DEGASSING APPARATUS FOR REMOVING DISSOLVED GAS FROM LIQUIDS

• US 20190321755A1
• Filed: 11/02/2017
• Published: 10/24/2019
• Est. Priority Date: 11/29/2016
• Status: Active Grant

• Current Assignee: Minoru Tamura, Yasuaki Tamura
• Original Assignee: Minoru Tamura, Yasuaki Tamura
• Inventors: TAMURA, Minoru, TAMURA, Yasuaki
• Granted Patent: US 11,311,821 B2
• Time in Patent Office: Days
• CPC Class Codes: B01D 19/0036 Flash degasification the other groups take precedence
• CPC Class Codes: B01D 19/0047 Atomizing, spraying, trickling
• CPC Class Codes: C02F 1/20 by degassing, i.e. liberation of dissolved gases degasification of liquids in general B01D19/00; arrangement of degassing apparatus in boiler feed supply F22D
• CPC Class Codes: C02F 2301/063 Underpressure, vacuum

Abstract

The degassing apparatus removes liquid from a vacuum tank 1 with a suction pump 6 and supplies that liquid to a storage tank 9, sprays storage tank 9 liquid into a vacuum tank 1 through a convergent nozzle 7, removes gas from liquid in a state of reduced pressure inside the vacuum tank 1, and stores the degassed liquid in the storage tank 9. The storage tank 9 is an airtight hermetically sealed tank provided with a reduced pressure retaining valve that discharges gas accumulated inside the storage tank.

Claims

1. A degassing apparatus comprising:

vacuum tanks;

a suction pump connected to the vacuum tanks that withdraws liquid and reduces vacuum tank pressure;

a storage tank connected to the outlet-side of the suction pump and supplied with liquid from the vacuum tanks; and

convergent nozzles connected to the storage tank that spray storage tank liquid into each vacuum tank while maintaining reduced pressure inside the vacuum tank,

wherein liquid is degassed inside a vacuum tank, degassed liquid is stored in the storage tank, and storage tank liquid is supplied to a vacuum tank through a convergent nozzle, and

wherein the storage tank is a hermetically sealed tank provided with a reduced pressure retaining valve that discharges gas accumulated inside the storage tank.

2. The degassing apparatus as cited in claim 1 wherein a vacuum pump is connected to each vacuum tank to evacuate gas inside the vacuum tank.

3. The degassing apparatus as cited in claim 1 wherein the storage tank comprises a vacuum pump connected to forcibly discharge gas inside the storage tank through the reduced pressure retaining valve.

4. The degassing apparatus as cited in claim 1 wherein the reduced pressure retaining valve establishes minimum pressure in the reduced pressure storage tank between 0.01 MPa and 0.03 MPa.

5. The degassing apparatus as cited in claim 1 wherein the reduced pressure retaining valve is connected to the upper portion of the storage tank.

6. The degassing apparatus as cited in claim 1 wherein the degree of reduced pressure retaining valve opening is regulated during forced discharge of liquid from inside the storage tank and during vacuum pump discharge of gas from inside the storage tank to maintain a given state of reduced pressure inside the storage tank.