CN204121794U - The different ester rectifier unit of a kind of acrylic acid - Google Patents

Abstract

The utility model relates to the different ester rectifier unit of a kind of acrylic acid, the discharging opening of described buffering transfer still is connected by pipeline with the charging aperture of heat exchanger, the discharging opening of heat exchanger is connected by pipeline with the charging aperture of de-light still, the discharging opening of de-light still is connected by the charging aperture of pipeline with de-heavy still, the discharging opening of de-heavy still is connected with condenser, de-light still is all provided with steam-heated pipe line with de-heavy still, and water back is connected with heat exchanger coil.The utility model has the advantage of: the utility model device and technique thereof add heat exchanger and warm-up phase thereof, carry out the different ester of acrylic acid after preheating to carry out Steam Heating at de-light still and take off light required heat and just greatly reduce, exhaust steam is sent to heat exchanger simultaneously, as the energy of the different ester preheating of acrylic acid, so just take full advantage of the amount of residual heat will of steam, decrease steam use amount simultaneously, save production cost.

Description

The different ester rectifier unit of a kind of acrylic acid

Technical field

The utility model relates to a kind of rectifier unit, the different ester rectifier unit of especially a kind of acrylic acid.

Background technology

Along with the develop rapidly of chemical industry, reach required object in Chemical Manufacture while, also need the cost that economizes on resources.

At present, in the rectifier unit of the different ester of acrylic acid and technique, heat exchanger and warm-up phase thereof are not set, so carry out de-gently process time, need different for acrylic acid ester to be heated to de-light temperature from normal temperature, required steam is comparatively large, and cost is very high, therefore, just must develop and a kind ofly can reduce steam consumption and the device saved production cost, through retrieval, not find the same or analogous device with the utility model.

Summary of the invention

The technical problems to be solved in the utility model is to provide and a kind ofly can reduces steam consumption and the device saved production cost.

For solving the problems of the technologies described above, the technical solution of the utility model is: the different ester rectifier unit of a kind of acrylic acid, comprise and set gradually buffering transfer still, de-light still, de-heavy still and condenser, its innovative point is: be provided with a heat exchanger between described buffering transfer still and de-light still, and buffering transfer still, heat exchanger, de-light still, de-heavy still and condenser set gradually;

The described discharging opening of buffering transfer still is connected by pipeline with the refrigerant charging aperture of heat exchanger, the refrigerant discharging opening of heat exchanger is connected by pipeline with the charging aperture of de-light still, the discharging opening of de-light still is connected by the charging aperture of pipeline with de-heavy still, and the discharging opening of de-heavy still is connected with condenser;

De-light still is all provided with steam-heated pipe line with de-heavy still, and water back is connected with the import of heat exchanger heating agent.

The utility model has the advantage of: the utility model device adds heat exchanger and warm-up phase thereof, carry out the different ester of acrylic acid after preheating to carry out Steam Heating at de-light still and take off light required heat and just greatly reduce, exhaust steam is sent to heat exchanger simultaneously, as the energy of the different ester preheating of acrylic acid, so just take full advantage of the amount of residual heat will of steam, decrease steam use amount simultaneously, save production cost.

Accompanying drawing explanation

Fig. 1 is the schematic flow sheet of the different ester rectifier unit of the utility model acrylic acid.

Detailed description of the invention

The different ester rectifier unit of a kind of acrylic acid as shown in Figure 1, comprises buffering transfer still 1, de-light still 3, de-heavy still 4, condenser 5 and heat exchanger 2.

The discharging opening of buffering transfer still 1 is connected by pipeline with the charging aperture of heat exchanger, the discharging opening of heat exchanger 2 is connected by pipeline with the charging aperture of de-light still 3, the discharging opening of de-light still 3 is connected by the charging aperture of pipeline with de-heavy still 4, and the discharging opening of de-heavy still 4 is connected with condenser 5.

De-light still 3 is all provided with steam-heated pipe line with de-heavy still 4, and water back is connected with heat exchanger 2 coil pipe.

Its operation principle is: first carried out being preheated to 56 DEG C ~ 64 DEG C from buffering transfer still 1 inflow heat exchanger by the different ester of acrylic acid to be processed for normal temperature; Subsequently different for acrylic acid complete for preheating ester is flow to de-light still 3, leading to temperature from de-light still 3 jet chimney is that the steam of 174 DEG C ~ 179 DEG C carries out de-light process to the different ester of acrylic acid, exhaust steam temperature after heated is 132 DEG C and does preheating energy to 138 DEG C by row of conduits heat exchanger 2, and light phase refuse discharges from still top; Take off after gently completing and different for acrylic acid ester is flowed into de-heavy still 4, leading to temperature from de-heavy still 4 jet chimney is that the steam of 174 DEG C ~ 179 DEG C carries out de-ly heavily processing to the different ester of acrylic acid, exhaust steam temperature after heated is 132 DEG C and does preheating energy to 138 DEG C by row of conduits heat exchanger 2, and heavy phase refuse discharges at the bottom of still; After de-heavy, different for acrylic acid ester is slowly flowed through condenser 5 condensation, finally reach production requirement.

Claims (1)

1. the different ester rectifier unit of acrylic acid, comprise and set gradually buffering transfer still, de-light still, de-heavy still and condenser, it is characterized in that: be provided with a heat exchanger between described buffering transfer still and de-light still, buffering transfer still, heat exchanger, de-light still, de-heavy still and condenser set gradually;

The described discharging opening of buffering transfer still is connected by pipeline with the refrigerant charging aperture of heat exchanger, the refrigerant discharging opening of heat exchanger is connected by pipeline with the charging aperture of de-light still, the discharging opening of de-light still is connected by the charging aperture of pipeline with de-heavy still, and the discharging opening of de-heavy still is connected with condenser;

De-light still is all provided with steam-heated pipe line with de-heavy still, and water back is connected with the import of heat exchanger heating agent.