JPS58205038A - Pressure reducing boiler - Google Patents

Abstract

PURPOSE:To heat the fluid to be heated up to high temperature by a method wherein a second heat exchanger is provided in the fluid to be heated inside a reservoir of heat medium solution enclosed in a sealed up container. CONSTITUTION:A flue group 2 for high temperature gas is inserted into a reservoir 1A of a sealed up container 1 enclosed with 55% solution of lithium bromide as a heat medium solution maintaining inside pressure not exceeding the atmospheric pressure while heat exchangers 3A, 3B flowing the fluid to be heated inside thereof are inserted into a steam chamber 3A connected to another steam chamber 1B in the sealed up container 1 constituting a heat exchanger 3. Another heat exchanger 5A is inserted into the space above the flue group 2 inside the reservoir 1A constituting the second heat exchanger 5 while the fluid to be heated different from the fluid flowing inside the heat exchangers 3A, 3B is flowing inside the heat exchanger 5A. The fluid flowing inside the heat exchanger 5A is preliminarily heated in the other heat exchanger 6A inserted into the second sealed up chamber 3A.

Description

[Detailed Description of the Invention] The present invention is characterized by: ! A reduced-pressure boiler that is equipped with a means for heating and evaporating a heat medium liquid sealed in a closed container maintained below the total atmospheric pressure, and a heat exchanger that condenses and liquefies the generated steam by indirect heat exchange with the heated fluid. Regarding.

In conventional reduced pressure boilers of this type, only a heat exchange section for heating the fluid to be heated using generated steam was provided as a heat exchange section for completely heating the fluid to be heated.
When this happens, the fluid to be heated must be controlled by the safety device! Heated stream i + VC as a heat source that cannot heat M1 above 0℃ and requires a high temperature of 20 to 7.20℃, for example, an absorption chiller heat source or a boiler feed water heating heat source. could not be used, and the scope of its use was narrow.

In view of these circumstances, the present invention aims to provide a boiler which is of a reduced pressure type and is capable of heating a fluid to be heated to a temperature of 2θ to 7.20°C. ° to do.

The reduced pressure boiler according to the present invention is characterized in that it is provided with a second heat exchange section that indirectly heats the fluid to be heated with the heating medium liquid in the liquid reservoir section in the valley closure device. According to this particular feature of the present invention, in addition to the heat exchange section that heats the fluid to be heated using Kosei steam metal, the high temperature heat medium liquid (
For example, in the case of a lyticum bromide jj% solution, it is about /JO°C. ) Since the second heat exchange section is provided to completely heat the fluid to be heated, by using the second heat exchange section,
Although it is a pressure reduction type, it can heat the fluid to be heated to a temperature of 20 to 7.20℃, and can also be used as a heat source for water heating flow 1 + total absorption refrigerators and boiler water supply. As a result, we have been able to significantly expand the scope of use.

In particular, as shown in the examples below, when heating and lowering is carried out in the second heat exchanger, which is heated with generated steam in a heat exchanger separate from the heat exchanger, the heating efficiency is the same as above. to heat the heated fluid to the product temperature.
The heat transfer area can be reduced, and the heat exchanger can be made smaller.

Hereinafter, an example of the non-invention will be explained based on Figure 1.4. Inside a closed container (1) which is kept below the total internal atmospheric pressure and filled with lyticum bromide jj% liquid as a heat transfer liquid. A group of smoke pipes (2) is installed in the liquid reservoir (LA) to completely heat and evaporate the enclosed heat medium liquid using bi-temperature gases such as combustion gas and waste gas. % 871 heat exchange section (3), which is provided with a heat exchange section (3) that allows indirect heat exchange between the boiler and the heated fluid (e.g., is 1
jfInsert the pipe (4) into the steam chamber (IB) in the sealed container 1]).
The sealed chamber (8A) communicates with the sealed silkworm (8A) through
) are equipped with heat exchangers (8B) and (8B').

