CN111662736A - Production process for preparing asphalt by utilizing coal cinder refined distillation - Google Patents
Production process for preparing asphalt by utilizing coal cinder refined distillation Download PDFInfo
- Publication number
- CN111662736A CN111662736A CN202010497712.4A CN202010497712A CN111662736A CN 111662736 A CN111662736 A CN 111662736A CN 202010497712 A CN202010497712 A CN 202010497712A CN 111662736 A CN111662736 A CN 111662736A
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- Prior art keywords
- treatment
- asphalt
- distillation
- coal cinder
- production process
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/002—Working-up pitch, asphalt, bitumen by thermal means
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/02—Working-up pitch, asphalt, bitumen by chemical means reaction
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/06—Working-up pitch, asphalt, bitumen by distillation
Abstract
The invention provides a production process for preparing asphalt by utilizing coal cinder refined distillation, and relates to the technical field of asphalt preparation. The production process for preparing the asphalt by utilizing the coal cinder fine distillation comprises the following steps: s1, pretreating raw materials; s2, lifting and preheating raw materials; s3, stirring by a stirring tank; s4, filtering; s5, cracking treatment; s6, heating by using a tube furnace; s7, distilling by a distillation tower. According to the invention, through the matching of raw material pretreatment, raw material lifting and preheating, stirring treatment of a stirring tank, filtering treatment, cracking treatment, heating treatment of a tubular furnace, distillation treatment of a distillation tower and the like, the method for preparing the asphalt by finely distilling the coal cinder is perfected, the production process is reasonable in design, the resource utilization rate is improved, the yield of the prepared asphalt is higher, and the waste of resources is further reduced to a certain extent.
Description
Technical Field
The invention relates to the technical field of asphalt preparation, in particular to a production process for preparing asphalt by utilizing coal cinder refined distillation.
Background
The asphalt is a black-brown complex mixture composed of hydrocarbons with different molecular weights and nonmetal derivatives thereof, is one of high-viscosity organic liquids, is in a liquid state, has a black surface, and is soluble in carbon disulfide. Asphalt is a waterproof, moistureproof and anticorrosive organic cementing material. The asphalt can be mainly divided into coal tar asphalt, petroleum asphalt and natural asphalt, wherein the coal tar asphalt is a byproduct of coking. Petroleum pitch is the residue of crude oil distillation. Natural bitumen is stored underground, and some forms a mineral layer or is accumulated on the surface of the crust. The asphalt is mainly used in the industries of paint, plastics, rubber and the like and pavement and the like.
The coal cinder is one of industrial solid wastes, waste residues discharged by coal burning of thermal power plants, industrial and civil boilers and other equipment are also called furnace cinder, main components are silicon dioxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide and the like, and the coal cinder can be used for manufacturing cement, bricks, refractory materials and the like according to different components.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects in the prior art, the invention provides a production process for preparing asphalt by utilizing coal cinder fine distillation, which solves the defects and shortcomings in the prior art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a production process for preparing asphalt by utilizing coal cinder fine distillation comprises the following steps:
s1, pretreating raw materials;
s2, lifting and preheating raw materials;
s3, stirring by a stirring tank;
s4, filtering;
s5, cracking treatment;
s6, heating by using a tube furnace;
s7, distilling by a distillation tower.
Preferably, the pretreatment of the raw materials in the step 1 is specifically as follows: sending the coal cinder into an underground buffer tank of a filter pressing workshop, then carrying out solid-liquid separation on the coal cinder through the action of a plate-and-frame filter press, independently collecting solid residue and liquid, sending the liquid into a storage tank for storage, crushing the obtained solid residue, and enabling the granularity after crushing to be 200-mesh and 300-mesh.
Preferably, the raw material lifting and preheating in step 2 are as follows: utilize the conveyer belt to transmit the solid residue and the promotion of material, the conveyer belt comprises horizontal segment and slope section, and the horizontal segment is used for guaranteeing initial solid residue stability, and the slope section is used for promoting the solid residue, and the solid residue utilizes preheating device to preheat it in transmission process, and the temperature control of preheating is 60-80 ℃.
