WO2009122563A1

WO2009122563A1 - Deaerator apparatus and method of deaeration

Info

Publication number: WO2009122563A1
Application number: PCT/JP2008/056468
Authority: WO
Inventors: 茂坂下; 旬一相沢; 勉川崎
Original assignee: 株式会社前川製作所
Priority date: 2008-04-01
Filing date: 2008-04-01
Publication date: 2009-10-08
Also published as: JPWO2009122563A1; JP5246888B2

Abstract

A deaerator apparatus, and a method of deaeration, with which without the use of any gas, such as carbon dioxide gas, dissolved oxygen and other gases detrimental to the quality thereof are removed from treated water for use in the production of beverage, such as beer or soft drink. The deaerator apparatus is one including treated water supply means (5) for supplying pressurized treated water to deaeration tank (3) for performing deaeration operation and heat exchanger (heating means) (14) for heating the treated water, characterized in that not only is the treated water heated by the heating means (14) into superheated water of 100°C or higher and flushed through a spray nozzle into the deaeration tank (3) but also part of the flush is returned, by the suction force of ejector (33) disposed along steam supply channel (32) for supplying pressurized steam of heating source to the heating means (14), to the steam supply channel (32) so that the same can be reused as a heating source of the heating means (14).

Description

Deaeration device and method

The present invention relates to a degassing apparatus and a degassing method for degassing dissolved oxygen and other gases that adversely affect quality from treated water used for producing beer and soft drinks.

In the production of beer and soft drinks, deaeration devices are used to degas dissolved oxygen and other gases that adversely affect quality from treated water.
For example, as shown in FIG. 2, carbon dioxide gas 03 is supplied into the cylindrical degassing tank 01 from the lower side of the tank 01 to make the inside of the tank 01 rich in carbon dioxide gas, and the treated water heated to about 80 ° C. is tanked. By spraying water from the top of the nozzle 01 with the injection nozzle 05, carbon dioxide dissolves in the treated water using the fact that carbon dioxide has a higher solubility in water than oxygen and nitrogen, and treats gases that adversely affect oxygen and other quality The water was degassed, the treated water was purified, and taken out from the drainage passage 07 at the bottom of the tank 01. And the carbon dioxide gas was further mixed in the deaeration treated water, carbonated water was manufactured, and it was used for manufacture of beer and soft drinks.

In recent years, in beer production, wort concentration is generally about 11% by weight, fermented with high concentration wort of about 18%, and then diluted with carbonated water to the desired concentration So-called high-concentration brewed beer is known.
Compared with equipment that is fermented from the beginning at a low concentration, high-concentration fermentation is used as a method that can be produced at low cost because the equipment scale can be reduced.
As described above, as a method for producing carbonated water for diluting beer brewed with this high-concentration wort, produced by mixing carbon dioxide with degassed water from which oxygen and other gases that adversely affect quality are degassed. Carbonated water is used.

On the other hand, Japanese Patent Application Laid-Open No. H8-318138 (Patent Document 1) has been proposed as a deaeration device for treated water used in the production of beer and soft drinks.
As shown in FIG. 3, the deaeration apparatus shown in Patent Document 1 includes a gas blowing device 012 for blowing carbon dioxide gas or nitrogen gas into the treated water flowing through the treated water supply pipe 010 so as to be in a fine bubble state. The treated water containing fine bubbles supplied from the treated water supply pipe 010 into the upper part of the tank 014 is caused to flow down toward the lower part of the tank 014 while swirling through the spiral water channel 013 and to the lower part of the tank 014. Air / oxygen bubbles and gas that adversely affect quality while passing through the provided porous hollow fiber membrane unit 016 are sucked by the vacuum pump 018 and degassed from the treated water. A configuration for discharging the deaerated treated water from the drainage passage 020 is shown.
Japanese Patent Application Laid-Open No. 2005-224676 (Patent Document 2) discloses a technique for degassing by ejecting steam extracted from a steam turbine, not a soft drink, into a degassing tank from a spray nozzle. Yes.
JP-A-8-318138 JP 2005-224676 A

