillation process mainly ensures that the non-adhesive coal powder is formed and is not loose and generates no dust in the coal transportation and primary dry distillation processes. The secondary adhesive used in the secondary dry distillation process is mainly used for ensuring that the fused carbon of the carbon-fixing product and the secondary adhesive can produce a coke product meeting the requirements under the action of secondary dry distillation.

The non-caking coal comprises lignite, bituminous coal, lean coal, anthracite and other coal types as well as coal types with high volatile content, high moisture content, high sulfur content and non-caking property.

By adopting the scheme, the adaptability of the raw materials for producing the coke is expanded, common coal types can be subjected to coking production, the coke capacity is expanded, the production cost is reduced, and abundant coal resources are fully utilized.

The invention utilizes the functions of the first-level adhesive and the second-level adhesive to carry out coke production on the non-caking coal by a way of dry distillation twice, thereby not only expanding the adaptability of raw materials from the source, but also greatly reducing the coking production cost, and generating no waste water, waste gas and dust pollution in the production process.

Drawings

FIG. 1 is a flow chart of the process of the present invention

Detailed Description

The invention is further illustrated by the following examples and figures.

As shown in fig. 1, a process and a method for producing coke by using high volatile matter/high moisture/high sulfur/non-caking coal are characterized in that: the process and the method are characterized in that non-caking coal is subjected to primary dry distillation and secondary dry distillation under the cooperation of a binder to produce a coke product, and the process mainly comprises a primary dry distillation flow and a secondary dry distillation flow, wherein in the primary dry distillation flow, the non-caking coal and the primary binder are stirred and molded, and then primary dry distillation is carried out to obtain a carbon-fixing product; in the secondary dry distillation process, the carbon-fixing product and a secondary adhesive are thermally stirred and hot-pressed to form, and then secondary dry distillation is carried out to obtain a coke product.

By adopting the process and the method, a set of brand-new coking process and method is established, under the coordination of a primary adhesive, the non-adhesive coal is subjected to primary dry distillation to produce a carbon-fixing product, coal gas and tar, and under the coordination of a secondary adhesive, the carbon-fixing product is subjected to secondary dry distillation to produce a coke product, the heat required in the two dry distillation processes is provided by the combustion of the coal gas generated by the coal gas, and the whole process flow has no waste water and waste gas discharge.

The primary dry distillation process mainly comprises a crushing device 1, a drying device, a stirring device, a forming device, a primary dry distillation furnace and an under-temperature compensation device, and the process flow is as follows:

(1) crushing the non-caking coal by a crushing device 1, feeding the crushed non-caking coal into a drying device, fully stirring the dried non-caking coal powder and a primary adhesive in a stirring device, feeding the mixture into a forming device, and performing primary dry distillation on the formed coal in a primary dry distillation furnace to obtain a carbon-fixing product, coal gas and tar;

(2) the first-stage retort furnace is an integrated furnace consisting of a preheating section, a retorting section and a cooling section, and the preheating section performs first-stage retorting preheating on the molded coalFirst-stage dry distillation temperature T of dry distillation section₁The first-stage dry distillation time t is less than 450 DEG C₁More than or equal to 60min, removing water (inner water and outer water) and most of volatile components in the dry distillation section of the molded coal, and performing first-stage dry distillation at a temperature T₁And first-stage dry distillation time t₁The cooling section is cooled by cold coal gas, and the cooled hot coal gas enters an under-temperature compensation device for combustion;

(3) the under-temperature compensation device fully combusts pure oxygen and coal gas, flue gas heating is carried out on circulating hot flue gas, the heated hot flue gas enters the primary retort to provide heat, the coal gas required by the under-temperature compensation device is provided by the primary retort process, and the hot flue gas from the primary retort enters a drying device and other devices to provide heat.

By adopting the method, in the primary dry distillation process, non-adhesive coal in the shapes of coal blocks, coal powder and the like is utilized through crushing, stirring and forming, the coal powder is formed through the adhesive effect of the primary adhesive, the coal briquette is prevented from loosening in the transportation process and the primary dry distillation furnace, the phenomena of dust accumulation and blockage of pipelines in the furnace are avoided, the waste of raw materials is reduced, the production cost is saved, and the internal water, the external water and most of volatile matters in the coal briquette are removed through the primary dry distillation process, so that the produced carbon fixation product meets the requirements of the secondary dry distillation process. The first-stage carbonization furnace used in the first-stage carbonization adopts an integrated furnace, the molded coal is preheated, subjected to the first-stage carbonization and cooled in the furnace at the same time, the production continuity is ensured, the heat consumed by the preheating and the first-stage carbonization comes from hot flue gas generated after the circulating hot flue gas is heated by the under-temperature compensation device, the cooling of the carbon fixation product adopts a cold coal gas cooling mode, the required cold coal gas and the coal gas required by the under-temperature compensation device are both coal gas generated by the first-stage carbonization process, the effects of self-production and self-use and energy self-sufficiency are achieved, no pollutant is discharged in the whole first-stage carbonization process, the environment-friendly production is realized, and the production cost is reduced.

