DE1517214A1 - Process and device for the production of heat and turpentine during the cooking of pulp - Google Patents

Description

PatantanwiH
Olpl.-lng. W. PAAP

OfpWng.H. MITSCHERUCH Munich, September 28, 19651 5 172 U

Olpl.-lng. K. 8 UK 3 C, 1 _; .ί A It N
MUNCHEH 22, Marianninptaiz4

CURT PREDRIK ROSENBLAD, Director _ ■ _ Princeton, USA '

PROCESS AND DEVICE UNO PUR DIS PRODUCTION OF WARM AND TERPBNTIN AT ZBkLSTCPFKCGHEN

The present): · 'indung concerns the extraction of Viärme and Tex-pantin at ns -pulling of cellulose in sulfate cell = fabric factories. The invention is directed specifically to

in GevJinnung von Viärme and turpentine / VW cookers with several, cookers working in batches and in cycles, which are not are in phase with each other, the contents of the cooker become one Blown Bla3tank, its Oampfauslass with a condenser

Mixing condenser from # / ^ KW ^ # ftWfcyp fDijfolctkondensator) is connected. In described two-way implementation of the system are condensate and cooling liquid from such a

to a cistern, a so-called heat accumulator, from the upper part of which hot cooling liquid is gspurapt through ednaa heat exchanger, where the liquid is cooled and its heat is consumed. The liquid is then pumped Wi © represents zwa unto? S part of the thermal store to find again as coolant in direct condenser use. When cooking pulp according to the sulphate process in batch digesters, the end of the digester is usually around 170 ° C and the pressure is, according to normal practice

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a.

at about 7 atnospheres. Most of the turpentine oil is released during the first part of the boil through oasation from the top of the cooker. At the end of the boiling process, the pressure drops to about k or 5 atmospheres due to the chamfering of the upper part of the cooker, and the contents of the cooker are then blown into a blow tank. A smaller part of the turpentine is also released during this degassing. The upper part of the quiver is provided with gassing lines "which conduct the oasis and vapors over traps" for lye and cellulose to a condenser. At the beginning of the bubble there is still turpentine The degree of turpentine recovery is lower than theoretically possible in an ordinary system, and the turpentine obtained is contaminated to a certain extent by small amounts of black liquor and cellulose.

According to the present invention, a larger Amount of heat obtained from the "asunga and blowing steam" and the Turpentine yield is higher than is possible with known systems was "The heat obtained is contained at a higher temperature" and the turpentine obtained is considerably purer. These Nan achieves results with a condensing system »consisting of a direct condenser» a heat storage medium of the hot condensate of the cooling liquid heated in the direct condenser »which is continuously passed through a heat exchanger where the coolant is cooled and your heat is recovered, and back to the bottom of the heat accumulator * for reuse

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old cooling liquid la direct condenser is pumped, and an indirect cooler connected in series with the direct condenser on the steam β el th · whereby the converging system · Vota steam outlet of the blow tank suti gas «bsw. Condensate outlet of the indirect cooler »consists of a closed system · and where all or essentially all oases and vapors are degassed and bubbles from the cookers are conducted to the blow tank, and where finally the amount of refrigerant in the direct condenser is regulated in a special way. FlLsungs "and BlasdHnpf e where the bulk of the Blasdampfes is condensed are conducted through the direct * capacitor from the blow tank ·. The remaining oasis and water are passed through the indirect cooler · In which the oasis is cooled and the remaining water is condensed · whereby the condensate essentially consists of a mixture of turpentine and water vapor condensate.

The amount of coolant flowing through the direct condenser is in relation to. flowing to the condenser Blasdampf quantity "regulated so that a portion of the uncondensed Blasdampf it happens · As a result, the KUhIflüssig- I

des kelt and the condensate at the outlet & έφ condensate ox · is kept at or near the boiling point. This is done according to the method using a valve installed in the coolant line, which is automatically actuated by means of an impulse from the pressure in the closed condensing system either before or after the primary condenser.

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According to the present proceedings, "may so" in part of the blown steam uncondensed by the direct condenser hlndurohfthtn, where the uncondensed * Τ · 11 of the steam In dm old the direct condenser on the 4-way steam side in a row connected indirect cooler condenses; Ä46a4n / is. To this Indirect coolers are thus residual heat as well as In Obtained turpentine in the process.

