CN211339387U - Low order coal dry distillation apparatus for producing - Google Patents
Low order coal dry distillation apparatus for producing Download PDFInfo
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- CN211339387U CN211339387U CN201921493834.5U CN201921493834U CN211339387U CN 211339387 U CN211339387 U CN 211339387U CN 201921493834 U CN201921493834 U CN 201921493834U CN 211339387 U CN211339387 U CN 211339387U
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Abstract
The embodiment of the utility model discloses low order coal dry distillation apparatus for producing, apparatus for producing includes interconnect's water treatment facilities and coal dry distillation device, water treatment facilities is arranged in carrying out the moisture separation of preliminary treatment in with the low order coal to the low order coal and comes out, coal dry distillation device is used for carrying out the dry distillation to the low order coal after the preliminary treatment. The water in the original low-rank coal is separated in advance before coal dry distillation, the temperature during water separation is low, dry distillation objects in the low-rank coal cannot overflow, the separated water contains fewer impurity components, the water can be reused as clean water, the sewage amount in the coal dry distillation process is greatly reduced, and the sewage treatment amount and the treatment cost are effectively reduced.
Description
Technical Field
The embodiment of the utility model provides a metallurgical coking technical field, concretely relates to low order coal dry distillation apparatus for producing.
Background
Coal dry distillation technology is one of the important processes in coal chemical industry, and refers to the thermal decomposition of coal under the condition of air isolation to generate products such as coal, coal tar, coal gas and the like. The yield and the composition of the coal carbonization products depend on the coal quality of the raw materials and processing conditions (mainly temperature and time), the carbonization final temperature is different, and the coal carbonization products are also different. According to the difference of the final heating temperature, the method can be divided into high-temperature dry distillation (900 ℃ C.), medium-temperature dry distillation (700 ℃ C.) and low-temperature dry distillation (500 ℃ C.) and 600 ℃ C.). The low-temperature dry distillation solid product is black semicoke with a loose structure, the coal gas yield is low, the tar yield is high, the high-temperature dry distillation solid product is silver gray coke with a compact structure, the coal gas yield is high, the tar yield is low, and the yield of the medium-temperature dry distillation product is between the low-temperature dry distillation and the high-temperature dry distillation. The main components of the coal gas are hydrogen and methane, and the coal gas can be used as fuel or chemical raw materials. The high-temperature dry distillation is mainly used for producing metallurgical coke, and the obtained tar is a mixture of aromatic hydrocarbon and heterocyclic compounds and is an important source for industrially obtaining the aromatic hydrocarbon; the low-temperature dry distillation coal tar contains more alkanes than the high-temperature dry distillation tar, and is an important source of artificial petroleum.
The existing coal dry distillation generation process is to directly send low-rank coal into a carbonization furnace, heat the low-rank coal to a certain temperature for dry distillation, and because the original low-rank coal contains about 15 percent of water, a large amount of sewage can be generated in the dry distillation process, and the contents of ammonia nitrogen, COD, phenols and other components in the sewage are extremely high and are difficult to treat.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides a low order coal dry distillation apparatus for producing to solve because contain certain moisture in the former low order coal and lead to the problem that current coal dry distillation in-process can produce a large amount of sewage.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: the production device comprises a water treatment device and a coal carbonization device which are connected with each other, wherein the water treatment device is used for pretreating low-rank coal to separate moisture in the low-rank coal, and the coal carbonization device is used for carbonizing the pretreated low-rank coal.
Further, the water treatment device comprises a rotary drying kiln, and a steam heating tube nest is arranged in the rotary drying kiln.
Furthermore, the water treatment device also comprises a dust removal cooling device, the dust removal cooling device is connected with the rotary drying kiln, and the dust removal cooling device is used for removing dust and cooling the moisture separated from the low-rank coal.
Further, the coal dry distillation device comprises a carbonization furnace and a washing and separating device connected with the carbonization furnace, the carbonization furnace is used for heating and decomposing low-rank coal into semi-coke and raw coke gas containing coal tar, and the washing and separating device is used for washing and separating the raw coke gas containing coal tar.
