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ST9100CN type of Coke-Oven Coal Gas Analysis System
Coke-oven coal gas is an important by-product in the coke production process, it can be used as recycled energy in power plants and can be used as household coal gas as well, it is also able to be reused as raw material gas for synthetic natural gas/LNG.
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Coal chemical industry
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Product Overview
Coke-oven coal gas is an important by-product in the coke production process, it can be used as recycled energy in power plants and can be used as household coal gas as well, moreover it is also able to be reused as raw material gas for synthetic natural gas/LNG. The coke-oven coal gas recycling process needs to go through: Raw coke-oven coal gas → primary cooler → electrostatic tar collector → blower → pre-cooling tower → desulfurization tower → spray-style saturator → final cooling tower → benzene-washing tower → purified coal gas and other purification processes. Among them, the tar removal process by the electrostatic tar collector is a particularly important segment. The process of electrostatic tar removal requires that the oxygen content of the coal gas must be controlled within 1.0%; generally, if it exceeds 2%, then the high-voltage power supply of the electrostatic tar collector will chainedly be cut off. Therefore, adopting oxygen content analyzer for coke-oven coal gas is crucial.
The ST9100CN type of coke-oven coal gas analysis system is specially & elaborately designed by our company for online continuous detection of gas components in coke-oven coal gas. It has high reliability, adopts the top-class advanced sensors; possesses high detection accuracy and long service life; combined with our company’s patented technology product which is called “Sampling Pretreatment Device”. Thus constitutes a process analysis system that possesses complete functions, safety and reliability, low maintenance workload, easy operation as well as long service life.
Product Characteristics
1. This system realizes advanced control and maximizes benefits.
2. The system design is stable and reliable, with low maintenance cost and less maintenance workload.
3. Discover abnormal working conditions in time, so as to avoid shutdown for maintenance.
4. The device of gas component analysis is divided into single-point continuous analysis and multi-point patrolling analysis, and is designed in accordance with user’s requirements.
5. Reasonably set the cyclic interval time of analysis and monitoring based on the actual situation of user.
6. The system is suitable for analyzing the gases that come from coke oven, coal-gas generator, hot blast furnace, and silico-manganese furnace etc.
7. The physical sampling method is used to vaporize tar, benzene and other condensates at high temperature, and then separate them by washing with water, hence achieving maintenance-free and safe operation of the sampling system & pretreatment system.
8. The system is configured and selected with the best devices, so it has the advantages of safety, reliability, corrosion resistance, no blockage, true sampling, fast response, and high analysis accuracy etc.
System Composition
The online analysis system comprises of a sampling system, a pretreatment system, a calibration system, an online analyzer, a sub-cabinet, and its public utilities etc.
Coal-coking System Selection
| Selected Model | Detection Point-locations | Detected Components | Purposes |
| ST9100CN | Front/rear of the electrostatic tar collector | O2 | Production safety |
| Outlet of the hot blower for dry-quenching coke | CO H2 CO2 | Waste heat utilization Safe production | |
| Coal-gas pressurization station | CO CH4 H2 | Saving energy and reducing consumption | |
| Before and after the desulfurization tower | SO2 O2 | Environmental protection and process control | |
| Main pipe of the purified coal gas | H2S | Environmental protection and quality control |
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