It was assumed that the turpentine would, if the Danpfe were above the coolant level in the upper part of the Wäruesptiohers along stream, from the coolant absor » be bitrt. This is not the case for Jedooh. The turpentine * that may be from the coolant during a colder Phase has been absorbed »is boiled away by the cooling liquid during each blowing * if this dta direct condenser leaves at or above the high temperature.

Bs has made it so easy the KUhI-

LIQUID SENGTH Sun direct capacitor in such a ratio

dea Dampfes sur Blasdanpfnenge su regulate »that the main part H '/ MMV

is condensed »while a smaller part goes around uncondensed» which needs the help of an automatic regulated valve happens in the coolant line, whereby the valve movements are regulated by means of an impulse from Ueberdruok in the condensing system upstream of the indirect cooler will. This overpressure can be up to about 1000 nm water column at the beginning of the bite and during the main part of the bladder aa to be kept at about 100-300 on water column »

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do dee bubbles at the end? to go down to almost atmospheric pressure " an excess of pressure on the normal implementation of the Bladder completely without any action. In certain abundance it can it may be useful to put the pressure pulse in the line before the To attach a direct capacitor "while it is favorable in other fillings" to increase the resistance in the line to the indirect capacitor by inserting a throttle plate or a similar Drosaelorganes. It is also possible «the Pressure difference on both Rare of such a throttle base the same to be used as a pressure pulse. Previous methods for Regulation of the amount of cooling liquid to the direct condenser the temperature of the condenser leaving the direct condenser was used Cooling liquid as a pulse «often together with pressure pulses in the system. These impulses were then given to one or more valves press in different combinations.

According to the present invention, the efficiency of the condenser is increased when boiling sulphate pulp, whereby more heat is recovered from the capture and blown steam and at the same time the amount of turpentine you can find in purer condition than in conventional condensing systems, is increased. The present invention thus relates to an improved method for recovering heat and turpentine from aeration and blowing steam.

The invention is described below with reference to The attached drawing is described in more detail, which of course only serves the purpose of illustration and does not represent the invention has a limiting character.

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6 1S172U

In in

Afat / atr drawing « έτάί which for glelohe details in the

The same reference numerals are used in various figures »shows Fig. 1 shows a first embodiment of the condensation Annex for the implementation of the method based on the present invention. Fig. 2 shows an assembled base of a Blowing during the emptying cycle of a cooker, the Figure shows the flow of steam and the blow pressure. Both values are the blow tent juxtaposed in minutes. Flg. 3 shows schematically a second embodiment of the condensing system for the Process according to the present invention.

Both systems generally operate in the same way for the greater part of the cycles »with the system according to Fig. 1 differs from the system according to Fig. 3 in that "

the former
that in fäktöekf the blowing steam is directed past the injection condenser during the latter part of the evacuation cycle to the indirect cooler. Because of its simplicity and hostility, the system of FIG. 3 is usually two times bigger than the system of FIG. 1.

In Fig. 1, a single digester 1 is shown "which is through a blow line to a" common for all digesters B ^ astank 2 is emptied. When reference is made below to the cooker 1, "Anyone can use it, of course." Pulp mill digesters are meant, which may be one or more digesters.

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The digester 1 has an upper neck 5 of the digester through a lid 6 is closed. Sine fiasungsleltung 7 runs so from the Kooherhals 5 # that sic & in the upper part of the Koohers collecting oasis through it. Am aasungsventll 8 in line 7 regulates the Duron flow through this line » which continues to a wasungsleitung 9 common to all stoves. The line 9 is connected to the upper part 12 of the blow tank / on which a safety valve 17 is located.

In the embodiment shown, a steam line leads 20 from the upper part 12 of the blow tank 2 directly into the upper one Room 33 in the heat accumulator 23, on its upper part «in direct connection A direct capacitor 22 is attached to the space 33. eooaee-eqe be "generally of the type dejrjrte ^ - difge8tellt and In

der AraerikanischjBi ^ FftteTiischrlft (patent application

With him is coolant inserted into the top of the condenser 22 through a pipe 25 and as they flow down through umbrellas and direction-changing ones Organs * distributed as shown at 27 «28 * 29 * 30 and 3I *. These organs are only shown for public inspection are * may vary in number and type. Matters -However * that the direct capacitor £ 2 has sufficient capacity for the condensation of the blowing steam, the duroh has the pipe is fed to space 33 in the store at 89.

