D module MSF test plant

DsaZktation,22(1977)151-158 OEkevkrSckntEcPuhEshing Company.

Amsterdam-_MinTheNetherlands

Vurfaus experinental data cm operathg characteristics are fm~~,000t/dnmdule HW testpbxtin&alLdinfSuFe Yorksof

ElitachiLE. EspsciaLlp in this paper the following

Item

obtained Rabcuck-

are described.

Outline of30.000 t/d moduleHSFte& plant Simulation teet result of the plant The effect of chamber geometry on brine flow stebility The effect of chamber geometry UP non-eq6Iibrfu.m allowance

s!li4BoIs

2

A2 c0 Cl c2 P G K

G&D PO 4

P2 e Yp T

5 u1

Orifice area Area between interstage plate and weir Elkiwun area between @aah plate and ueir Orifice coefficient (8re4k : Rg) Etch coefficient (zea : Al) Flaw coefficient (area : A$ 3tie flou rate per chamber width Gravity acceleration Coefficient for cU.mnsiaPleas aquatfon (5) Chmber length Non-cpu.iUbriu=r allowance (iacluding boiling Fraggare in the former stage Pressure Ln the flash box Fre6surs Fn the object stags Brkke mass flaw rate Specific gravity &tie temperature plrrabing vapor flow rate per chant&e= width Specific volume of vapor SpCSFiiC wbzEe of b&s Brine level

point

elevatf=)

geazeetry and evaporating characterist5cs for Large capacity

Clamber

0Z evaporator

Hi,& brine flaw rate and it's variotm temper&u= Vapor

velocity

various

1088

in flash chanber and the purity of distLU&e

operating

under

conditiams

The affectiveneae of dosing var%cms chemicals cleaning 6ysttnr on the FPrprovemaatof OVBC ti

The most appropriate

ageking

uith and vithsut

ball

heat tran~3fetCoeffiCi@nt

for PH control with ball

coaditfon

clea !&a effectivancu6 Venting

*em

of "On Icad cleanin&'

for large

VRrioQEB eIimz&tfon

Hajor specifict&iaa

capsity

and Wff

lead cleanin&'

of plant

tasfs of

the plant

i8 ahcw~ in Table

1.

T.&BLEf

MF Dfstlllate

Brine

Becirc.

CM@

Ferf Opkdcc

c

Kuz.&er of

Stages

Ratio

miL3,

Euw.3)

. Poly@afsphate . Lmprcwcd Chemicals . PI? Contro1 with BEtu Cle8JliR.g Ibr. &tie

Tarporature

90.6%

to 320°C

(varfed

with

'control Runbsr 'Arb8

Purity Wtjor

of Pamet Crass

h-Xc& Of

Ml3t-t8

30

ppa

Tube Arrangeetcnt a8

T.0.S

llizwzuiorr Uidth

naterfti Tubes

M=zrle

Lethod)

list & 2nd

7J35Cu-Hi

cm66 50

pp

Tube M

Arrvinent T*D.S

FIG.

!Ete following

operating .

1

flov diagram

kin

co&deration

ig paid

to enable

simuhtfon

of various

coaditioas.

The te3zperature the operatw

of COOL@

ma uater cim

Venting is possible i.azcbecade, too.

*

BalJ.clcaning circnitisprotidect.

.

The line

Dew actual

be adjusted

in relation

to

range

.

with

of plant

for

from each

10 $ partiril

chanber

load

is

ueparateljr

provided

and from any chamber

for ecorromicel operatfon

tsmpzrature of flash brine and coo&at data obtained frownsimulation operation

is shown of fotx

in Fig. 2 (4) te-erature

FegiOnS.

be The characterhtits of large capacity plant bming 24 stageskan sea uater maximum brine and inlet coola& perfectly sSm&ttsd by adjusting tcqerature ix t&e operation of test plant, Coupa.riecon

of detsfe

in K&n

Table

actual

date

Of plant perfornraQct between

C08pXiSOn shctun

artd

deeigtl

and

&&l&L

A

dssfgn

parfomanct

can be batisf~tori~

3

certified.

data

is

-

‘@HEGtl TEMP

UPE,

@J MID-HIGH TEMf? OPE. (3’J MID-LOW -rEMI? OPE. @ iwow -rEMI?

OFE.

DESIGN

155

GEoHE=pILpQpT~~~~

TEEEFFEETWCBAni3~

through stages can be obtained by inwestfgating the geocfetryeffect of the wetis and apkmh platea da orkfice coeffFcicnf. Brine orifke area can be adjusted from artside even during operatbn from open of the plant, !&a cousfructfan of flnnh boxes can he cued alsoueirs and aplaahplaeee can be typetr closed type and tice versa, easily reamed, the distur.~~s of which is adjostuble. The effect of weir and @aah plate 03 brine orffdce coetfficiant of open type flash box: is shown in Fig. 3. Brine

flow atabiUty

1 lo

0.9 O-8 -

Ffg. Tkrae

khl.8

dafZ.md

UB

of odfice

followa,

3

l3rFns 0rLffce

eoefficfunW

emB

coefficient

I5 deeidiag the gem&q end positicm of ue5r and &ash p&&es, e eqzaticn (6) the interaction of the effect of weir and splash plates ~~1b~~o~bt8b~tPcanbegca~est~ted.

Be arperitacntsl dataofnon-equilibritmalLowance includiryboiling eleration (B.P.6) B~SB investigated a.6 one of flmhhg characteristics, BperWental pammetere are brine flou rate (from Tcx, to 1050 t/h par &ssb+z width), brine taqerature (irat h-0 to 88 *Cl, b&e level In the izaahing ckudmr (from 250 to 1060 m), apd infer-stage b&e temperatwe difference
potit

The

etxzal

data are rdmun hzFig,

700

4uiEh

800

0,S.W

9uo

BRINE FLOW RATE CHAMBER WIDTH

6

PER C T/*M

data

fcm I

cl),

157

am ACTUAL * m DATA -

.

?

FIG.

ET&

5

6

T&e effect of brine flaw rate per c-r width and brine level on the non-equilibriua allodmce Geees to be Ner In canpsriaon with O.S,U data. It will be concluded that w effect of uefrs and ~pLarshplated on the efficiency of flashing prucesa ia higher irrthh experimental condition. The flesh box is open type and also the effect of presence of weir

or splash plate concluded irmvmzes

an

non-equilibliun

that rtoa-equilibria

dlouance

allavance

YEUS

investfgatcd

.

3.n fhshmg

uithout

and

St: uas

weir

by 16 % and nithout splrtshplate increaga of non-equilibriw allovame deseads an whether brine level is higher than height of veir or cot. The effect of ueFr and a-plaah plate is to increase turbtzIeaceof brine and r-or and cmaequently the increme i!zthe rate of flnP_hSnP process 5sbrought.

9.

2.

Bze

muin perfo-ce

of large

capacity

of euaporator

can be

satfefactarilg &nuIated by operatkxg this nodple WF test pIant. The effect of weir and splash #ate oa brine otifice coefficient of open type flmh bar can be abt&aed as one of the effects of chaxbcr geometry C=Lbrine ~IQU stabilitr-

158

li.L_i_ 103

m to4 VG/VL FIG.

31

Expsrimntal non-diaenaianal eguatbon of non-equilibrhn alhmance can be obt&ed end it u&8 carcluded thrttthe effect of uefrs =d splmh

1.

7

plate on non-equilibria allowance is Large,

0,S.Y Rw Report No. 389, 196%