Further, the coal dry distillation device also comprises an exhaust-heat boiler, the exhaust-heat boiler is connected with the carbonization furnace, and the exhaust-heat boiler is used for recovering waste heat of the semi coke.
Further, the coal dry distillation device also comprises a water circulation device connected with the washing and separating device, and the water circulation device is used for circularly washing the raw coke oven gas containing the coal tar.
The embodiment of the utility model provides a have following advantage:
the embodiment of the utility model provides a low order coal dry distillation apparatus for producing, this apparatus for producing include water treatment facilities and coal dry distillation device, separate out the moisture in the former low order coal in advance before carrying out the coal dry distillation, the temperature during moisture separation is lower, and the dry distillation thing in the low order coal can not spill over, and the aquatic impurity composition of separation is less, can regard as clean water reuse, the sewage volume in the coal dry distillation process that significantly reduces, effectively reduces sewage treatment capacity and treatment cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic structural diagram of a low-rank coal dry distillation production device provided by embodiment 1 of the present invention.
In the figure: the system comprises a water treatment device 100, a coal carbonization device 200, a rotary drying kiln 110, a steam heating tube array 120, a dedusting and cooling device 130, a carbonization furnace 210, a washing and separating device 220, a waste heat boiler 230 and a water circulation device 240.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. 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.
Example 1
As shown in fig. 1, the present embodiment proposes a low-rank coal pyrolysis production apparatus including a water treatment apparatus 100 and a coal pyrolysis apparatus 200 connected to each other. The water treatment device 100 is used for pretreating low-rank coal to separate moisture from the low-rank coal, and the coal carbonization device 200 is used for carbonizing the pretreated low-rank coal.
The water treatment apparatus 100 includes a rotary kiln 110, and a steam heating pipe array 120 is provided in the rotary kiln 110. The water treatment device 100 further comprises a dust removal cooling device 130, the dust removal cooling device 130 is connected with the rotary drying kiln 110, and the dust removal cooling device 130 is used for removing dust and cooling moisture separated from the low-rank coal.
The coal dry distillation device 200 comprises a carbonization furnace 210 and a washing and separating device 220 connected with the carbonization furnace 210, wherein under the low-temperature dry distillation condition, the carbonization furnace 210 is used for heating and decomposing low-rank coal into semi-coke (semi-coke) and raw coke gas containing coal tar, and the washing and separating device 220 is used for washing and separating the raw coke gas containing coal tar. The coal dry distillation device 200 further comprises a waste heat boiler 230, the waste heat boiler 230 is connected with the carbonization furnace 210, and the waste heat boiler 230 is used for recovering waste heat of the semi coke. The coal dry distillation device 200 further comprises a water circulation device 240 connected with the washing and separating device 220, and the water circulation device 240 is used for circularly washing the raw coke oven gas containing the coal tar.
The working process of the production device is as follows: sending the low-rank coal into a rotary drying kiln 110, heating the low-rank coal to 120-plus 150 ℃ through a steam heating tube array 120 to separate free water in the low-rank coal, dedusting and cooling the separated water through a dedusting and cooling device 130 to obtain clean water which can be recycled, sending the treated low-rank coal into a carbonization furnace 210 for low-temperature carbonization for 7-8h at the temperature of 500-plus 600 ℃ to obtain semi-coke (semi-coke) serving as a carbonization product, performing waste heat recovery on the semi-coke through a waste heat boiler 230 to generate steam for waste heat utilization, washing and separating the waste heat gas containing the coal tar into coal gas and coal tar through a washing and separating device 220, recycling the ammonia-containing wastewater generated by washing for multiple times through a water circulating device 240, and discharging the ammonia-containing wastewater for no recycling when the impurity content in the ammonia-containing wastewater reaches a certain concentration.