The heat accumulator 23 consists of a container for both hot and cooled liquid - sleeve in its Upper part and cooled jη lower part - what by a below

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described circulation system is effected.

This circulation system consists of one close to the upper one Liquid level in the heat accumulator arranged liquid outlet 35 "which is connected to a pipe 36" by the hot liquid from the top of the heat accumulator »23 by means of a pump 39 is pumped through an indirect heat exchanger (not shown) in which the heat in the liquid e.g. used for heating the production water »after which the liquid is cooled through the pipe 41 is pumped back to the bottom of the heat accumulator «.

It is desirable to keep the liquid level in the heat accumulator 23 approximately as high as the line KB shows. In the embodiment shown, this is effected by a drain valve 72 which is actuated by an element 73 which is described below and which responds to the liquid level.

The condensing system shown also includes a indirect cooler 56 "whose capacity is large enough" in Direct condenser, non-condensed blowing steam and uncondensable oasis "which are passed through the pipe 20" to utilize. Turpentine formed by condensation of oases in such a mixture passes through pipe 57 from the indirect

Cooler from «while the remaining, non-condensable part of a

the
such a mixture of Qas. can exit through / ventilation pipe 58. The indirect cooler 56 is abundantly provided with cooling water through a pipe 59. The cooling water from the indirect cooler 56 is passed through a pipe 47 and can either be used as shown

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Bottom of the heat storage unit 23 passed or as a pre-heating »e Manufacturing water can be used.

As already stated, the indirect cooler 56 during the first part of the blowing »Dumpfe vom Quiver 1 and uncondensable oasis from the vapor space in the heat storage and / or Direct condenser 22 supplied. As soon as the pressure in the top of the WSrmespei oners falls to a predetermined value » However, the indirect cooler 56 from the direct connection with the vapor space in the heat storage 23 and / or direct condenser shut off and then flushed directly from the steam pipe 20 with remaining blowing steam »with vapors and uncondensable oases. In the system shown, this is done automatically as follows described way.

The end 89 of the steam pipe 20 in the heat accumulator 23 is

provided with a non-return valve 90 * that remains open for as long »

yiid the pressure of the steam in space 33 and in the direct condenser exceeds the predetermined desired value and this closes automatically as soon as this pressure falls below the specified value. A bypass line 55 connects the line upstream of the valve 90 to the inlet port of the indirect cooler 56. A line 62 connects the line 55 to the direct condenser 22. If the direct condenser in Pig. Instead of this (as in FIG. 3), the line 62 should be connected to the upper part 33 of the storage tank 23. In line 55, between line 20 and line 62 «is selectively operated.

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ended shut-off valve 60 arranged. In the line 62 sits a valve 61 which can be operated selectively for setting in the closed or "open" position. In the "open" position, it works as a pressure-sensitive release valve to allow the passage of the oasis from the direct condenser 22 to the line 55 when the pressure of this oasis exceeds the predetermined pressure value for which the valve 61 is set ». The valve 61 can be set, for example, in such a way that, in its "open" position, oases from the condenser 22 pass at a pressure of 0.35 kp / cm excess pressure and above. The heat storage tank 2J> can also be equipped with a safety valve. With the assumed ratio "that the pressure 0.35 kp / cm in the steam chamber 33 is maintained in the heat accumulator", the safety valve 71 can be set, for example, "so that it opens at a pressure of 0.50 kp / cm overpressure.

In the condensing system shown, condenser 22 cooling liquid is carried out in the same way as it is

in the American patent specification (patent application

cooled liquid is pumped from a Sinlasa 84 at the bottom of the heat accumulator 23 by means of a high-capacity pump 82 through the pipe 25 to the upper part of the direct condenser 22. Between the pipe and the lower part of the heat accumulator 25, a diversion pipe 85 is attached, in which a selectively operating shut-off valve 86 is seated. The inlet opening of the condenser 22 is wtaefttlloh higher than the Puape 82. With the valve completely open

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86 no · cooling liquid flows through the pipe 25 * the liquid level la tube 25 is however due to the pressure from the pump 82 held insignificantly below the top of the tube. However, when reading the bottom of the valve fabric 86, the pump 82 delivers Immediately full flume tightness directly to the lath opening of the capacitor 22. Ss can also have other arrangements for the Regulation of the Ktthlf lttsslgkeltsstrones sun capacitor 22 for However, the arrangement shown here is due to the application the speed, based on that of the coolant liquid Direct capacitor 22 can be adapted to the suggested amount of drainage »particularly suitable.

