SU1238738A3 - Drying installation - Google Patents

Description

2. Installation in accordance with claim 1, 1, and 25, which means that the heat exchanger at the outlet of the first cavity is equipped with a drain screw, and the device for separating the condensed liquid from the gas is made in the form of sequentially connected and installed at the outlet of the turbine ice separators and liquids, the last of which the invention relates to heat engineering, and more specifically to drying installations.

The aim of the invention is to increase the operational reliability and cost-effectiveness when drying a fabric coated with an expensive solvent.

I-: .- ..

Fig, 1 shows the scheme of the proposed installation; FIG. 2 is a diagram of the purification unit; the second cavity of the heat exchanger is included in the gas circuit at the outlet of this unit; on fig.Z - the same, the second cavity of the heat exchanger is included in the gas circuit at the entrance to this

The installation contains a fan 1, a heater 2, a drying chamber 3, a cleaning unit 4 having a drive motor 6 mounted on one shaft 5, a compressor 7 and a turbine 8 and a heat exchanger 9 placed between the compressor 7 and the TSF 8; drain valves 10 and 11, ice separators 12 and 13 liquids, additional heater 14, bypass 15 and 16 bypass line.

Installation (Fig.) Works as follows.

In the heater 2, by supplying heat, the gas supplied by the fan 1 is heated, which enters the drying chamber 3, where the fabric is dried, covered with an expensive solvent. The resulting gas-vapor mixture then completely or partially enters the purification unit 4, where the solvent is separated from it, and the purified gas is sucked in together with the remaining part of the vapor-gas mixture.

ryh is connected to the entrance to the second cavity of the heat exchanger, at the exit of which an additional heater is installed,

3, Installation according to claim 1, characterized in that the second cavity of the heat exchanger at the outlet is provided with a drain valve.

rum 1 and is directed through heater 2 again into the drying chamber 3..

In the purification unit 4 (Fig. 2), a selected Part of the gas-vapor mixture is sucked in by the compressor 7 and injected into the heat exchanger 9, where it is cooled with a reverse shock, obtained by expanding the gas in the turbine 8. When cooled, a part of the liquid solvent is removed from the compressed gas-vapor mixture, which is discharged through the drain valve 10. After the turbine 8, the temperature of the mixture is greatly reduced, the remaining part of the solvent is mixed in both in the form of ice, which is separated from the gas stream in the separator} 2, and in the form of a liquid released in the separator 13. The cooled and solvent-free gas is further heated by the direct flow in the heat exchanger 9, after which it is heated to the required temperature in the additional heater 14 and is again used for drying the fabric.

In order to use the waste heat from the purification unit of the secondary heat for heat supply, the secondary heat is removed via line 16 from the purification unit 4.

When executing the cleaning unit according to the scheme shown in FIG. 3,

The vapor-gas mixture is first directed to the heat exchanger 3, where it cools down by the return flow from the turbine 8, then expands in the turbine to low pressure and low temperature, after which it is heated by the direct flow in the heat exchanger 9, is entrained by the compresso 7 and sent im on the process of fabric lugs. Such an implementation unit

312387384

cleaning is recommended when using a solvent - water. In this case, the atmospheric gas of atmospheric air as the ambient gas as the surrounding gas and the refrigeration cycle as the ambient gas.

Compiled by R. Danilov Editor L. Veselovska Tehred I. Veres

Order 3310/61 Circulation 634Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Proofreader M. Pojo

Claims (3)

1. DRYING UNIT, containing a gas circuit in which a fan, heater, drying chamber and cleaning unit are installed, characterized in that, in order to increase operational reliability and economy when drying a fabric coated with an expensive solvent, the cleaning unit is made in the form of a gas refrigerating machine mounted on one shaft drive motor, a compressor having a compression ratio of at least 1.3: 1, a turbine located between the compressor and the turbine of a two-cavity heat exchanger, included along the second cavity into the gas circuit after the drying chamber, and a device for separating the condensed liquid from the gas. fie! SU < _m 1238738 AZ 2. Installation according to π.1, wherein the heat exchanger at the outlet of the first cavity is equipped with a drain screw, and the device for separating the condensed liquid from the gas is made in the form of ice and liquid separators connected in series and installed at the outlet of the turbine, the last of which is connected to the entrance to the second cavity of the heat exchanger, at the outlet of which an additional heater is installed. 3, Installation according to claim 1, characterized in that the second cavity of the heat exchanger at the outlet is equipped with a drain valve.