However, in each of the conventional technique shown in FIG. 2 and the technique shown in Patent Document 1, carbon dioxide gas or the like is supplied to replace oxygen in the water and the like, and the degassing is performed. Requires a carbon dioxide gas to be supplied in order to make the inside of the tank a carbon dioxide gas atmosphere, and in the deaeration device shown in Patent Document 1, carbon dioxide is directly added to the treated water so as to be in a fine bubble state. Since gas or nitrogen gas is supplied, carbon dioxide gas or nitrogen gas for degassing is required, and there is a problem that the cost of gas consumption increases.
Furthermore, in the system shown in FIG. 2, since the treated water needs to be heated to about 80 ° C., it is necessary to improve the heating efficiency and reduce the running cost of the deaerator system as much as possible.
In addition, as in Patent Document 2, a technique for deaeration by spraying spray from a spray nozzle into a deaeration tank is generally known. Need to generate well.

Therefore, the present invention has been made in view of such a background, and is suitable for degassing of treated water of beer and soft drinks, and can be degassed without using a gas such as carbon dioxide gas. It is an object of the present invention to provide a deaeration device and a deaeration method capable of efficiently generating the treated water and reducing the running cost.

In order to solve the above-mentioned problems, an invention relating to a deaeration device is provided in which a deaeration process is performed in a deaeration device that degassed dissolved oxygen and other gases from treated water used in the production of beer and soft drinks. Treated water supply means for supplying pressurized treated water to the air tank; heating means for heating the treated water with steam; and superheated water heated to 100 ° C. or higher heated by the heating means is flushed into the deaeration tank. A part of flush water of high-temperature superheated water ejected from the spray nozzle into a degassing tank, comprising a spray nozzle and an ejector installed in a steam supply path for supplying pressurized steam as a heating source to the heating means Is returned to the steam supply path upstream of the heating means by the suction force generated by the ejector.

Further, the invention relating to the deaeration method is supplied to a deaeration tank in which a deaeration process is performed in a deaeration method in which dissolved oxygen and other gases are deaerated from treated water used for producing beer and soft drinks. The treated water is heated to 100 ° C. or more by heating means, and the degassing treatment is performed by flushing the superheated water into the degassing tank through the spray nozzle, and a part of the flushed superheated water is It is sucked by a suction force generated by an ejector installed in a steam supply path for supplying pressurized steam of a heating source to the heating means, returned to the steam supply path, and reused as a heating source for the heating means. To do.

According to the invention of the deaeration device and the deaeration method, the treated water is heated by the heating means to be heated to 100 ° C. or higher superheated water, and the superheated water is injected from the injection nozzle into the deaeration tank to be flushed. Therefore, since it is superheated water, it is easy to release oxygen, and it is flushed and changed from liquid-phase treated water to gas-phase treated water, so that oxygen and other gases are easily released and a deaeration action is performed. Is called.

Furthermore, since it is superheated water exceeding 100 degreeC, the sterilization effect for a short time by high temperature can be acquired, and more effective sterilization effect is obtained in a short time compared with the process at the conventional about 80 degreeC.
Further, since the deaeration process can be performed without using carbon dioxide gas, the use of carbon dioxide gas can be saved, and the equipment maintenance cost can be reduced.

Furthermore, an ejector is installed in the steam supply path to the heating means, and a part of the flash water of high-temperature superheated water ejected from the injection nozzle is placed in the steam supply path upstream of the heating means by the suction force generated by the ejector. Since it was constituted so that it may return, the heat of flushed superheated water can be reused and the heating efficiency of treated water can be improved.
In addition, since a part of the flash water of the high-temperature superheated water is returned to the steam supply path upstream of the heating means by the suction force generated by the ejector, the steam on the heating means side flows to the treated water side and is heated by the steam for heating. The treated water is not contaminated.

