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吸收萘的方法大致有三种

来源:http://www.jnjdbc.cn/ 日期:2023-05-27 发布人:admin
吸收萘的方法很多,一般采用焦油洗油吸收,洗油的性质如下表所示。吸收萘的方法大致有下列三种,下面精萘厂家为您分析:
There are many methods for absorbing naphthalene, usually using tar wash oil for absorption. The properties of the wash oil are shown in the table below. There are roughly three methods for absorbing naphthalene, and the refined naphthalene manufacturer will analyze for you below:
洗油的性质
Properties of washing oil
(一)吸收法
(1) Absorption method
用洗油吸收煤气中的萘,再将富萘油蒸馏,除萘后的洗油循环使用。根据富萘油的蒸馏方式可以分为以下三种:
Absorb naphthalene from gas with washing oil, then distill the naphthalene rich oil, and recycle the washing oil after removing naphthalene. According to the distillation methods of naphthalene rich oil, it can be divided into the following three types:
(1)侧线切出法。
(1) Side cut method.
将富萘油与洗苯富油同时在一个蒸馏塔内蒸馏,从塔的侧线切出萘馏分。这种方法建设投资低,但是萘馏分中含萘量低,洗油损耗大。
Distill the naphthalene rich oil and benzene washing rich oil simultaneously in a distillation tower, and cut the naphthalene fraction from the side line of the tower. This method has low construction investment, but the naphthalene content in the naphthalene fraction is low and the washing oil loss is large.
(2)两段蒸馏法。
(2) Two stage distillation method.
采用两个蒸馏塔蒸馏,从第一塔的塔顶取出萘-苯馏分,塔底取出洗油。这种方法操作简单,切出的萘馏分含萘高。
Two distillation towers are used for distillation, with naphthalene benzene fraction taken out from the top of the first tower and wash oil taken out from the bottom of the tower. This method is simple to operate and the cut naphthalene fraction contains high naphthalene.
(3)单独蒸馏法洗。
(3) Wash by separate distillation method.
萘富油不与洗苯富油混合,而采用单独蒸馏的方法。蒸馏采用(2)项的两段蒸馏法。这种方法建设费用高、占地面积大。但这个方法的大优点是腐蚀成分集中在萘蒸馏部分,这样可降低苯蒸馏部分的材质标准。
Naphthalene rich oil is not mixed with benzene washing rich oil, but is distilled separately. Distillation adopts the two-stage distillation method in item (2). This method has high construction costs and a large floor area. But the major advantage of this method is that the corrosive components are concentrated in the naphthalene distillation section, which can reduce the material standard of the benzene distillation section.
(二)冷却法
(2) Cooling method
在冷却煤气的同时使萘析出,并与冷却水一同流出,往冷却水中混入焦油,吸收水中的萘,然后静置分离出冷却水。水在凉水架冷却后循环使用。
While cooling the gas, naphthalene is precipitated and flows out together with the cooling water. Tar is mixed into the cooling water to absorb the naphthalene in the water, and then the cooling water is separated by standing still. The water is recycled after being cooled in a cooling rack.
这个方法的大优点是不要蒸馏装置,建设费用约为前述方法的一半,并且不必担心因腐蚀而中断操作。在处理萘比较麻烦的冬季,因水温低;煤气冷却的幅度可增大,所以效率也提高。能够大大改进维护检修。但是,采用型式的凉水架冷却循环水时,会污染环境,如果是换热器,则担心堵塞管子,尤其作为动力,每小时需消耗几吨蒸汽,所以操作费增高些。
The major advantage of this method is that it does not require distillation units, the construction cost is about half of the previous method, and there is no need to worry about interrupting operations due to corrosion. In the winter when dealing with naphthalene is quite troublesome, due to the low water temperature; The cooling range of gas can be increased, so the efficiency also improves. It can greatly improve maintenance and repair. However, when using a type of cooling water rack to cool the circulating water, it will pollute the environment. If it is a heat exchanger, there is a concern about clogging the pipes, especially as power, which requires several tons of steam per hour, so the operating cost will increase.
精萘厂家
(三)直接油冷方法
(3) Direct oil cooling method
此方法是b冷却法的进一步发展,采用焦油或重油代替冷却水直接喷洒煤气并吸收萘,吸收了萘的焦油、重油作为燃料油使用是没有问题的,但该法除萘效率比前述两种方法都低。
This method is a further development of the B cooling method, which uses tar or heavy oil instead of cooling water to directly spray gas and absorb naphthalene. The tar and heavy oil that absorb naphthalene can be used as fuel oil without any problems, but the naphthalene removal efficiency of this method is lower than that of the previous two methods.
吸收萘的方法相关事项就讲解到这里了,希望能够给您好的帮助,更多事项就来我们网站http://www.jnjdbc.cn咨询了解!
That's all for the introduction of the methods for absorbing naphthalene. I hope you can be helpful. For more information, please come to our website http://www.jnjdbc.cn Consultation and understanding!
此文关键词:精萘厂家 

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