US1552534A - Multiple-effect evaporating apparatus - Google Patents

Description

Sept 8, 1925. 1,552,534

P. A. BANCEL MULTIPLE EFFECT EVAPORATING APPARATUS Filed June 8 19-33 INVENTOR Pau-ZA. B-ancel W i Y Patented Sept. 8, 1925.

UNITED STATES PAUL A. RANGE, OF N UTLEY, NEW JERSEY, ASSIGNO'R TO INGERSOLL-RAND COM- 1,552,534 PATENT OFFICE.

PANY, OF JERSEY CITY, NEW JERSEY, -A CORPORATION OF NEW JERSEY.

MULTIPLE-EFFECT nvaroaa'rmo arrana'rus.

Application 111611 June 8, 1923. Serial No. 644,130.

To'all whom it may concern: 0

Be it known that 1, PAUL A. BANeEL, a citizen of the United States, a resident of Nutley, county of Essex, and State of New Jersey, have invented a certain Multi le-Effeet Evaporating Apparatus, of which the following is a specification, accompanied by drawings: ,7 4

This invention relates to evaporating apparatus, but more particularly to multiple efi'ectapparatus, suitable for use in the sugar industry in evaporating sugar syrup, but also applicable to the evaporation of other liquids as desired.

The object of the invention is to enable multiple efieet evaporating apparatus to be more economically used with a main condenser and intercooler or intercondenser, and with an evacuator connected to the intercooler, capable of producing a vacuum appreciably higher than the steam pressure in the last or final efleet of the series, in order to cause flow of air and non-condensable gases or vapors from the said final efi'ect to the intercooler.

By venting the steam box of the last or final efieet of the evaporating apparatus to the intercooler, instead of to the main condenser, the primary steam jets and the main condenser itself are relieved of this air and vapor leakage, so that a smaller vacuum pumpmay be used for evacuation.

The invention is shown in one of its preferred forms in the accompanying draw ings, in which' Figure 1 is a diagrammatic side elevation of multiple eifeet evaporatingapparatus embodying the invention, and

Figure 2 is an enlarged detail vertical sectional view taken through the intercooler.

Referring to the drawings, a plurality of steam heated evaporators A are connected in series with each other, by connecting the steam and vapor outlet pipe B of each evaporator or efiect to the steam inlet C of the steam box G of the next adjacent evaporator or effect. Steam for heating purposes is supplied at the steam inlet D of the first steam box G, from any suitable source, (not shown), and a main condenser, in this instance a barometric condenser E is connected to the outlet pipe F from the evaporating chamber of the last effect. The evaporators A may be of any suitable or standard construction in which the evaporating chamber may be divided by the heating chamber into the usual upper and lower liquid containing chambers connected by circulating tubes which pass through the heating chamber but this internal well known construction is not shown for the sake of simplicity. The syrup is heated in the lower liquid-containing compartments or chambers, and the sugar is withdrawn from these chambers at the bottom outlets H. The main discharge outlets from the steam boxes G may be connected in any suitable or usual manner (not. v shown) to evacuating apparatus.

The barometric condenser E may be of standard construction; An intercooler J which may be like that, disclosed in my Patent'No. 1,526,040, February 10,1925, for steam jet condenser pump, is connected to themain condenser by the pipe K and primary aug'menter jets L supplied with steamfrom the supply pipeO, compress air and gases from the main condenser and discharge into the intercooler at low vacuum. The intercooler is supplied with water by the pipe P connected to the water supplyand rimary steam ets L of this air leakage.

In t e present instance, the vents W are.

located at the lower portions of the evaporators A, in the steam belts or boxes G forming the heating chambers or compartments, and the pipes X from each auxiliary vent are conveniently connected to the common vent pipe Y which is' connected to the intercooler at ,Z. Air and non-condensable ases and vapors from the steam boxes or lts pass oil? through the auxiliary vent pipes X and Y to the'intereooler J. The evacuating apparatus comprising the primary jets L and the secondary jets R and vacuum pump S should be capable of producing a vacuum'appreciably higher than the vacuum in the last or final evaporator or efi'ect A nearest to the main condenser E in the series,

in order to cause flow of the air and noncondensable gases or vapors from the steam box of the said last effect to the intercooler.

' evaporators connected in series and having steam boxes, in combination with a maincondenser connected next in series with the evaporating chamber of the finalevaporator or effect, an intercooler connected next 'in series to the main condenser and means for venting non-condensable ases from the steam box of the said last e ect directly into the said intercooler, thereby causing a flow of air and non-condensable gases or va ors from the steam box of the said last e ect into the intercooler, and an evacuator connected to the intercooler.

2. Multiple effect eva rating apparatus, comprising a plurality ofgteam heated evaporators connected in series and having steam boxes, in combination" with a main condenser for said apparatus connected next in series-with the evaporating chamber of the final evaporator or efiect and having an intercooler connected next in series thereto and an evacuator connected next in series after the intercooler capable of producing a vacuum appreciably higher than the steam pressure in the final efi'ect of the series, and means for venting non-condensable gases from the steam box of the said last effect directly into the intercooler, thereby causing 'a flow of air and non-condensable gases or vapors from the steam box of the said last efi'ect into the intercooler.

3. -Multiple efiect evaporating apparatuscomprising a plurality of steam heated evaporators connected in series and having steam boxes, in combination'with a main condenser for said apparatus connected next 1n series with the evaporating chamber of the final evaporator or effect and having. an intercooler connected next in series thereto and an evacuator connected next in series after the intercooler capable of producing a vacuum appreciably higher than the steam pressure in the final efi'ect of the series, and a pipe for venting non-condensable gases connecting the steam box of the saidlast effect directly with the intercooler, thereby causing the How of air and non-condensable gases or vapors'fromthe steam box of the said last effect into the intercooler.

4.,Multiple effect evaporating apparatus, comprising a plurality of steam heated 'evaporators connected in series and having steam boxes, 1n combination wlth a maln condenser for said apparatus connected next .in series with the evaporating chamber of the final evaporator or effect and having an intercooler connected next in series thereto and an evacuator connected next in series after the intercooler capable of producing a vacuum appreciabl higher than the steam pressurein the finale-fleet of the series, vent pipes for venting non-condensable. gases fromlthe steam boxes of the efl'ects connected to a common vent pipe, and means connecting the saidcommon vent pipe directly to the said intercooler.

In testimony whereof I have signed this specification.

PAUL A. BANCEL.

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