CN112679996A - Carbon black production method capable of recycling resources - Google Patents
Carbon black production method capable of recycling resources Download PDFInfo
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- CN112679996A CN112679996A CN202110054004.8A CN202110054004A CN112679996A CN 112679996 A CN112679996 A CN 112679996A CN 202110054004 A CN202110054004 A CN 202110054004A CN 112679996 A CN112679996 A CN 112679996A
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Abstract
The invention provides a carbon black production method capable of recycling resources, and relates to the technical field of carbon black production and processing. The carbon black production method with the resource recycled comprises the following specific steps: s1, collecting high-temperature waste gas generated after coal in a boiler of a thermal power plant is combusted by using a special transmission pipeline; s2, dividing the transmission pipeline in the S1 into a plurality of sections, and installing a coal dust filtering device at an air outlet of the first section of transmission pipeline for primary filtering of fly ash and coal dust of high-temperature waste gas in the first section of transmission pipeline; and S3, after the high-temperature waste gas in the first section of transmission pipeline is subjected to primary filtration and enters the second section of transmission pipeline, installing a carbon black collecting device at the air outlet of the second section of transmission pipeline. Through carrying out multiple filtration to the waste gas that produces behind the boiler burning of thermal power factory, both can prepare a large amount of carbon black resources, also can carry out waste heat utilization to high temperature waste gas, also can carry out recycle to the relevant resource in the waste gas simultaneously, be worth wideling popularize.
Description
Technical Field
The invention relates to the technical field of carbon black production and processing, in particular to a carbon black production method capable of recycling resources.
Background
Carbon black, also known as carbon black, is an amorphous carbon; the light, loose and extremely fine black powder has a very large surface area ranging from 10 to 3000m2/g, and is a product obtained by incomplete combustion or thermal decomposition of carbonaceous substances (coal, natural gas, heavy oil, fuel oil, etc.) under the condition of insufficient air. The specific gravity is 1.8-2.1; gas black, which is made of natural gas, lamp black, which is made of oil, and acetylene black, which is made of acetylene; in addition, "channel black" and "furnace black" are also included; according to the properties of carbon black, there are "reinforcing carbon black", "conductive carbon black", "wear-resistant carbon black", etc. Can be used as black dye for manufacturing Chinese ink, printing ink, paint and the like, and also can be used as reinforcing agent of rubber. The structural properties of carbon black are expressed by the degree of chain or grape-like aggregation among carbon black particles; carbon black consisting of agglomerates composed of the size, form and number of particles per agglomerate is called high structure carbon black. At present, the structural property is expressed by the commonly used oil absorption value, the larger the oil absorption value is, the higher the structural property of the carbon black is, a space network channel is easy to form, and the carbon black is not easy to damage. The high-structure carbon black has fine particles, the network chains are tightly stacked, the specific surface area is large, the number of particles per unit mass is large, and the chain type conductive structure is favorably formed in a polymer, wherein acetylene carbon black is the best among various carbon black varieties.
The traditional carbon black production and processing usually adopts a mode of insufficient combustion of raw materials to carry out deposition production of carbon black, and the production mode of simply manufacturing the carbon black by utilizing the combustion of the raw materials not only easily causes a large amount of resource waste, but also cannot realize the recycling of resources, so that more defects exist in the actual production process, and therefore, a new carbon black production method with the recycling of resources is developed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a carbon black production method capable of recycling resources, which solves the problems that a production mode of simply burning raw materials to produce carbon black is easy to cause a large amount of resource waste and cannot realize recycling of resources.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a carbon black production method with resource recycling comprises the following specific steps:
s1, collecting high-temperature waste gas generated after coal in a boiler of a thermal power plant is combusted by using a special transmission pipeline;
s2, dividing the transmission pipeline in the S1 into a plurality of sections, and installing a coal dust filtering device at an air outlet of the first section of transmission pipeline for primary filtering of fly ash and coal dust of high-temperature waste gas in the first section of transmission pipeline;
s3, after high-temperature waste gas in the first section of transmission pipeline enters a second section of transmission pipeline after being primarily filtered, installing a carbon black collecting device at the air outlet of the second section of transmission pipeline, wherein the carbon black collecting device is composed of a plurality of metal baffles which are distributed in a crossed manner, and when the high-temperature waste gas passes through the carbon black collecting device composed of the plurality of metal baffles which are distributed in the crossed manner, carbon black in the waste gas can be automatically deposited on the outer surfaces of the metal baffles which are distributed in the crossed manner;
s4, the high-temperature waste gas enters a third section of transmission pipeline connected with the air outlet of the second section of transmission pipeline after passing through a carbon black collecting device consisting of a plurality of metal baffles which are distributed in a crossed manner, and a micro-particle filtering device is arranged at the air outlet of the third section of transmission pipeline and is used for filtering and collecting fine particles in the high-temperature waste gas;
s5, filtering the high-temperature waste gas by using a micro-particle filtering device, and then enabling the high-temperature waste gas to enter a fourth section of transmission pipeline connected with the air outlet of the third section of transmission pipeline, wherein the middle section of the fourth section of transmission pipeline is connected with a combustion chamber, and carbon dioxide generated after the combustible gas in the high-temperature waste gas is combusted is continuously transmitted along with the waste gas;
s6, leading the high-temperature waste gas into a tubular heat exchanger after passing through a fourth section of transmission pipeline to finish heat exchange;
and S7, introducing the waste gas subjected to heat exchange into a drying box, drying the waste gas, and then sequentially carrying out sulfur dioxide treatment and carbon dioxide collection treatment on the dried waste gas.
