JP5537166B2 - Waste steam recovery device - Google Patents

Description

  The present invention is, for example, waste steam discarded from various steam-using devices such as shrink tunnels, steamers, rubber vulcanizers, etc., and is recovered by exchanging heat so that it can be trapped inside and outside the factory building. It is related with the waste steam recovery device which can eliminate.

  The waste steam recovery unit is a shrink tunnel that uses steam, and vacuum suction means that consists of an ejector, a liquid tank, and a circulation pump connected by a waste steam recovery pipe. By sucking with the sucking means, it is possible to eliminate waste steam that can get trapped.

  In this waste steam recovery device, a large amount of cooling water must be discharged from the nozzle part of the ejector, and the temperature of the mixed fluid of waste steam and cooling water mixed in the ejector becomes low, and this mixed fluid There was a problem that the usage of was limited.

Japanese Patent Laid-Open No. 2002-5582

  The problem to be solved is to provide a waste steam recovery device that can maintain the temperature of the mixed fluid of waste steam and cooling water at a relatively high temperature.

  The present invention discharges waste steam flowing down from a steam device to a predetermined location, and a two-stage system as a suction means through an indirect heat exchange means in a waste steam passage through which the waste steam flows. A jet scrubber is connected to connect the first stage suction port of the two-stage jet scrubber to the liquid outlet of the heat exchange means, and the second stage suction port of the two-stage jet scrubber is a heat exchange means. Connected to the steam outlet.

  The waste steam recovery apparatus of the present invention heat-condenses a part of the waste steam by heat exchange means to condense it into condensate, and sucks it from the liquid outlet to the first suction port of the two-stage jet scrubber. The amount of waste steam sucked from the steam outlet of the heat exchange means to the suction port of the two-stage jet scrubber can be reduced, and the amount of cooling water discharged by the jet scrubber can be greatly reduced. And the temperature of the mixed fluid of cooling water can be kept relatively high.

The block diagram which shows the Example of the waste steam recovery apparatus of this invention.

  In the present invention, a two-stage jet scrubber is used, and a conventionally known jet scrubber can be appropriately used.

  In this embodiment, as shown in FIG. 1, the waste steam recovery apparatus is composed of a waste steam passage 1, a heat exchange means 2 connected to the waste steam passage 1, and a two-stage jet scrubber 4 as a suction means. Configure.

  The heat exchange means 2 connected to the waste steam passage 1 is configured as an indirect heat exchange means with a sealed tank 3, a cooling water supply pipe 7, and a cooling water discharge pipe 5, and the waste steam passage 1 From this, a part of the waste steam supplied into the tank 3 can be condensed to condensate.

 A steam outlet 8 is provided on the right side of the tank 3 to communicate with the second suction port 10 of the two-stage jet scrubber 4, and a liquid outlet 9 is provided at the lower end of the tank 3 to form a two-stage type. The jet scrubber 4 communicates with the first stage suction port 11.

 The two-stage jet scrubber 4 includes a first-stage jet scrubber 12 and a second-stage jet scrubber 13 arranged in series. A high-pressure water supply pipe 14 is connected to the upper part of the first-stage jet scrubber 12. A hot water discharge pipe 15 is connected to the lower part of the second-stage jet scrubber 13.

The waste steam that flows down from the left to the right in the waste steam passage 1 is partially condensed in the tank 3 of the heat exchange means 2 to become condensate, and the condensate is supplied from the liquid outlet 9 to the first suction port 11. And the water-separated steam is sucked from the steam outlet 8 to the second-stage suction port 10.

  Thus, the amount of waste steam sucked from the steam outlet 8 of the heat exchange means 2 to the second stage suction port 10 is reduced, and the amount of cooling water as high-pressure water discharged by the jet scrubber 4 is greatly reduced. Therefore, the temperature of the mixed fluid of the waste steam and the cooling water discharged from the hot water discharge pipe 15 can be kept relatively high.

  INDUSTRIAL APPLICATION This invention can be utilized for what collect | recovers waste steam discarded from various steam use apparatuses by heat exchange.

DESCRIPTION OF SYMBOLS 1 Waste steam passage 2 Heat exchange means 3 Tank 4 Two-stage jet scrubber 5 Cooling water discharge pipe 7 Cooling water supply pipe 8 Steam outlet 9 Liquid outlet 10 Second stage suction port 11 First stage suction port 14 High pressure water supply Tube 15 Hot water discharge tube

Claims (1)

In what discharges the waste steam flowing down from the steam device to a predetermined place,
In the waste steam passage through which the waste steam flows, through an indirect heat exchange means for separating the waste steam into condensate and steam by condensing the waste steam through a pipe supplied with cooling water , Connect a two-stage jet scrubber as a suction means,
A high-pressure water supply pipe is connected to the upper part of the first stage of the two-stage jet scrubber;
The first stage of the suction port of the two-stage jet scrubber, to discharge the condensate was the separation, as well as connected to the liquid outlet of said heat exchange means,
Said second-stage suction port of the two-stage jet scrubber, for discharging the separated steam, waste vapor recovery apparatus is characterized in that connected to the steam outlet of the heat exchange means.