The liquid level in heat storage tank 2? is in essentially kept constant »see B. at line 48. The drain valve located on the lower part of the heat exchanger 23 is regulated, for example, by a sole proprietorship 73. The coolant is directed to an equalization tank 74 from which it flows to a pump 77, for example Heat exchanger 73 can be pumped and its heat on pure manufacturing water gives off »that the heat exchanger fed through a line 79 and as heated »water through a line 80 is delivered.

The condensing system can isolate the organs Bring Prlsohdanpf directly into the room 33 « when the pressure in this space falls below the predetermined desired value. These organs can be drawn from a steam pipe 87 exist, the nlt a (not shown) steam generator

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connected «with a pressure-regulated shut-off valve 88 im Tube 87 is attached. The valve 88 is of a conventional type and is arranged to be used for the supply of steam to the room opens when the pressure in this space falls below the specified predetermined value.

As can be seen from the following, the control of the valve 60 is carried out by the check valve 90, e.g. »with help an electrical contact on this valve in a control loop « which is shown schematically at 66 and connected to the valve 60

^ 1st. The coolant flow to the direct condenser 22 is fbfeftfalla preferably regulated automatically. This can be done using “A throttle face 63 in line 55 between the line and the indirect cooler 56 happen. The pressure difference on both sides depending on the amount of steam flowing through the throttle plate can represent the impulse for a controller via a differential pressure cell 68, which in turn is a servomotor for the valve 86 actuated. The excess pressure in space 33 can also serve as a pulse for the controller. The valve 86 «that from Throttle type is kept in the open position »if the ·

"Pressure in the room drops to the predetermined value when the valve 90, closed and valve 60 open, the feed of cooling liquid to the condenser 22 is interrupted.

The in Flg. 1 illustrated system works on the following Before starting a blow, the whole system is inclusive dee Blastankes 2, under slight pressure, e.g. 250 mm WS. When the blow valve 4 is opened, the pressure in the cooker drops considerably quickly, as can be seen from the diagram of the pressure tent in FIG

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is. The blue pressure drops, for example, in 6.5 minutes from 7> 7 to 0.42 kp / cm ² overpressure. During this time, the valve 90 in the steam pipe 20 is open. The valve 61 can open completely or partially and function as a pressure regulating element in order to keep the pressure in the heat accumulator and condenser 22 at the predetermined value, for example 0.42 kp / cm overpressure.

When the pressure in the blow tank "falls" to the predetermined value, eg 0.42 kp / cm excess pressure, the check valve 90 and the control valve 6l close automatically. Simultaneously with the closing of the valve 90, the valve 60 opens, whereby the remaining blowing steam flows through the pipe 55 directly to the indirect cooler. The space 33 in the memory 23 and in the direct condenser 22 are consequently shut off from the blow tank. The blowing steam only steams and does not flow with condensation

bare oasis » oaddi & ti through the throttle shell 63. The

Differential pressure-differential pressure through the / cell 68 is here a pulse Opening the valve 86 in the coolant line, whereby the supply of cooling liquid to the condenser 22 ceases.

To get a clearer picture of the real savings » men effected by the system and method of the invention normal values for a kraft pulp of 400 t / day, which cooks 40 times a day »should be taken as a basis. Assume »that with one) bubbles, for example, 600 moal per ton Pulp removal »is 1000 meals per hour for recovery available. The peak load during blowing can be, for example, 1820 kg of steam per minute. The one to be heated Water is normal in the surface condenser

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Bindampfung eg preheated to 4O ⁰ C. When the water is used as production water, this water is heated to a minimum of 70 ^° C. or a maximum of 80 ^° C. In the latter case, the water is used in a bleaching plant.

When comparing a pressure system according to the present invention and a useful heat recovery system, it is assumed that the main parts in the systems are the same and that the volume of the heat accumulator is sufficient to utilize the heat from one bubble with a 50 % margin. Further, it is assumed that in both cases the cooled coolant in the heat accumulator in a heat exchanger to 75 ⁰ C and ansohliessend to the lower part of the heat is ruckgefUhrt Save.

