Tar water


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A cold infusion of tar in water, used as a medicine.
- Knight.
The ammoniacal water of gas works.

See also: Tar, Tar

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Then we should weigh the quality of mixed tar water and we analyze the composition of gas, the last we determine the temperature when the tar is least.
2 shows that the quantity of generated pyrolysis gas is more and more and generated mixed tar water changes a little when the temperature rises.
The basic of this experiment is under the condition of hypoxia or anaerobic, the moisture in the coal sample is very little in the same quality, there is no oxygen in the reaction and little generated water; so the difference of mixed tar water is a little in the each temperature.
Table-3: The influence of different heating rate on the tar water and gas production
4 shows that the gas reduces firstly, then increases to the peak, finally reduces slowly, and the mixed tar water changes little as the increase of the heating rate.
6 shows that the quantity of generated gas is more and more and mixed tar water changes a little as the volatile of pyrolysis char rising.
Compared the former two groups of experiments, the mixed tar water obviously decreases, the reason is that some water what is generated by cracking coal in the initial cracking furnace is stopped by pyrolysis char and it can't go through the secondary cracking furnace and gather in the front end of the secondary cracking furnace quartz tube [13].
Table-5: The influence of different volatile of pyrolysis tar on the tar water and gas production.
Table-7: The influence of different particle size of pyrolysis tar on the tar water and gasproduction.
Thus, phenols, ketones, volatile alkalis, and acids are being extracted at purification of tar water. Also, it is possible to obtain benzene, toluene, and solvents at pyrolysis of gas naphtha, primary gas and products of light fraction.