DD208964A1 - DEVICE FOR DEGASSING WATER - Google Patents

Abstract

THE DEVICE FOR DEGASSING OF WATER ACCORDING TO THE PRINCIPLE OF DEGASSING thinner FLUESSIGKEITSFILME IN LOW VACUUM FOR SINGLE AND MULTI-STAGE COOLING AND CRYSTALLIZATION PLANTS THAT ACCORDING TO THE PRINCIPLE OF RELAXATION EXPANSION WORK IS A VITAL REDUCING THE ENERGY CONSUMPTION OF THE evaporation and KONDENSATIONSGEFAESSEN DOWNSTREAM steam jet VACUUM PUMP REACHED. THEREFORE, THE EVAPORATION AND CONDENSATION DIFFICULTIES WILL BE SWITCHED ON A RELATED SYPHONY DEGASSING CONTAINER. THESE DISCHARGING CONTAINERS ARE CONNECTED TO THE STEAM RADIANT VACUUM PUMP THROUGH A COMMON DRAIN CIRCUIT, THAT THE LAST STEAM RADIATOR OF THE STEAM RADIANT VACUUM PUMP MERGES THE ADDITION OF THE GAS DISPOSED OF THE DRAINING TO THE ATMOSPHAERE. MOREOVER, A PREVACUER CONNECTED TO THE SUCTION LINE OF THE STEAM JET VACUUM PUMP SECURES A QUICK START-UP OF THE SITE. With the associated reduction in the quantity of non-condensable constituents in the capacitors, the energy requirement for the steam jet vaporiser of the steam jet vacuum pump is reduced.

Description

Title of the invention

Device for degassing water

 Field of application of the invention

The invention relates to a device for degassing water for use in single and multi-stage cooling systems and crystallization plants, which operate on the principle of flash evaporation ·

Characteristic of known technical solutions

In refrigeration systems, consisting of separate or arranged in a container expansion evaporator and condenser vessel, which are connected directly or with steam jet compressors, the flash evaporation is due to the generated by steam jet compressor and / or downstream venting unit vacuum, which is lower than the associated vapor pressure of the expansion evaporator water ·

Evolved vapor is either conveyed to the condenser with steam jet compressors or fed to it as a result of existing pressure difference. With the cooling and cold water absorbed and entrained gas in the water in the evaporator and condenser tanks, which are designed in one or more stages depending on the cooling capacity ""

can, introduced.

The gas is supplied with a vapor portion of the respective coldest evaporator stage by means of pipeline or, depending on the pressure distribution in the individual stages, by means of small steam jet

H.M1982 * Ü16Ü8 ⁽

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fed compressor and sucked there from the deaerator.

Object of the invention

The invention achieves a significant reduction of the steam and cooling water consumption of steam jet vacuum pumps of cooling systems.

In conjunction with the reduction in steam consumption, a substantial reduction in the size of the steam jet vacuum pumps is achieved.

Explanation of the essence of the invention

The object is to degas cold and cooling water by means of evaporation and condenser vessels upstream of the refrigeration degassing tanks, which operate on the principle of degassing thin liquid films in low vacuum to degas.

The object is achieved according to the invention in that a degassing vessel with associated siphon is connected in front of each of the evaporation and condensation vessels, the degassing tanks being connected to a common degassing line which opens into the suction nozzle of the last steam jet compressor stage of the steam jet vacuum pump, which opens with a Pre-evacuator is connected by a common suction line to condensate onsgefäß. This ensures that the cooling or cold water flows through cooling systems before entering the evaporation or condensation vessels each have a degassing through the water supply pipe, water distribution chamber, degassing and siphon, where a large part -mit the - · - water entrained gas is deposited. The deposited in the degassing gases are fed via a common degassing to the steam jet compressor of the steam jet vacuum pump, which promotes directly to the atmosphere

 By in the suction line of the steam jet vacuum pump

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integrated pre-evacuator ensures the commissioning of the entire system in a given time unit ·

Thus, only a certain residual portion of the gas enters the evaporation and condensation vessels, as a result of which the amount to be suctioned off by the steam jet vacuum pump is reduced in accordance with the respective operating conditions.

embodiment

The invention will be explained in more detail in the following embodiment · The accompanying drawings show

Fig. 1 - a steam jet cooling system with apparatus for degassing

2 shows an enlarged view of the degassing vessels according to FIG. 1

The steam jet cooling system consists of the evaporation vessel 1, the Kondensationsgefaß 2, the intermediate DampfstrahlVerdichtern, each a degassing tank 3 and 4 with associated siphon 8 and 9, a steam jet vacuum pump 5 and the associated degassing 10, the suction nozzle 11 and the suction line 12 and the pre-evacuator 7 ·

The degassing tanks 3 and 4 are designed so that they from a water supply pipe 19, which opens into the water distribution chamber 13 and the lower conical bottom 15, the degassing chamber 14 and provided with radially arranged and segmentally broken slots 18 flat bottom 17 penetrates, and an upper bottom 16, the water outlet nozzle 20 and the vent pipe 21 consisto The vent pipe 21 is ao arranged "," that "* entrainment of liquid in the degassing 10 is avoided.

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The water flows through the degassing tank 3 via the water supply pipe 19, the water distribution chamber 13 »the annular degassing chamber 14, the water outlet nozzle 20 and the Siphon 8. The slits 18, which are arranged annularly in the flat bottom 17, distribute the supplied water into a plurality of water veils and upon impact with the lower conical bottom 15 effect a surface change of the water. Gases entrained with the water are deposited in the annular degassing space 14 and via the vent pipe 21, the degassing line 10 and the suction nozzle 11 of the steam jet compressor 6 conveying directly to the atmosphere, which simultaneously extracts non-condensable gases with a certain vapor content from a condenser of the steam jet vacuum pump 5 The cooling water supplied to the condenser vessel 2 for condensation is likewise degassed in the degassing vessel 4.

As a result of the existing pressure differences between the evaporation vessel 1 or condensation vessel 2 and the degassing tanks 3 and 4, an independent pumping into the evaporation and condensation vessels 1 and 2 is made possible. The steam jet vacuum pump is connected by a common suction line 12 to the pre-evacuator, whereby a quick start-up of the cooling system is made possible.

Claims (2)

240683 Inventive Approach 1. An apparatus for degassing water to cooling systems, consisting of an evaporation and condensation, vessel and a steam jet vacuum pump, characterized in that the evaporation vessel (1) and the condensation vessel (2) each have a degassing tank (3) and (4 ) with associated siphon (8) and (9) is connected upstream, wherein the degassing tank (3) and (4) with a common degassing line (10) are connected, which in the suction nozzle (11)) of the last steam jet compressor stage (6) of the steam jet vacuum pump (5) opens, which is connected to the pre-evacuator (7) through a common suction line (12) to the condensation vessel (2) · 2. Apparatus for degassing water to cooling systems according to item 1, characterized in that the degassing tank (3) and (4) from a water distribution chamber (13) and an annular degassing chamber (14) and the lower conical bottom (15) ι cLem upper floor (16), the flat, with radially arranged and multi-segmentally interrupted slots (18) provided bottom (17), the floors (15) and (17) and the degassing space (14) penetrating to the water distribution space (13) open Water supply pipe (19) and the above the lower bottom (15) arranged water outlet nozzle (20) and the below the flat bottom (17) arranged vent pipe (21) exist  For this ^ pages drawings