CN206473992U - A kind of drying device in famotidine side chain production - Google Patents

Abstract

Drying device in a kind of famotidine side chain production of the utility model, kettle is produced including HCl gases, the HCl gases produce kettle discharge nozzle connection HCl gas driers, the HCl gas driers discharge end connects famotidine side chain reactor, the HCl gas driers include being sequentially communicated the first drying bottle, second drying bottle, anti-suck bottle, the first drying bottle air inlet pipe connection HCl gases produce kettle discharge nozzle, escape pipe connects the second drying bottle air inlet pipe, the second drying bottle escape pipe connection anti-suck bottle air inlet pipe, the anti-suck bottle escape pipe connection famotidine side chain reactor air inlet pipe, first drying bottle, deposited in second drying bottle equipped with the concentrated sulfuric acid, its air inlet pipe is located at below concentrated sulfuric acid liquid level, the anti-suck bottle is vacant bottle.

Description

A kind of drying device in famotidine side chain production

Technical field

The utility model is related to chemical production field, and in particular to the drying device in a kind of famotidine side chain production.

Background technology

In being produced under current famotidine side chain vacuum condition, the HCl gases produced in preposition reactor need to be led to Cross to enter after drying device is dried and carry out the reaction of correlation to produce famotidine side chain in the reflection kettle for placing β-chloroethyl nitrile, And usual drying device uses in the storage tank of titanium steel and deposits cellular anhydrous CaCl₂It is dried, current drying device There is problems with, one, drying system use titanium steel, get rusty easily corrosion when in use, two, cellular anhydrous CaCl₂It is right The drying effect of HCl gases can not be determined, and the replacement cycle also can not effectively determine that the quality easily to product is impacted, 3rd, it is not provided with preventing the device of anti-suck when production process stops in drying device（A series of reaction is all in vacuum bar Completed under part, production Hcl is an exothermic process, when the reactor for producing Hcl is because the reaction time is long, produce Hcl temperature in the kettle drop When low, pressure can be reduced in kettle, behind in kettle liquid suck-back just occurs）, misoperation produce suck-back easily explode.

The content of the invention

The technical problems to be solved in the utility model is to provide the drying device in a kind of famotidine side chain production, uses New drying device, overcomes problems of the prior art.

The utility model is achieved through the following technical solutions：

A kind of drying device in famotidine side chain production, including HCl gases produce kettle, and the HCl gases produce kettle Discharge nozzle connects HCl gas driers, and the HCl gas driers discharge end connects famotidine side chain reactor, institute Stating HCl gas driers includes being sequentially communicated the first drying bottle, the second drying bottle, anti-suck bottle, and first drying bottle enters Tracheae connection HCl gases produce kettle discharge nozzle, escape pipe and connect the second drying bottle air inlet pipe, and the second drying bottle escape pipe connects Logical anti-suck bottle air inlet pipe, the anti-suck bottle escape pipe connection famotidine side chain reactor air inlet pipe, described first dries Deposited in bottle, the second drying bottle equipped with the concentrated sulfuric acid, its air inlet pipe is located at below concentrated sulfuric acid liquid level, the anti-suck bottle is vacant bottle.

The further improvement project of the utility model is that first drying bottle, the second drying bottle, anti-suck bottle are three necks Flask, is positioned on support.

The further improvement project of the utility model is that first drying bottle, the second drying bottle, anti-suck bottle set air inlet Pipe, the neck of escape pipe are provided with rubber seal, and the air inlet pipe, escape pipe are inserted in bottle through rubber seal.

The further improvement project of the utility model is, first drying bottle, the second drying bottle, the bottle on anti-suck bottle top Drawing liquid valve is provided with mouthful.

