US1401101A

US1401101A - System for removing air and gases from water

Info

Publication number: US1401101A
Application number: US386835A
Authority: US
Inventors: Raymond N Ehrhart
Original assignee: Elliott Co
Current assignee: Elliott Co
Priority date: 1920-06-05
Filing date: 1920-06-05
Publication date: 1921-12-20
Anticipated expiration: 1938-12-20

Description

H. N. EHRHAHI SYSTEM FOR REMOVING MR AND GASES mom WATER.

APPUCA'HONF\LEUlUNE5,192U.

1,40 1 1 O 1 Patented Dec. 20, 1921.

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UNITED STATES PATENT OFFECE.

RAYMOND N. EHRHART; OF PITTSIBURGH, PENNSYLVANIA, ASSIGNOR TO ELLIOTT COMPANY, OF PITTSBURGH. PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

SYSTEM FOR REMOVING AIR AND GASES I'ROM WATER.

I Application filed June 5,

To all whom it may concern:

Be it known that 1, RAYMOND NHEHR- ma'r a citizen of the United States, residing at Pittsburgh, Allegheny county, Pennsyl- Vania, have invented a new and useful Improvement in Systems for Removing Air and Gases from Water, of which the followin is a full, clear, and exact description, refinance being had to the accompanying drawings, in which 1 Figure 1 is a diagrammatic section illustrating one form of my invention, and

v Fig. 2 is a diagrammatic elevation, partly broken away, illustrating another form of m invention.

y invention has relation to apparatus for treatment of water andother liquids,

and relates generally'to means for removing air and gases from the water in the manner described and -claimed.in. a patent to William S. Elliott No. 1,321,999, dated Novem ber 18, 1919. The method described and claimed in said patent comprises a heater 'for heating the water to he treated, an

trated and, described is of the surface type.

In that system, the total withdrawal of air is made from the surface condenser, such withdrawal taking place after the feed-water has traversed through the system to, the

- evaporator.

The object of-the present invention is to provlde means of elficient character whereby a portion ofthe air may be withdrawn from the feed-water before it enters the heater,

thereby reducing the amount of air to be removed by the evaporator.

A. further object of tlie invention is to provide method and means of this character which .will opezate to simultaneously withdraw air from the Water entering the condenser and also from the steam leaving the. evaporator.

have discovered that by using an open T'- Specification of Letters Patent.

Patented Dec. 20, 1921.

1920. Serial No. assess.

type condenser of the jet or barometric form, these objects may be readily and effectively carried out.

Referring first to Fi 1 of the accompan ing drawings in which I have shown a. pre erred embodiment of my invention, the numeral 2 designates a heater of the general form described 'in said Patent No. 1,321,999, 3 the connection for supplying exhaust steam to the heater, 4 an evaporator and 5 a pump or other suitable means for Withdrawing the treated watei' from the evaporator.

6. designates a water supply pipe which delivers water into the condensing chamber of a condenser 7 of the barometric type, this condenser having its tail pipe discharging into the well or container 9 which,

in turn, discharges into the heater 2. 10

designates a pipe connection leading from the evaporating chamber of the evaporator 1 into the condenser 7; and 11 designates exhausting meansa-such as a steam egector, connected to the condensino' chamber of the condenser and 'which, as will be seen, is arranged. to act to simultaneously remove air from the water coming into the condenser by way of the pipe 6 and also fronrthe steam and vapors coming into the condenser through the pipe 10 from the evaporator.

In using this type of condenser. the distance a should he great enough to counterbalance the difference between atmospheric pressure and the pressure in the condenser. Instead of using a barometric condenser, as shown in Fig. 1, 1 may use a condenser of the low level type, such as shown at 12 in Fig. 2. In this case, it is nece ry to provide means such as a pump 13 elethe heater. The other parts shown in this figure corresponding to similar parts in Fig. l are given the same reference numerals with the letter a aflixed.

The advantages of my invention will be apparent since it will be readily seen that by removing as much air as possible from the water entering the system. the duty thrown on the evaporator is greatly reduced, inasnmch as the evaporator docs not have the same air content to deal with.

A further advantage of the in enti n con' sists in the fact that by the same operation which removes air and other dissolaahlc gases from the liquid, the temperature of the liquid is raised. This is effected with the loss of very little energy, since the exhaust steam may be used as the heating medium and a large portion of the heat losses which would otherwise be due to the drop in'temperalure in the evaporator is recovered in the condenser which acts as a heat exchanger.

It will be understood that the arrangements which I have shown are illustrative only and that the invention may be carried out in various other ways.

I claim:

1. In the treatment of liquids for heating the same and for the removal of air and gases therefrom, the method which consists in introducing the liquid to be treated into an evaporator in which a pressure is maintained lower than the pressure corresponding to the temperature of the liquid before it enters the evaporator, passing the vapors from the evaporator through a condenser, and simultaneously withdrawing air'from the liquid entering the condenser and passing therethrough to a heater, and from the steam coming from the evaporator and heating the liquid in said heater, substantially as described.

' 2. Apparatus V for treating liquids for heating the same and for the removal of air and gases therefrom, comprising a heater, an evaporator connected with the discharge of the heater,acondenser connected with the gas and vapor offtake of the evaporator, a water supply connection for the condenser, and means which act simultaneously upon the water asit enters the condenser and upon the vapors leaving the evaporator to extract air and other non-condensible gases therefrom, substantially as described.

3. Apparatus for treating liquids for heating the same and for the removal of air and gases therefrom, comprising a heater, an evaporator, a condenser connected with the evaporator to receive the gas and vapors therefrom and. through which the liquid supply for the heater and evaporator passes, and means connected to the condenser for withdrawing therefrom a portion of the air RAYMOND N. EHRHART.