The second-stage dry distillation process mainly comprises a crushing device 2, a thermal stirring device, a hot-press forming device, a second-stage dry distillation furnace, a coal gas combustion device and a hot flue gas circulating device, and the process flow is as follows:

(1) the carbon fixation product is crushed by the crushing device 2 and then is fully thermally stirred with the secondary adhesive in a thermal stirring device, and the molded carbon subjected to the hot pressing molding in a hot pressing molding device enters a secondary retort to be subjected to secondary carbonization to obtain a coke product, coal gas and tar;

(2) the secondary carbonization furnace is an integrated furnace consisting of a preheating section, a carbonization section, a smoldering section and a cooling section, the preheating section performs secondary carbonization preheating on the shaped carbon, and the carbonization temperature T of the carbonization section is the secondary carbonization temperature₂The secondary dry distillation time t is less than 700 DEG C₂Not less than 60min, and the smoldering temperature in the smoldering section is not more than 500 ℃ and not more than T₃＜ T₂Time of smoldering t₃Not less than 60min, and the second-stage dry distillation temperature T₂Smoldering temperature T₃Second stage dry distillation time t₂Smoldering time t₃The cooling section is cooled by cold coal gas, and the cooled hot coal gas enters a coal gas combustion device for combustion;

(3) hot flue gas from the secondary dry distillation furnace is divided into two parts in a hot flue gas circulating device, wherein one part of the hot flue gas enters a hot stirring device, a hot press forming device and the like to provide heat, and the other part of the hot flue gas circulates into an under-temperature compensation device to heat the flue gas;

(4) the coal gas combustion device combusts coal gas generated by the secondary dry distillation process or coal gas supplemented from the primary dry distillation process to provide heat for the secondary dry distillation furnace.

By adopting the method, in the secondary dry distillation process, firstly, a crushing-thermal stirring mode is adopted, the crushed carbon-fixing product and a secondary adhesive are subjected to full thermal stirring under the condition of a certain temperature, the carbon-fixing product is ensured to be fully contacted and adhered with the secondary adhesive, then, a hot press forming mode is utilized, the carbon-fixing product and the secondary adhesive are ensured to be in a fusion and adhesion forming state in space, and finally, a coke product meeting the requirements is produced in a secondary dry distillation and smoldering mode. The two-stage carbonization furnace used by the two-stage carbonization and smoldering adopts an integrated furnace, the shaped carbon is simultaneously preheated in the furnace, the two-stage carbonization, smoldering and cooling, the production continuity is ensured, meanwhile, the heat consumed by the preheating and the two-stage carbonization is from the combustion of the coal gas in the coal gas combustion device, the cooling of the coke product also adopts the cooling mode of the cold coal gas, the needed cold coal gas and the coal gas needed by the heating of the coal gas combustion device are the coal gas generated by the two-stage carbonization flow or supplemented from the first-stage carbonization flow, the effects of self-production and self-use and self-sufficient energy are achieved, meanwhile, no pollutant is discharged in the whole two-stage carbonization flow, the environment-friendly production is realized, and the production cost is reduced again.

And introducing waste flue gas subjected to heat supply in the primary dry distillation flow drying device, the secondary dry distillation flow thermal stirring device, the hot press molding device and the like into a coal-fired boiler for treatment. The coal gas produced in the first-stage dry distillation process and the second-stage dry distillation process not only meets the requirements of combustion of the under-temperature compensation device and the coal gas combustion device, but also can be sold or used for producing high-value products such as hydrogen, natural gas and the like.

By adopting the method, the waste flue gas in the primary dry distillation process and the secondary dry distillation process is introduced into the coal-fired boiler and is treated by the subsequent environment-friendly treatment device of the coal-fired boiler, so that the environment-friendly cost is greatly reduced. Meanwhile, the coal gas produced in the primary dry distillation flow and the secondary dry distillation flow can meet the self requirements, can be sold for profit, and can also be used for making products such as hydrogen, natural gas and the like for profit, thereby increasing economic benefits.

The dosage of the first-level adhesive is less than that of the second-level adhesive, the first-level adhesive mainly ensures that the molded coal is not loose in the first-level dry distillation process, and the second-level adhesive mainly ensures that the coke product meeting the requirements is produced. The non-caking coal comprises lignite, bituminous coal, lean coal, anthracite and other coal types as well as coal types with high volatile content, high moisture content, high sulfur content and no caking property.

By adopting the method, the primary adhesive used in the primary dry distillation process mainly ensures that the non-adhesive coal powder is formed and is not loose and generates no dust in the coal transportation and primary dry distillation processes. The secondary adhesive used in the secondary dry distillation process is mainly used for ensuring that the fused carbon of the carbon-fixing product and the secondary adhesive can produce a coke product meeting the requirements under the action of secondary dry distillation. The adaptability of the raw materials for producing the coke is expanded, common coal types are subjected to coking production, the coke capacity can be expanded, the production cost can be reduced, and abundant coal resources are fully utilized.

The invention utilizes the functions of the first-level adhesive and the second-level adhesive to carry out coke production on the non-caking coal by a way of dry distillation twice, thereby not only expanding the adaptability of raw materials from the source, but also greatly reducing the coking production cost, and generating no waste water, waste gas and dust pollution in the production process.

In addition to the methods disclosed in this example, other embodiments related thereto are also within the scope of the present application.