Then, the liquid reservoir part (I
A) and above the smoke pipe group (2) is a heat exchanger (5A).
) so that the heating medium liquid in the liquid reservoir (1A) and the second heated stream different from the heated stream can be heard.
□111・:,, 2 pieces. Yawa, ga, □□7E2Natural Climate 岨< (51 complete configuration, FJi [self steam room (
IB), a heat exchanger (6A) is inserted in the heat exchanger (6A), and the second heated stream before being supplied to the second heat exchanger (5) is heated by the generated steam. Configure.

(7) is a chamber for storing non-condensable gas in the steam chamber (IB), (8) is a bleed pump for discharging the non-condensable gas in this chamber (7), and (1) (10) is a pressure gauge that detects and displays pressure cracks in the sealed container (1), (II) is a liquid level detection switch, (12) ld-steam chamber ( It is a melting plug that melts and communicates with the outside when the temperature inside IB) exceeds a certain level.
'a) p ('') e ('''') t ('Q is a thermistor, temperature switch, limit switch, pressure gas inch as a safety device sensor, 0η, (18)
are a thermometer and a pressure gauge that detect and display the temperature and pressure crack of the second heated fluid supplied to the second heat exchanger (5);
19) is a relief valve.

According to the above embodiment, the generated steam heats the wave-heated fluid to 13 to 0°C in both heat exchange parts +31 and +61, respectively.
Since the temperature of the heat medium can be raised to a certain degree, and the temperature of the heat medium liquid is about /JO℃, the generated steam VC can be used in a separate heat exchanger (6). The second fluid to be heated, which has been heated to about j~20°C, can be heated to −2θ~7.20°C in the second heat exchange section +51. Also, heat exchange W
(8B) It is also possible to operate without completely supplying the fluid to be heated to t(3B).

2 and 8 show all other embodiments, and the other embodiment shown in FIG.
, between the heat exchanger (5A) in the two-heat exchanger section (5), and the heat exchanger (5A) raised on the smoke pipe group (2) side.
A partition plate (20) is provided which circulates the heat transfer liquid by convection while descending on the side.Another embodiment shown in Fig. A passageway I@(2i+) is provided, and a heat exchanger (ISA) is provided in this passageway Qll to constitute a second thermal exchange!l5(51).

Non-invention may be implemented as follows.

■ A heat source such as a burner or electric heat is used as a means for heating the heat medium liquid.

The configuration is such that the second stream to be heated is heated only in the second heat exchange section (5).

07 heated fluid total heat exchange parts (3) and second heat exchange part (
5) Both heat exchange parts +
31, +5+ all connections.

In addition to CI/'i, water, oil and air can be cited as the four bodies to be heated, and the fluid to be heated is the heat exchange section (3), and the second heated lAu body is the second heat exchanger. When indirect heating is performed in each part (5), the types of heating fluids may be different, such as water for the heated stream F and oil for the second heated stream.

[Brief explanation of the drawing]

Figure 1 Ii heaven example? FIGS. 2 and 8 are schematic cross-sectional views showing largely different embodiments. il+...Airtight container, (3)...Heat exchange section, (LA)...Liquid container, (b)...
Second heat exchange section, (6)... Separate heat exchange section. 191-

Claims (1)

[Scope of Claims] ■ Means for heating and evaporating a heat transfer fluid sealed in a closed container ilJ maintained below the total internal atmospheric pressure, and a heat exchanger for condensing and liquefying the generated vapor by indirect heat exchange with the fluid to be heated. Department (
3), the second heat exchange section (5) is fully equipped, in which the fluid to be heated is heated entirely indirectly by the heat medium liquid in the liquid reservoir (IA) in the closed container 11). This is a reduced pressure boiler that is characterized by: ■ The heated fluid heated in the %2 heat exchange section (5) is in a heat exchange section (6) different from the heat exchange section (3).
The reduced pressure boiler according to claim 0, wherein the fluid is heated by the steam generated in the boiler.