Chemical tar yield
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Dear friends, please discuss what is the tar yield in your factory? How can we improve?
The coal we put into the furnace has low volatilization, and the amount of lean coal is large, so the tar is relatively low, which is about 2.6% for dry coal. As for increasing production, there are relevant posts in the forum and you can search it.
There is a related post here http://bbs.hcbbs.com/viewthread.php?tid=315126&highlight=%BD%B9%D3%CD%2B%CC%E1%B8%DF
The average tar yield of our factory last year was 2.6, which is not bad. This area is the company's profit.
Between 2.8%~3.1%.
Coal tar yield is mainly related to the volatile content of coal blending. High volatile content means high tar yield.； For example, Shanxi coking coal is relatively abundant, the coal blend has low volatile content, and the tar yield is generally between 2.6% and 3.0%. ； There are relatively more gas coals in East China. The volatile content of coal blends is generally above 28%, and the coal tar yield can reach 4.0%.
Tar yield has a very close relationship with the volatile matter of the blended coal and coke oven operation. The volatile content of our company's tamped coke oven blended coal is about 32%, and the yield is about 3.5%.
In addition to the influence of the volatile content of the coal on the tar recovery rate, the coke oven operation also has a greater influence. First of all, it is necessary to ensure that the coal is filled, the thermal engineer confirms the appropriate standard temperature according to the turnover time, the furnace top space temperature is controlled lower, the coke oven gas collecting tank pressure is controlled more stably, the furnace leakage is less, the bottom of the carbonization chamber has a positive pressure at the end of coking for a long time, and the gas purification tar mist is captured cleaner.
The yield of our factory is about 3.2%. The coal source is relatively mixed. The volatile content of the coal entering the furnace is roughly 28%-30%.
Our factory is about 3.4%, gas is fat, burnt and thin 30:35:25:10
In our factory, the volatile content between 2.8-3 and between 24-27 should have a certain relationship with the coke oven operation and the formulation of the heating system.
Generally speaking, the tar yield is related to the volatile content of the coal blend, and is also related to the operation of the coke oven, such as the space temperature of the furnace top, coking time, etc. The tar yield of our factory is generally between 3.5 and 3.8
Is there any mistake? The tar yield of our factory is 4.0
The tar yield is closely related to the volatile matter of the blended coal and the coke oven operation. In our factory, it is generally between 3.8-4.2% of dry coal.
Tar yield is closely related to coking coal blending, and the change of coal blending ratio directly affects tar yield. Our factory is between 2.8~3.2%.
The coking plant I'm going to seems to be at 3.0%.
The top-mounted 5.5-meter low-temperature carbonization coking in my unit has a tar yield of 3.2, which has recently been reduced to about 3.0. The more coal is loaded, the more gas will be produced. On the premise that the coal blending does not change much, the tar production will definitely increase. The yield mainly depends on the control of the coal proportion and the temperature of the coke oven, the control of the temperature and pressure of the gas collector, and the control of condensation operation indicators including the temperature of the primary cooler, the liquid level control of the remaining ammonia water tank, and the liquid level control of the mechanized tar clarification tank.
The tar yield of our factory is 3%.
The recovery rate of tar is directly related to the volatile content of coal blending, and is also related to the operation of the coke oven, such as the temperature of the top space of the coke oven carbonization chamber, coking time, etc. The tar yield of our factory is 4.0. Our factory mainly uses 1\3 coking coal.