Preferably, in the invention of the degassing apparatus and degassing method, a preheating means is provided in the treated water inflow passage to the heating means, and the treated water to the heating means is treated by the degassed treated water after the degassing treatment. Is preferably heated.
According to this invention, the pretreated water can be preheated using the degassed treated water after the degassed treatment by the preliminary heat exchanger, and at the same time the degassed treated water can be precooled. The heating efficiency and the cooling efficiency of the degassed water can be improved.

Preferably, in the invention of the degassing apparatus, the treated water is heated by the heating means to superheated water in a range of approximately 103 to 108 ° C., and this temperature range is a high-temperature sterilizing effect and a heating means facility. This is an appropriate range in view of the increase in size.
That is, if the temperature is high, the sterilization effect and the deaeration action can be obtained. However, in order to generate superheated water exceeding 100 ° C., the pressurizing capacity in the treated water supply means and the heating capacity in the heating means must be increased. However, since the size of the equipment is increased, the range of approximately 103 to 108 ° C. is sterilized within a few seconds when the superheated water is processed in the degassing tank while the size of the heating equipment is suppressed. This is a range of superheat suitable for taking care of.
Therefore, deaeration treatment and sterilization from the treated water can be performed without increasing the size of the equipment and without using carbon dioxide gas.

According to the present invention, without using a gas such as carbon dioxide gas, it is possible to degas dissolved oxygen and other gases adversely affecting the quality from the treated water used for the production of beer and soft drinks, A high-temperature superheated water used for degassing can be obtained efficiently, and a degassing apparatus and a degassing method that can reduce running costs can be provided.
Moreover, since the deaeration process is performed with superheated water of 100 ° C. or higher, the high-temperature sterilization effect of the treated water is exhibited in a short time, and the treated water can be sterilized with certainty.

It is a schematic whole block diagram which applied the deaeration device concerning the present invention to a beer manufacturing process. It is a block diagram explaining the conventional deaeration apparatus. It is a block diagram explaining the conventional deaeration apparatus.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified, but are merely illustrative examples. Only.

FIG. 1 is a schematic overall configuration diagram in which the deaeration apparatus according to the present invention is applied to a beer production process.
As shown in FIG. 1, a deaeration device 1 for degassing dissolved oxygen and other gases from treated water includes a cylindrical hollow-shaped deaeration tank 3 in which a deaeration process is performed, and the deaeration tank 3 is pressurized. A treated water supply means 5 for supplying treated water is provided.
This treated water supply means 5 raises the treated water to a predetermined pressure by a pressure pump (not shown), adjusts the pressure and flow rate via the open /

close control valves

7, 8 and the pressure regulating valve 10, thereby preparing a preliminary heat exchanger (preliminary heating). Means) 12 and heat exchanger (heating means) 14 are supplied with treated water.

In the preliminary heat exchanger 12, heat treatment is performed between the treated water and the degassed treated water by flowing the treated water and the degassed treated water so that the treated water is heated by the degassed treated water. At the same time, the degassed treated water is cooled by the treated water.
The treated water that has been preheated by the preliminary heat exchanger 12 and then flowed into the heat exchanger 14 is heat-exchanged with the steam supplied from the steam supply device 18 by the heat exchanger 14 and is overheated at approximately 103 ° C. to 108 ° C. The temperature is raised to water.

The superheated water heated to about 103 ° C. to 108 ° C. is guided to the injection nozzle 22 attached to the upper part of the deaeration tank 3 through the injection passage 20 and is flushed into the deaeration tank 3 therefrom. . By being flushed, the treated water changes to a mixed state of the liquid phase and the gas phase in the vapor state, and the rate of change from the liquid phase to the gas phase increases, so oxygen and other gases are easily released. Since the temperature is higher than 100 ° C., the deaeration action is performed because oxygen is easily evaporated and released.

Furthermore, since it is superheated water of 100 ° C. or more simultaneously with the deaeration action, the high-temperature sterilization effect is exhibited, and the treated water is sprayed from the upper part of the deaeration tank 3 and collected in the lower part within a few seconds Sterilization can be performed reliably.