Preferably, the stirring treatment of the stirring tank in the step 3 is specifically as follows: and (3) sending the preheated solid residue into a stirring tank for stirring and dehydrating, controlling the temperature in the stirring tank to be 160-200 ℃, heating for 2-3h, discharging oil gas generated in the heating process, and then, condensing and then, sending the oil gas into an oil-water separator to separate water and light oil.
Preferably, the filtering treatment in the step 4 is specifically as follows: and taking out the residue in the stirring tank, and filtering the residue by using a filter to separate a solid-liquid part to obtain solid ash.
Preferably, the cracking treatment in the step 5 is specifically as follows: and feeding the separated solid ash into a cracking furnace for cracking treatment, wherein the temperature in the cracking furnace is 500-1000 ℃.
Preferably, the tubular furnace heating treatment in the step 6 is specifically as follows: and (3) feeding the solid ash after the cracking treatment into a tubular furnace for heating, controlling the temperature in the tubular furnace to be 360-400 ℃ by using a low-nitrogen burner, condensing the gas generated in the tubular furnace, and then feeding the gas into an oil-water separator to separate water and light oil.
Preferably, the distillation treatment of the distillation column in the step 7 is as follows: and (2) feeding the solid residue in the tubular furnace into a distillation tower for distillation treatment, separating light and heavy components after the distillation treatment to obtain heavy components, namely asphalt, condensing the obtained light components, feeding the condensed light components into a filter, and separating the residue and light oil.
(III) advantageous effects
The invention provides a production process for preparing asphalt by utilizing coal cinder refined distillation. The method has the following beneficial effects:
1. according to the invention, through the matching of raw material pretreatment, raw material lifting and preheating, stirring treatment of a stirring tank, filtering treatment, cracking treatment, heating treatment of a tubular furnace, distillation treatment of a distillation tower and the like, the method for preparing the asphalt by finely distilling the coal cinder is perfected, the production process is reasonable in design, the resource utilization rate is improved, the yield of the prepared asphalt is higher, and the waste of resources is further reduced to a certain extent.
2. According to the invention, the moisture content of the coal cinder raw material is greatly reduced by carrying out pretreatment, preheating, stirring treatment and the like on the coal cinder raw material, so that the subsequent treatment of the coal cinder raw material is more convenient, the obtained light and heavy components have lower moisture content, and the quality of the light and heavy components is improved.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1, an embodiment of the present invention provides a production process for preparing asphalt by utilizing coal cinder fine distillation, where the production process includes the following steps:
s1, raw material pretreatment: sending the coal cinder into an underground buffer tank of a filter pressing workshop, then carrying out solid-liquid separation on the coal cinder through the action of a plate-and-frame filter press, separately collecting solid residue and liquid, sending the liquid into a storage tank for storage, and carrying out crushing treatment on the obtained solid residue, wherein the particle size after crushing is 200-mesh and 300-mesh, and preferably 250-mesh;
s2, lifting and preheating raw materials: the conveying belt is used for conveying solid residues and lifting materials, the conveying belt is composed of a horizontal section and an inclined section, the horizontal section is used for guaranteeing the stability of the initial solid residues, the inclined section is used for lifting the solid residues, the solid residues are preheated by a preheating device in the conveying process, the preheating temperature is controlled to be 60-80 ℃, and the preheating temperature is preferably 70 ℃;
s3, stirring treatment in a stirring tank: sending the preheated solid residue into a stirring tank for stirring dehydration treatment, controlling the temperature in the stirring tank at 160-200 ℃, preferably 180 ℃, heating for 2-3h, discharging oil gas generated in the heating process, then condensing the oil gas and entering an oil-water separator, and separating water and light oil;
