High-Temperature Ceramic Filter for Pyrolysis Gas Dust Removal
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Solution Overview
Problem
Current dust removal processes in coal gasification are inefficient at high temperatures, leading to equipment blockage and reduced service life due to tar agglomeration and dust particle re-separation, and pose risks of combustion and explosion.
Innovation Solution
The high-temperature high-efficiency explosion-proof integrated modular dust removal equipment employs a high-temperature ceramic filter system and high-pressure backblow system, along with a preliminary dust removal system, to filter and clean dust from raw coal gas without cooling, ensuring effective filtration and extended equipment life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the raw coal gas is cooled below 200°C before dust removal, then the dust removal process can be performed, but the tar will agglomerate with dust particles and adhere to the equipment inner wall, causing blockage and reducing service life
Solution Approach 1:
The patent changes the temperature parameter from conventional cooling below 200°C to high-temperature operation (above 200°C), preventing tar agglomeration while maintaining effective dust removal. The high-temperature ceramic filter system enables this parameter change without compromising filtration effectiveness.
Solution Approach 2:
The patent employs high-temperature ceramic filter materials that can withstand high temperatures and maintain filtration effectiveness. This composite material approach allows the system to operate at high temperatures without the tar agglomeration problems that occur with conventional cooling methods.
2Reliability
If the raw coal gas is cooled before dust removal, then dust removal can be performed, but fine dust particles may re-separate and cause equipment blockage
Solution Approach 1:
The patent changes the temperature parameter to maintain high-temperature operation during dust removal, preventing the cooling-induced re-separation of fine dust particles. This parameter change ensures that dust particles remain stabilized in the gas stream throughout the filtration process.
3Reliability
If a bag-type dust remover is used after cooling, then dust removal can be achieved, but the system becomes complex and requires multiple equipment components
Solution Approach 1:
The patent merges the dust removal function with the high-temperature filtration system, eliminating the need for separate cooling and bag-type dust removal equipment. The integrated design combines multiple functions into a single system, reducing overall complexity while maintaining effectiveness.
4Productivity
If the dust removal equipment is exposed to high temperature, then direct filtration is possible, but the equipment may suffer thermal damage
Solution Approach 1:
The patent employs high-temperature ceramic filter materials and thermal insulation layers to protect the equipment from thermal damage while enabling direct high-temperature filtration. These material solutions allow the system to operate at high temperatures without compromising equipment strength or integrity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables direct filtration of high-temperature dust-containing raw coal gas, prevents pipe blockage and re-separation of fine dust, and reduces the risks of combustion and explosion, while maintaining strong acid and alkali resistance and extending equipment service life to 6-8 years.
Implementation Method 1
a high-temperature ceramic filter system, the high-temperature ceramic filter system being used for dividing the chamber of the housing into a dust collection chamber and a gas purification chamber
Implementation Method 2
a high-pressure backblow system, the high-pressure backblow system being mounted in the gas purification chamber, and being used for performing backblow operation towards the dust collection chamber
Implementation Method 3
a preliminary dust removal system, the preliminary dust removal system being positioned outside the housing, and being communicated with the dust collection chamber
Data Source
AI summary
A high-temperature high-efficiency explosion-proof integrated modular dust removal equipment for pyrolysis raw coal gas, including: a housing internally provided with a chamber, the chamber being enabled a medium to flow from a gas inlet to a gas outlet of the housing; a high-temperature ceramic filter system for dividing the chamber into a dust collection chamber and a gas purification chamber that are individual, and being located in the dust collection chamber to communicate the dust collection chamber and the gas purification chamber; a high-pressure backblow system located in the gas purification chamber and used for performing blowback operation towards the dust collection chamber; and a preliminary dust removal system positioned outside the housing and communicated with the dust collection chamber.