CN1061643C

CN1061643C - Ephedrine leaching method

Info

Publication number: CN1061643C
Application number: CN96122946A
Authority: CN
Inventors: 薄学璞
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-15
Filing date: 1996-10-15
Publication date: 2001-02-07
Anticipated expiration: 2016-10-15
Also published as: CN1180068A

Abstract

The present invention relates to a new ephedrine extraction process, and its original process includes two-tank marshalling and three-stage cover extraction, and has the defects of unbalanced extraction difficulty and excessive low-efficiency extraction, etc. due to the presence of empty tank and water, said process can divide the third extraction into two stages, and can raise ephedrine yield by 5.488%.

Description

A kind of ephedrine leach extraction method

At present, the water logging Herba Ephedrae is adopted in the ephedrine lixiviate more, more spissated method is carried out in immersion liquid.In leaching process, often adopt two jars of marshallings, three cover soaking technologies.This technology, as disregard initial procedure, then by following flow process cycle operation: the secondary immersion liquid that the second jar becomes the second jar is poured in the immersion liquid for the third time of first jar into, at this moment, the slagging-off of first jar, maintenance, dress grass, the lixiviate of second jar.After the lixiviate of second jar, pour this immersion liquid into a immersion liquid that the first jar becomes the first jar, at this moment, second jar pouring carries out three lixiviates, and the first jar carries out the lixiviate first time.Emit finished product water after the lixiviate of first jar, the first jar is poured in three immersion liquid of second jar again into becomes the immersion liquid of first jar secondary.Behind the slagging-off of second jar, maintenance, the dress grass, the second jar is poured in the immersion liquid of first jar secondary into becomes an immersion liquid of second jar.The first jar adds water and carries out three lixiviates, emits finished product water after the lixiviate of second jar.The secondary immersion liquid that the second jar becomes the second jar is poured in three immersion liquid of first jar into.The first jar removes the gred, overhauls, adorns grass again, and by that analogy, this technology exists following problem: 1, after the canned grass of first, the lixiviate of second jar secondary has just begun soon, can not forward immersion liquid to the first jar at once.In like manner, pouring immediately behind the canned grass of second such as promptly causes at water problems, waits the water time to be approximately about 100 minutes, singly soaks journey time waste 11.63～16.13%.2, the difficulty imbalance is leached in each time.3, in order to improve the method that leaching yield adopts the slag washing water recycling, increased difficulty for three lixiviates, and time thin rate is not high.4, the poor efficiency immersion liquid is too much, and each time immersion liquid is canful and adds, and second and third time is when leaching, at the bottom of the grass slag is sunken to jar, and do not have stirring, only depend on infiltration to leach, then diffusion, thereby extract is difficult to be diffused into top, top immersion liquid effect is minimum and become the poor efficiency immersion liquid.The existence of the problems referred to above has directly influenced the yield of ephedrine, has reduced benefit.

The purpose of this invention is to provide a kind of journey time availability height that soaks, it is lower and than balance, invalid immersion liquid reduces, and is not changing existing equipment substantially that difficulty is leached in each time, seldom increases the novel process that improves the ephedrine yield under the situation of productive expense.

Technical scheme: this method adopts two jars, the Herba Ephedrae of in jar, packing into, be soaked in water, its process is to pour the secondary immersion liquid of a jar into other jar it is carried out the lixiviate first time, three immersion liquid are poured another jar into and are carried out the lixiviate second time, emit finished product water after the lixiviate for the first time, the secondary immersion liquid is poured out Hou Jiashui and is carried out lixiviate for the third time, be characterized in: twice adding of the moisture of said lixiviate for the third time, carry out two sections lixiviates, after every section lixiviate finished, its immersion liquid was all poured another jar into it is carried out the lixiviate second time.

Adopt such scheme, divide lixiviate for the third time two sections to carry out, leading portion takies the water times such as former slack tank, and the problem of water such as slack tank has originally solved.Because the water of twice adding is canful not, water consumption does not increase, thereby a jar interior water level has reduced, make original upper strata poor efficiency immersion liquid become efficient immersion liquid, improved the lixiviate ability, simultaneously, because another jar injected in above-mentioned immersion liquid again at twice, be equivalent to another jar has been carried out once stirring, also improved the lixiviate second time ability of another jar, make that also the gap of lixiviate difficulty has been dwindled between former each time of technology lixiviate.According to measuring and calculating: this technology can improve yield 5.488% if combine with the new rule of management of a cover.Because ephedrine sells well in the international market very much, holds at high price, and has reached 40～500,000 yuan/ton at present, thereby has not increased manpower, does not change basically under the situation of appointed condition, obtains such yield, its economic worth is very considerable.

Introduce an embodiment below:

If first jar and second jar, an immersion liquid of first jar is emitted and is finished product water, two sections three immersion liquid of second jar are poured the first jar at twice into it are carried out the lixiviate second time, the slagging-off of second jar, maintenance, the dress grass, the immersion liquid of first jar secondary is poured the second jar into it is carried out the lixiviate first time, the second jar is emitted finished product water after the lixiviate, the first jar adds portion water and carries out leading portion lixiviate for the third time, immersion liquid adding second jar carries out the lixiviate second time to it after the lixiviate, simultaneously, the first jar adds portion water again and carries out back segment lixiviate for the third time, immersion liquid adds the second jar again and continues it is carried out lixiviate second time after the lixiviate, and at this moment, the first jar removes the gred, maintenance, the dress grass, pour the secondary immersion liquid of second jar into the first jar then it is carried out the lixiviate first time, by that analogy circulation.

Claims

1, a kind of ephedrine leach extraction method, this method adopts two jars, the Herba Ephedrae of in jar, packing into, be soaked in water, its process is to pour the secondary immersion liquid of a jar into other jar it is carried out the lixiviate first time, three immersion liquid are poured another jar into and are carried out the lixiviate second time, emit finished product water after the lixiviate for the first time, the secondary immersion liquid is poured out Hou Jiashui and is carried out lixiviate for the third time, it is characterized in that: twice adding of the moisture of said lixiviate for the third time, carry out two sections lixiviates, after every section lixiviate finished, its immersion liquid was all poured another jar into it is carried out the lixiviate second time.