according to the invention, the moisture content of the coal cinder raw material is greatly reduced by carrying out pretreatment, preheating, stirring treatment and the like on the coal cinder raw material, so that the subsequent treatment of the coal cinder raw material is more convenient, the obtained light and heavy components have lower moisture content, and the quality of the light and heavy components is improved;
s4, filtering: taking out the residue of the stirring tank, filtering the residue by using a filter, and separating a solid-liquid part to obtain solid ash which can be used as a raw material in the next process;
s5, cracking treatment: sending the separated solid ash into a cracking furnace for cracking treatment, wherein the temperature in the cracking furnace is 500-1000 ℃;
s6, heating treatment in a tube furnace: feeding the solid ash after cracking treatment into a tubular furnace for heating, controlling the temperature in the tubular furnace to be 360-400 ℃ by using a low-nitrogen burner, wherein in the actual processing process, the temperature in the tubular furnace should be slowly increased, the temperature cannot be directly increased to the maximum within a short time, and a temperature gradient can be set according to the situation, for example, the temperature is slowly increased at 5-10 ℃/min, so that the safety in the tubular furnace is ensured, and the gas generated in the tubular furnace enters an oil-water separator after being condensed to separate water and light oil;
s7, distillation treatment of a distillation column: and (2) feeding the solid residue in the tubular furnace into a distillation tower for distillation treatment, separating light and heavy components after the distillation treatment to obtain heavy components, namely asphalt, condensing the obtained light components, feeding the condensed light components into a filter, and separating the residue and light oil.
According to the invention, through the matching among the raw material pretreatment, the raw material lifting and preheating, the stirring treatment of the stirring tank, the filtering treatment, the cracking treatment, the heating treatment of the tubular furnace, the distillation treatment of the distillation tower and the like, the method for preparing the asphalt by finely distilling the coal cinder is perfected, the production process is reasonable in design, the resource utilization rate is improved, the yield of the prepared asphalt is higher, and the resource waste is further reduced to a certain extent.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A production process for preparing asphalt by utilizing coal cinder fine distillation is characterized by comprising the following steps: the production process comprises the following steps:
s1, pretreating raw materials;
s2, lifting and preheating raw materials;
s3, stirring by a stirring tank;
s4, filtering;
s5, cracking treatment;
s6, heating by using a tube furnace;
s7, distilling by a distillation tower.
2. The production process for preparing the asphalt by utilizing the fine distillation of the coal cinder as claimed in claim 1, is characterized in that: the raw material pretreatment in the step 1 is specifically as follows: sending the coal cinder into an underground buffer tank of a filter pressing workshop, then carrying out solid-liquid separation on the coal cinder through the action of a plate-and-frame filter press, independently collecting solid residue and liquid, sending the liquid into a storage tank for storage, crushing the obtained solid residue, and enabling the granularity after crushing to be 200-mesh and 300-mesh.
3. The production process for preparing the asphalt by utilizing the fine distillation of the coal cinder as claimed in claim 1, is characterized in that: the raw material lifting and preheating in the step 2 are specifically as follows: utilize the conveyer belt to transmit the solid residue and the promotion of material, the conveyer belt comprises horizontal segment and slope section, and the horizontal segment is used for guaranteeing initial solid residue stability, and the slope section is used for promoting the solid residue, and the solid residue utilizes preheating device to preheat it in transmission process, and the temperature control of preheating is 60-80 ℃.
4. The production process for preparing the asphalt by utilizing the fine distillation of the coal cinder as claimed in claim 1, is characterized in that: the stirring treatment of the stirring tank in the step 3 is specifically as follows: and (3) sending the preheated solid residue into a stirring tank for stirring and dehydrating, controlling the temperature in the stirring tank to be 160-200 ℃, heating for 2-3h, discharging oil gas generated in the heating process, and then, condensing and then, sending the oil gas into an oil-water separator to separate water and light oil.