The embodiment of the utility model provides a low order coal dry distillation apparatus for producing, the moisture in the former low order coal is isolated in advance before carrying out the coal dry distillation, the temperature during moisture separation is lower, the dry distillation thing in the low order coal can not spill over, the aquatic impurity composition of separation is less, can regard as clean water reuse, the sewage volume of the coal dry distillation in-process that significantly reduces, compare in the dry distillation that does not carry out the preliminary treatment, dry distillation can make the sewage of coal dry distillation process reduce more than half after the dewatering in advance, effectively reduce sewage treatment capacity and treatment cost.
Example 2
Corresponding to the embodiment 1, the embodiment of the utility model provides a low order coal dry distillation production method, this method includes following step:
pretreating the low-rank coal to separate water from the low-rank coal;
and carrying out dry distillation on the pretreated low-rank coal.
Further, the low-rank coal is pretreated to separate moisture in the low-rank coal, and the method comprises the following steps: heating to 120-150 ℃ to separate the water in the low-rank coal.
Further, performing dry distillation on the pretreated low-rank coal, wherein the dry distillation comprises the following steps: the low-temperature dry distillation is carried out at the dry distillation temperature of about 500 ℃ and 600 ℃, and the dry distillation time is 7-8 h.
The specific contents of each step in the low-rank coal carbonization production method provided by the embodiment of the utility model are described in detail in the above embodiment 1, and therefore, the description is not repeated herein.
The embodiment of the utility model provides a low order coal dry distillation production method, the moisture in the former low order coal is isolated in advance before carrying out the coal dry distillation, the temperature during moisture separation is lower, the dry distillation thing in the low order coal can not spill over, the aquatic impurity composition of separation is less, can regard as clean water reuse, the sewage volume in the coal dry distillation process that significantly reduces, compare in the dry distillation that does not carry out the preliminary treatment, dry distillation can make the sewage of coal dry distillation process reduce more than half after the dewatering in advance, effectively reduce sewage treatment capacity and treatment cost.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (2)
1. The low-rank coal dry distillation production device is characterized by comprising a water treatment device and a coal dry distillation device which are connected with each other, wherein the water treatment device is used for heating low-rank coal to 120-plus 150 ℃ to separate moisture in the low-rank coal, the coal dry distillation device is used for performing dry distillation on the low-rank coal after pretreatment, the water treatment device comprises a rotary drying kiln, a steam heating tube array is arranged in the rotary drying kiln, the water treatment device further comprises a dust removal cooling device, the dust removal cooling device is connected with the rotary drying kiln, the dust removal cooling device is used for removing dust and cooling the moisture separated from the low-rank coal to obtain reusable clean water, the coal dry distillation device comprises a carbonization furnace and a washing and separating device connected with the carbonization furnace, the carbonization furnace is used for heating and decomposing the low-rank coal into semi-coke and raw gas containing coal tar, the coal dry distillation device also comprises a water circulation device connected with the washing and separating device, and the water circulation device is used for circularly washing the raw gas containing the coal tar.
2. The low-rank coal carbonization production device according to claim 1, wherein the coal carbonization device further comprises a waste heat boiler, the waste heat boiler is connected with the carbonization furnace, and the waste heat boiler is used for recovering waste heat of the semi coke.
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| CN201921493834.5U CN211339387U (en) | 2019-09-09 | 2019-09-09 | Low order coal dry distillation apparatus for producing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110423628A (en) * | 2019-09-09 | 2019-11-08 | 重庆润科新材料技术有限公司 | A kind of low order dry distillation of coal process units and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110423628A (en) * | 2019-09-09 | 2019-11-08 | 重庆润科新材料技术有限公司 | A kind of low order dry distillation of coal process units and method |
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Effective date of registration: 20221020 Address after: 719302 North Section of Beiwei 9th Road, Qingshui Industrial Park, Yushen Industrial Zone, Shenmu County, Yulin City, Shaanxi Province Patentee after: YULIN CITY YUSHEN INDUSTRIAL ZONE HUAHANG ENERGY Co.,Ltd. Address before: 400039 No. 15-5, No. 44-7, Shiyang Road, Jiulongpo District, Chongqing Patentee before: CHONGQING RUNKE NEW MATERIAL TECHNOLOGY Co.,Ltd. |