Then, the deaerated treated water discharged from the lower part of the deaerated tank 3 through the discharge passage 24 flows into the preliminary heat exchanger 12 through the pump 26 and exchanges heat with the treated water as described above. The degassed treated water is precooled by the treated water and guided to the deaerated treated water cooler 28 in the next cooling step. In this way, the preheated water can be preheated using the degassed water after the deaeration treatment by the preliminary heat exchanger 12, and at the same time, the degassed water can be precooled. Efficiency and cooling efficiency of deaerated treated water are improved.

In the steam supply device 18, the pressure and flow rate of pressurized steam generated at about 120 ° C. generated by a steam generator (not shown) is adjusted by adjusting

valves

30 and 31, and further, an ejector 33 is connected to the steam supply path 32 on the downstream side. Is provided, and is piped so that pressurized steam is blown into the ejector 33 and led to the heat exchanger 14.
The pressurized steam as the heating source supplied to the heat exchanger 14 exchanges heat with the treated water supplied by the treated water supply means 5 to heat the treated water to overheated water at 100 ° C. or higher. The steam after heating the treated water is discharged from the heat exchanger 14 and then led to the condenser 37 to be condensed.

A return passage 35 is provided to communicate the throttle portion of the ejector 33 and the vicinity of the injection nozzle 22 attached to the deaeration tank 3 so that a part of the flushed superheated water is sucked back to the ejector 33. Yes.
As described above, the ejector 33 is arranged in the steam supply path 32 for heating the treated water, and a part of the flushed superheated water is sucked and returned to the steam supply path 32 by the suction action of the ejector 33. Since the heat of the flushed superheated water can be reused, the heating efficiency of the heat exchanger 14 is improved.
Further, the heat of the flushed superheated water can be reused, and a part of the flush water of the high temperature superheated water is returned to the steam supply path upstream of the heating means by the suction force generated by the ejector. The steam does not flow to the treated water side and the treated water is not contaminated by the heating steam.

Since the deaeration device 1 is configured as described above, the deaeration action can be achieved by flushing the superheated water heated to 100 ° C. or higher into the deaeration tank 3 without using carbon dioxide gas or the like. In addition, since the treatment water can be sterilized, simplification of the deaeration equipment and reduction of running cost in the beer production process can be achieved, and the sterilization effect can also be achieved.

Next, the deaerated treated water precooled by the preliminary heat exchanger 12 of the deaerator 1 is introduced into the next deaerated treated water cooler 28 and cooled. In the degassed water cooler 28, brine (glycol) generated by a cooling device (not shown) is circulated through the brine circulation path 39, and the degassed water is cooled by the brine passing through the degassed water cooler 28. The

Regulating valves 40 and 41 are installed on the brine inflow side of the deaerated treated water cooler 28, the inflow pressure is adjusted by the regulating valve 40, and the regulating valve 41 removes the water based on the outlet temperature of the deaerated treated water cooler 28. The flow rate of brine flowing into the gas treated water cooler 28 is controlled. Further, a circulation pump 43 for the deaeration treated water cooler 28 is provided between the inflow side and the outflow side of the deaeration treated water cooler 28 so that the brine circulates in the deaeration treated water cooler 28. It has become.

The cooled degassed treated water is guided to the carbon dioxide mixer 45, and the degassed treated water is mixed with carbon dioxide to produce carbonated water. Since the deaerated water has already been cooled by the deaerated treated water cooler 28, the carbon dioxide gas is easily dissolved in the deaerated treated water, and high-concentrated carbonated water can be easily generated.
The carbonated water is guided to the bottom of the cylindrical carbonated water storage tank 47 and stored in the carbonated water storage tank 47.
Further, since the carbonated water storage tank 47 is supplied with brine circulated by the brine circulation path 39 and cooled by the brine, the carbonated water stored in the carbonated water storage tank 47 is in a low temperature state. Is stored and saved.

Carbonated water in the carbonated water storage tank 47 is supplied to the beer dilution unit 53 through a carbonated water supply passage 51 provided with a pump 49. On the other hand, the high-concentration fermented beer after filtration is supplied to the dilution section through the beer supply passage 55, and the carbonated water is mixed with the high-concentration fermented beer in the beer dilution section 53 as desired. It is designed to be diluted to a concentration of beer.