The utility model has the following advantages that,

The utility model is used as drier using the three-neck flask of glass material water white transparency（The utility model uses dense sulphur Acid）Storage device can easily observe the service condition of the concentrated sulfuric acid, intuitively clear and definite when can change drier（Dense sulphur Acid blacks, and is when needing to change during liquid increase in flask）, on the first drying bottle, the second drying bottle, anti-suck bottle top Drawing liquid valve is set on bottleneck, in that context it may be convenient to which liquid in bottle is aspirated using pump, vacant anti-suck bottle is added, prevents The problem of occurring suck-back when only reaction stops, the air-tightness of drying device is ensure that using rubber seal.

Brief description of the drawings

Fig. 1 is original production apparatus structure schematic diagram.

Fig. 2 is the utility model structural representation.

Embodiment

As shown in Figure 1 and 2, the drying device in a kind of famotidine side chain production, including HCl gases produce kettle 1, described HCl gases produce the discharge nozzle of kettle 1 connection HCl gas driers 2, and the discharge end communicating method of HCl gas driers 2 is not replaced Fourth side chain reactor 3, the HCl gas driers 2 include being sequentially communicated the first drying bottle 21, the second drying bottle 22, anti-down Bottle 23 is inhaled, the air inlet pipe of the first drying bottle 21 connection HCl gases produce the discharge nozzle of kettle 1, escape pipe and connect the second drying bottle 22 Air inlet pipe, the escape pipe of the second drying bottle 22 connection anti-suck 23 air inlet pipe of bottle, 23 escape pipe communicating methods of the anti-suck bottle Do not replace and deposited in the air inlet pipe of fourth side chain reactor 3, first drying bottle 21, the second drying bottle 22 equipped with the concentrated sulfuric acid, its air inlet pipe Below concentrated sulfuric acid liquid level, the anti-suck bottle 23 is vacant bottle.It is first drying bottle 21, the second drying bottle 22, anti-down It is three-neck flask to inhale bottle 23, is positioned on support 5.First drying bottle 21, the second drying bottle 22, anti-suck bottle 23 are set Air inlet pipe, the neck of escape pipe are provided with rubber seal 24, and the air inlet pipe, escape pipe are inserted in bottle through rubber seal. First drying bottle 21, the second drying bottle 22, anti-suck bottle 23 top bottlenecks on be provided with drawing liquid valve 4.

Claims (4)

1. the drying device in a kind of famotidine side chain production, including HCl gases produce kettle（1）, the HCl gases generation kettle （1）Discharge nozzle connects HCl gas driers（2）, the HCl gas driers（2）Discharge end connects famotidine side chain Reactor（3）, it is characterised in that：The HCl gas driers（2）Including being sequentially communicated the first drying bottle（21）, it is second dry Dry bottle（22）, anti-suck bottle（23）, first drying bottle（21）Air inlet pipe connection HCl gases produce kettle（1）Discharge nozzle, outlet Pipe connects the second drying bottle（22）Air inlet pipe, second drying bottle（22）Escape pipe connection anti-suck bottle（23）Air inlet pipe, institute State anti-suck bottle（23）Escape pipe connects famotidine side chain reactor（3）Air inlet pipe, first drying bottle（21）, it is second dry Dry bottle（22）In deposit equipped with the concentrated sulfuric acid, its air inlet pipe is located at below concentrated sulfuric acid liquid level, anti-suck bottle（23）For vacant bottle.

2. the drying device in a kind of famotidine side chain production according to claim 1, it is characterised in that：Described first Drying bottle（21）, the second drying bottle（22）, anti-suck bottle（23）It is three-neck flask, is positioned over support（5）On.

3. the drying device in a kind of famotidine side chain production according to claim 2, it is characterised in that：Described first Drying bottle（21）, the second drying bottle（22）, anti-suck bottle（23）The neck of air inlet pipe, escape pipe is set to be provided with rubber seal （24）, the air inlet pipe, escape pipe pass through rubber seal（24）Insert in bottle.

4. the drying device in a kind of famotidine side chain production according to claim 2, it is characterised in that：Described first Drying bottle（21）, the second drying bottle（22）, anti-suck bottle（23）Drawing liquid valve is provided with the bottleneck of top（4）.