Preferably, the pipeline for conveying the high-temperature exhaust gas in S1 is a pipeline with a smooth inner wall and an inner diameter greater than 80 cm.
Preferably, in S2, the coal dust filtering device installed at the air outlet of the first section of the transmission pipeline needs to adopt a detachable installation structure.
Preferably, in S3, the plurality of metal baffles on the carbon black collecting device are all in a sealed installation structure, and each metal baffle can be rapidly drawn out from the carbon black collecting device, and can be sealed by auxiliary equipment.
Preferably, an ignition mechanism is installed in S5 to ignite the carbon monoxide gas in the high-temperature exhaust gas.
Preferably, in S6, a tube heat exchanger, a disc heat exchanger or other types of heat exchange devices may be used.
Preferably, in S7, in addition to the sulfur dioxide treatment and the carbon dioxide collection treatment, the dried waste gas needs to be treated with a small amount of fluoride and chloride in the waste gas.
(III) advantageous effects
The invention provides a carbon black production method capable of recycling resources. The method has the following beneficial effects:
1. according to the carbon black production method with the resource recycling function, the carbon black is prepared in a resource recycling mode, so that the resource recycling is realized, the traditional production mode of directly burning raw materials to prepare the carbon black is changed, a large amount of resource waste is reduced, and the carbon black production method is more energy-saving and environment-friendly.
2. According to the carbon black production method with the resource recycling function, waste gas generated after combustion of the boiler of the thermal power plant is subjected to multiple filtering treatments, a large amount of carbon black resources can be prepared, waste heat of high-temperature waste gas can be utilized, and meanwhile related resources in the waste gas can be recycled, so that the carbon black production method is worthy of great popularization.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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): the embodiment of the invention provides a carbon black production method capable of recycling resources, which comprises the following specific steps:
s1, collecting high-temperature waste gas generated after coal in a boiler of a thermal power plant is combusted by using a special transmission pipeline;
s2, dividing the transmission pipeline in the S1 into a plurality of sections, and installing a coal dust filtering device at an air outlet of the first section of transmission pipeline for primary filtering of fly ash and coal dust of high-temperature waste gas in the first section of transmission pipeline;
s3, after high-temperature waste gas in the first section of transmission pipeline enters a second section of transmission pipeline after being primarily filtered, installing a carbon black collecting device at the air outlet of the second section of transmission pipeline, wherein the carbon black collecting device is composed of a plurality of metal baffles which are distributed in a crossed manner, and when the high-temperature waste gas passes through the carbon black collecting device composed of the plurality of metal baffles which are distributed in the crossed manner, carbon black in the waste gas can be automatically deposited on the outer surfaces of the metal baffles which are distributed in the crossed manner;
s4, the high-temperature waste gas enters a third section of transmission pipeline connected with the air outlet of the second section of transmission pipeline after passing through a carbon black collecting device consisting of a plurality of metal baffles which are distributed in a crossed manner, and a micro-particle filtering device is arranged at the air outlet of the third section of transmission pipeline and is used for filtering and collecting fine particles in the high-temperature waste gas;
s5, filtering the high-temperature waste gas by using a micro-particle filtering device, and then enabling the high-temperature waste gas to enter a fourth section of transmission pipeline connected with the air outlet of the third section of transmission pipeline, wherein the middle section of the fourth section of transmission pipeline is connected with a combustion chamber, and carbon dioxide generated after the combustible gas in the high-temperature waste gas is combusted is continuously transmitted along with the waste gas;
s6, leading the high-temperature waste gas into a tubular heat exchanger after passing through a fourth section of transmission pipeline to finish heat exchange;
and S7, introducing the waste gas subjected to heat exchange into a drying box, drying the waste gas, and then sequentially carrying out sulfur dioxide treatment and carbon dioxide collection treatment on the dried waste gas.
The pipeline for transmitting the high-temperature waste gas in the S1 needs to be a pipeline with a smooth inner wall and an inner diameter larger than 80cm, and a metal pipeline with a smooth inner wall and an inner diameter larger than 80cm is adopted, so that the gas transmission is facilitated, and meanwhile, the subsequent overhaul and the cleaning of the inner wall of the pipeline are facilitated.
The coal dust filtering device arranged at the air outlet of the first section of the transmission pipeline in the S2 needs to adopt a detachable installation structure, and by adopting the detachable installation structure, the coal dust filtering device is convenient to detach and install quickly and can facilitate subsequent cleaning of the device.