After carbonated water is mixed and diluted in the beer dilution section 53, the diluted beer is guided to the beer cooler 57 again to re-cool the diluted beer. Furthermore, in order to mix carbon dioxide again into the cooled beer, the carbon dioxide gas is introduced into the beer by being guided to the carbon dioxide mixer 59.
Thereafter, the diluted completed beer is supplied through a beer supply passage 60 to a temporary storage tank (not shown).

Further, the beer cooler 57 is provided with adjusting

valves

62 and 63 on the inflow side of the brine to the beer cooler 57, and the inflow pressure is adjusted by the adjusting valve 62, similarly to the degassed water cooler 28. The brine flow rate is controlled by the regulating valve 63 based on the inlet temperature flowing into the beer cooler 57.
A circulation pump 65 for the beer cooler 57 is provided between the inflow side and the outflow side of the beer cooler 57 so that the brine circulates in the beer cooler 57.

The brine circulation path 39 is configured to supply brine to each of the degassed water cooler 28, the beer cooler 57, and the carbonated water storage tank 47, and return to each other.
The carbon dioxide gas is supplied to the

carbon dioxide mixers

45 and 59 through the carbon dioxide supply passage 67 and also supplied into the carbonated water storage tank 47.

In the beer production process as described above, the deaeration treated water is purified using the deaeration device 1, and the deaeration treated water is mixed with carbon dioxide to produce carbonated water. The filtered beer is mixed with the carbonated water and diluted to produce the desired beer.

According to the present invention, without using a gas such as carbon dioxide gas, it is possible to degas dissolved oxygen and other gases adversely affecting the quality from the treated water used for the production of beer and soft drinks, A part of the heat of the superheated water flushed in the deaeration tank can be reused, and a deaeration device and a deaeration method that can reduce running costs can be provided.
Moreover, since the deaeration process is performed with superheated water at 100 ° C. or higher, the high-temperature sterilization effect of the treated water is exhibited in a short time, and the treated water can be sterilized with certainty.
Therefore, it is useful when applied to a degassing apparatus for treated water used in beer production processes and soft drink production.

Claims

In a degassing device that degassed dissolved oxygen and other gases from treated water used in the production of beer and soft drinks,
Treated water supply means for supplying pressurized treated water to a degassing tank in which deaeration treatment is performed; heating means for heating the treated water with steam; and superheated water at 100 ° C. or higher heated by the heating means. A high-temperature overheat jetted from the jet nozzle into the degassing tank, comprising a jet nozzle that flushes into the degassing tank, and an ejector installed in a steam supply path that supplies pressurized steam as a heating source to the heating means. A deaeration apparatus, wherein a part of flush water is returned to a steam supply path upstream of the heating means by a suction force generated by the ejector.
The deaeration apparatus according to claim 1, wherein a preheating means is provided in the treated water inflow passage to the heating means.
The deaeration apparatus according to claim 2, wherein in the preliminary heating means, treated water to the heating means is heated by the deaerated treated water after the deaeration treatment.
The deaerator according to claim 1, wherein the treated water is heated to superheated water in a range of approximately 103 to 108 ° C by the heating means.
In the degassing method of degassing dissolved oxygen and other gases from the treated water used for the production of beer and soft drinks,
The treated water supplied to the degassing tank to be degassed is heated to 100 ° C. or higher by heating means, and the degassed water is flushed into the degassing tank through the spray nozzle. A part of the flushed superheated water is sucked by a suction force generated by an ejector installed in a steam supply path for supplying pressurized steam of a heating source to the heating means, and returned to the steam supply path to return the heating means A degassing method, wherein the degassing method is reused as a heating source.
6. The deaeration method according to claim 5, wherein the treated water is preheated by preheating means disposed in the treated water inflow passage to the heating means.
The deaeration method according to claim 6, wherein the treated water is preheated with the deaerated treated water after the deaerated treatment.