In conventional Kondensieranlagen the average · is the temperature of the direct contact condenser heating wine t ^ FETn cooling liquid in the upper part of the heat accumulator, however, 93 ⁰ C. In the Kondensieranlage according to the present invention, the cooling liquid heated to about 110 ⁰ C in the direct condenser and in the upper part of the heat Save on this Temperature can be maintained if this is kept at a Ueoerdruok of 0.42 kp / cm. The higher temperature of the heated cooling liquid in the heat accumulator enables significantly reduced surface areas of the heat exchangers that use the heat in the cooling liquid heated in the direct condenser, a smaller volume required for the heat accumulator and smaller pumps, pipes and lines for supplying cooling liquid to the direct condenser. It is possible to keep the coolant in the upper

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keep the heat exchanger at a high temperature la substantial constant pressure in the Speloher * regardless of Fluctuations in blowing steam pressure, and therefore continuous Heating e.g. of the production water to high and essentially To maintain a constant temperature by the fact that the pressure during the pressure from 0 * 42 kp / en overpressure to atmospheric Vapors released under pressure can be fed directly to the indirect cooler. This indirect cooler is enough large for the advance warning of fresh water on a temperature its «which is satisfactory for use as manufacturing water

an e

1st. The indirect cooler must also have a sufficient heat surface for cooling the turpentine condensate system. The la heat storage amount of heat recovered is reduced by the tfKraemenge "which is obtained in the indirect cooler" the temperature of the heated in direct condenser cooling liquid 1st However, in the described Kondensieranlage holier than usual Kondensieranlagen and can vary from 110 to 100 ⁰ C.

Xn of the Pig condensing system. 3 are the parts » which are the same as in FIG. 1 are "provided with corresponding reference numerals" as they were used in FIG. Be therefore sufficient »the differences in construction and Specify the mode of operation between the condensing system according to FIG. 3 and FIG. 1. The upper part of the blow tank 1st through a steam line 20 in both cases with the direct condenser storage tied together. The in Flg. 1 shown direct condenser is of the countercurrent type. The outlet end of the

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In this case, line 20 is connected to the vapor space in the upper end of the heat accumulator. The direct condenser according to FIG. 3 is of the co-current type "the pipe 20 therefore leads directly to the condenser 11. For the method according to the invention it is unimportant" whether the steam is in countercurrent to the cooling liquid, as in the direct condenser in FIG. 1 * or in the same direction like the coolant »as with the direct condenser in Flg. J>, is directed. The heat storage 2} in Flg. 3 is shown provided with an overflow pipe 49 "which extends from the lower part of the heat tube" upwards at the desired level of the liquid surface forms an inverted U and is connected to a common water lock 50 outside the tank. As a result, the liquid level in the heat accumulator is kept essentially on line 48.

In the condensing system according to Flg. 3 is the steam room in the upper part of the heat accumulator permanently connected to the pipe 55 to the gas inlet of the indirect cooler 56. I'm solo here indirect cooler »which is preferably of the so-called * spiral preheating type» is designed in such a way »that it comes into contact with vapors and The heat surfaces coming from the gases are sufficiently cold »to condense turpentine vapors. In the tube 55 » through which vapors and oasis are directed to indirect cooler 56 are »a throttle plate 63 is used. The one from the The amount of steam flowing through depends on the pressure difference both sides of the throttle plate can be via a differential » pressure cell form a pulse for the controller 51, the

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Servomotor for valve 86 actuated, which regulates the flow of refrigerant to the direct condenser. The flange 63 also functions to throttle the flow of steam into the gas cooler 56 for the purpose of producing a desirable additional pressure, and it is possible to use the overpressure in front of the throttle flange 63 directly as a regulator pulse. The splash 63 may optionally be located in the outlet pipe 96 from the indirect cooler. The pressure pulse can possibly originate from the steam line 20 upstream of the direct condenser. Yes, it is also possible that the indirect cooler alone represents the throttle element. The control element 51 controls the servomotor for the automatically controlled valve 86 via the line 69. This part of the system in PIg. 3 works the same way as the same part in Pig. I. When blowing a digester around the blow tank 2, steam is fed directly to the direct condenser 11 through the pipe 20. The control system 6> 52 * 67 * 51, 69 »86 adjusts the amount of cooling liquid for Direktkondensator- 11 proportional to the Blasdampfmenge, which is the Direktkondonsator 2ugefUhi ⁱ t. When the supply of blowing steam to the Diroll condenser stops, the supply of cooling liquid to it is interrupted.