5. The production process for preparing the asphalt by utilizing the fine distillation of the coal cinder as claimed in claim 1, is characterized in that: the filtration treatment in the step 4 is specifically as follows: and taking out the residue in the stirring tank, and filtering the residue by using a filter to separate a solid-liquid part to obtain solid ash.
6. The production process for preparing the asphalt by utilizing the fine distillation of the coal cinder as claimed in claim 1, is characterized in that: the cracking treatment in the step 5 is specifically as follows: and feeding the separated solid ash into a cracking furnace for cracking treatment, wherein the temperature in the cracking furnace is 500-1000 ℃.
7. The production process for preparing the asphalt by utilizing the fine distillation of the coal cinder as claimed in claim 1, is characterized in that: the tubular furnace heating treatment in the step 6 is specifically as follows: and (3) feeding the solid ash after the cracking treatment into a tubular furnace for heating, controlling the temperature in the tubular furnace to be 360-400 ℃ by using a low-nitrogen burner, condensing the gas generated in the tubular furnace, and then feeding the gas into an oil-water separator to separate water and light oil.
8. The production process for preparing the asphalt by utilizing the fine distillation of the coal cinder as claimed in claim 1, is characterized in that: the distillation treatment of the distillation column in the step 7 is specifically as follows: and (2) feeding the solid residue in the tubular furnace into a distillation tower for distillation treatment, separating light and heavy components after the distillation treatment to obtain heavy components, namely asphalt, condensing the obtained light components, feeding the condensed light components into a filter, and separating the residue and light oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010497712.4A CN111662736A (en) | 2020-06-04 | 2020-06-04 | Production process for preparing asphalt by utilizing coal cinder refined distillation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010497712.4A CN111662736A (en) | 2020-06-04 | 2020-06-04 | Production process for preparing asphalt by utilizing coal cinder refined distillation |
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| CN111662736A true CN111662736A (en) | 2020-09-15 |
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Citations (6)
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|---|---|---|---|---|
| CA2915849A1 (en) * | 2014-12-19 | 2016-06-19 | Upm-Kymmene Corporation | Process for producing hydrocarbons |
| WO2017058972A1 (en) * | 2015-09-30 | 2017-04-06 | Uop Llc | Process for using iron and particulate carbon catalyst for slurry hydrocracking |
| CN107445497A (en) * | 2017-07-21 | 2017-12-08 | 金圆水泥股份有限公司 | It is a kind of using cement kiln synergic processing rectification residue, tar, useless pitch method |
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| CN109456785A (en) * | 2018-08-29 | 2019-03-12 | 山西洪旭环保科技有限公司 | It is a kind of industry dangerous waste HW11 class and HW08 class danger wastes method of disposal |
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2020
- 2020-06-04 CN CN202010497712.4A patent/CN111662736A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2915849A1 (en) * | 2014-12-19 | 2016-06-19 | Upm-Kymmene Corporation | Process for producing hydrocarbons |
| WO2017058972A1 (en) * | 2015-09-30 | 2017-04-06 | Uop Llc | Process for using iron and particulate carbon catalyst for slurry hydrocracking |
| CN107445497A (en) * | 2017-07-21 | 2017-12-08 | 金圆水泥股份有限公司 | It is a kind of using cement kiln synergic processing rectification residue, tar, useless pitch method |
| CN107903942A (en) * | 2017-12-27 | 2018-04-13 | 洛阳昊海工贸有限公司 | A kind of disposing technique of liquid state rectification residue |
| CN109456785A (en) * | 2018-08-29 | 2019-03-12 | 山西洪旭环保科技有限公司 | It is a kind of industry dangerous waste HW11 class and HW08 class danger wastes method of disposal |
| CN109731887A (en) * | 2019-01-28 | 2019-05-10 | 宁夏然尔特工业产业研究院（有限公司） | A kind of bottoms class treatment of wastes produced method and products thereof |
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Application publication date: 20200915 |