The sealing type installation structure is adopted for the plurality of metal baffles on the carbon black collecting device in the S3, meanwhile, each metal baffle can be rapidly pulled out of the carbon black collecting device, auxiliary equipment can be utilized to seal the carbon black collecting device, each metal baffle can be rapidly pulled out of the carbon black collecting device through the metal baffle, the auxiliary equipment can be utilized to seal the carbon black collecting device, the prepared carbon black resources are conveniently collected in a unified mode, meanwhile, the carbon black collecting device can also be subjected to sealing treatment, and a large amount of heat loss is prevented.
S5 has an ignition mechanism installed to ignite the carbon monoxide gas in the high-temperature exhaust gas, so that the carbon monoxide gas in the high-temperature exhaust gas is ignited to generate heat during combustion, thereby preventing the carbon monoxide from causing danger during subsequent processing and preventing the carbon monoxide from polluting the environment after being discharged.
And S6, a tubular heat exchanger, a disc heat exchanger or other types of heat exchange equipment can be adopted, and the tubular heat exchanger, the disc heat exchanger or other types of heat exchange equipment can be adopted for normal exchange, so that efficient waste heat utilization is realized, and high-temperature waste gas can be rapidly cooled, so that subsequent treatment is facilitated.
In S7, in addition to the sulfur dioxide treatment and the carbon dioxide collection treatment of the dried exhaust gas in sequence, a small amount of fluoride and chloride in the exhaust gas are also required to be treated, and by performing the sulfur dioxide treatment, the carbon dioxide collection treatment and the small amount of fluoride and chloride treatment of the dried exhaust gas, the pollution to the local air can be reduced when the exhaust gas is finally discharged.
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 (7)
1. A carbon black production method with resource recycling is characterized in that: the method comprises the following specific steps:
s1, collecting high-temperature waste gas generated after coal in a boiler of a thermal power plant is combusted by using a special transmission pipeline;
s2, dividing the transmission pipeline in the S1 into a plurality of sections, and installing a coal dust filtering device at an air outlet of the first section of transmission pipeline for primary filtering of fly ash and coal dust of high-temperature waste gas in the first section of transmission pipeline;
s3, after high-temperature waste gas in the first section of transmission pipeline enters a second section of transmission pipeline after being primarily filtered, installing a carbon black collecting device at the air outlet of the second section of transmission pipeline, wherein the carbon black collecting device is composed of a plurality of metal baffles which are distributed in a crossed manner, and when the high-temperature waste gas passes through the carbon black collecting device composed of the plurality of metal baffles which are distributed in the crossed manner, carbon black in the waste gas can be automatically deposited on the outer surfaces of the metal baffles which are distributed in the crossed manner;
s4, the high-temperature waste gas enters a third section of transmission pipeline connected with the air outlet of the second section of transmission pipeline after passing through a carbon black collecting device consisting of a plurality of metal baffles which are distributed in a crossed manner, and a micro-particle filtering device is arranged at the air outlet of the third section of transmission pipeline and is used for filtering and collecting fine particles in the high-temperature waste gas;
s5, filtering the high-temperature waste gas by using a micro-particle filtering device, and then enabling the high-temperature waste gas to enter a fourth section of transmission pipeline connected with the air outlet of the third section of transmission pipeline, wherein the middle section of the fourth section of transmission pipeline is connected with a combustion chamber, and carbon dioxide generated after the combustible gas in the high-temperature waste gas is combusted is continuously transmitted along with the waste gas;
s6, leading the high-temperature waste gas into a tubular heat exchanger after passing through a fourth section of transmission pipeline to finish heat exchange;
and S7, introducing the waste gas subjected to heat exchange into a drying box, drying the waste gas, and then sequentially carrying out sulfur dioxide treatment and carbon dioxide collection treatment on the dried waste gas.
2. The method for producing carbon black by resource recycling according to claim 1, wherein: the pipeline for transmitting the high-temperature waste gas in the S1 needs to be a pipeline with a smooth inner wall and an inner diameter larger than 80 cm.
3. The method for producing carbon black by resource recycling according to claim 1, wherein: in the S2, the coal dust filtering device installed at the air outlet of the first section of the transmission pipeline needs to adopt a detachable installation structure.
4. The method for producing carbon black by resource recycling according to claim 1, wherein: and in the S3, the plurality of metal baffles on the carbon black collecting device are of sealed mounting structures, and meanwhile, each metal baffle can be rapidly drawn out of the carbon black collecting device and can be sealed by using auxiliary equipment.
5. The method for producing carbon black by resource recycling according to claim 1, wherein: in S5, an ignition mechanism is installed to ignite the carbon monoxide gas in the high-temperature exhaust gas.
6. The method for producing carbon black by resource recycling according to claim 1, wherein: in S6, a tube heat exchanger, a disc heat exchanger or other types of heat exchange devices may be used.
7. The method for producing carbon black by resource recycling according to claim 1, wherein: in S7, the dried exhaust gas needs to be sequentially subjected to sulfur dioxide treatment and carbon dioxide collection treatment, and a small amount of fluoride and chloride in the exhaust gas needs to be treated accordingly.
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| CN202110054004.8A CN112679996A (en) | 2021-01-15 | 2021-01-15 | Carbon black production method capable of recycling resources |
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