The indirect cooler 56 is cooling water through a Tube 8l supplied »into which a valve 9I is inserted. The valve 91 is under the control of a temperature activated controller (not shown), whereby the temperature of the outgoing cooling water through the pipe 92 for the purpose of application e.g. is kept constant as Pabrikafcionwasser. Uncondensed Gates go from the indirect cooler 56 through a pipe 96

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and the condensate, which contains condensed turpentine, is discharged from the cooler through a pipe 9k which leads to a further cooler 96. This cooler gets cooling water through a. Bohr 97 supplied. The cooling water is discharged through a pipe 98. The cooled turpentine is passed through a pipe 99 to a decanting device 100, from where it is drawn off in the usual way through drainage lines 101, 102 and 103

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Claims (1)

Patent claims. 1. Procedure in oasis and blowing pulp boiling for the extraction of turpentine and the recovery of heat in a condensing system consisting of a blow tank, to which the cookers blow »a direct condenser * the blowing steam from the blow tank and cooling liquid for condensing under the of the steam MAJtia heating vW coolant to high to be fed to the temperature, a heat storage / ia recording the heated mixture of cooling liquid and condensate, as well as an indirect cooler, which at least during the Main part of the blowing tent / on the steam side (with the direct » capacitors connected in series 1st »characterized by» draws that both the blowing fumes as well at least the the main part 7 of the vapors and gases released at the oases of Blastank ijk condensing systema are supplied from the inlet « until Let the blow tank 7 be kept closed to the outlet of the indirect cooler, and that one ^ part of the blowing vapors and the vapors and gases released during the gassing flow uncondensed through the direct condenser, if this is connected in series with the indirect cooler, in order to get into the one with a separate condensate drain provided indirect cooler is condensed ηΐη & geicühit zn . 9 0 9 8 2 2/0803 BAD 1517274 ** ' 2. The method according to claim 1 »thereby kermsel paves» that the oasis and vapors during the goose blowing »oasis and degassing through the direct condenser and the with him in Indirect cooler connected in series. The method according to claim 1 »characterized in that the direct condenser is kept next to« when the pressure in the line from the blow tank falls to a predetermined lower value »and opens again» when the pressure rises above this lower value. 4. Method naoh one of claims 1-2 »daduroh marked that the KUhIflttsslgkelteetrom sum direct capacitor The closer to the pressure fluctuations in the steam room of the heat accumulator and / or in the steam-absorbing space of the Direct capacitor is regulated. 5. The method according to any one of claims 1-4, characterized * that the flow of residual oasis and vapors through the indirect cooler, an overpressure is created is throttled in the heat storage tank. 6. Apparatus for performing the method according to claim 1 «consisting of a blow tank for receiving the blowing of pulp digesters, a direct condenser in Connection to the blow tank for taking up blow steam from the blow tank »Arrangements for the supply of cooling liquid to the direct condenser for the purpose of condensing at least the main part of the vapor and heating the cooling liquid to a high temperature »a heat accumulator for the BATH ORIGffiAL 809822/0803 1517214 would decrease the heated mixture of cooling liquid and condensate » and an indirect kahler who, at least during the main Telles the blowing time with the direct capacitor ^ heat storage is connected in series, characterized in that the (2) to (56) System vom BlastanS & t) ^ '^ sum indirect cooler / closed a
is »and that the indirect cooling external condensate drain (57) 7. Apparatus according to claim 6, characterized in that » (5.61
that the indirect cooler / DHW is switched in such a way that the (22)
r / ni Direct capacitor / can be included. 8. Apparatus according to claim 7 »characterized in that (60) the that regulating organs77Jr7selektlve secondary circuit of the direct capacitor are arranged. $. Device according to claim 8, characterized in * (6iT (iT
that regulating elements are arranged that regulate the pressure in the vapor space (23 )
of the heat accumulator / hold essentially constant «if the 122) Direct capacitor / connected 1st. 10. The device according to claim 9 »characterized * that the Hegel organ has a valve (88) to keep the pressure constant for injecting live steam into the steam space of the 123)
VJärmespeiohers / actuated. 909822./0803 Blank page