发明名称 |
METHOD OF PURIFYING HYDROCHLORIC ACID |
摘要 |
Provided is a method of purifying hydrochloric acid by removing an organic substance having a boiling point of−25° C. to 120° C. under atmospheric pressure from a first organic substance-containing hydrochloric acid that contains the organic substance and has a hydrogen chloride concentration higher than an azeotropic hydrogen chloride concentration under atmospheric pressure. The method includes the step of subjecting a second organic substance-containing hydrochloric acid to distillation using a distillation tower under atmospheric pressure, to distill out the organic substance from a top of the distillation tower. The second organic substance-containing hydrochloric acid is obtained by mixing the first organic substance-containing hydrochloric acid and water or dilute hydrochloric acid and has the hydrogen chloride concentration lower than the azeotropic hydrogen chloride concentration under atmospheric pressure.
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申请公布号 |
US2011233045(A1) |
申请公布日期 |
2011.09.29 |
申请号 |
US200913132217 |
申请日期 |
2009.11.24 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
SHIMIZU TOYOMITSU;OMOTO NORIHITO;FUTAGAMI SHOICHI;MIYAMURA SADAYUKI |
分类号 |
B01D3/36;C01B7/07 |
主分类号 |
B01D3/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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