CN2039383U

CN2039383U - Atmosphere-type thermodynamic oxygen remover

Info

Publication number: CN2039383U
Application number: CN 87214451
Authority: CN
Inventors: 王昨民; 王卫民
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-10-15
Filing date: 1987-10-15
Publication date: 1989-06-14

Abstract

The utility model discloses an atmosphere-type thermodynamic oxygen remover, which relates to a device for removing oxygen by a thermodynamic method. A circulation device of internal energy and a simultaneously on-off control device are arranged in the utility model; the output pressure of a steam pressure release device is converted into 0.04 mpa-0.09 mpa from 0.02 mpa. The energy consumption of the atmosphere-type thermodynamic oxygen remover can be saved by 50%; the investment cost can be saved by 60% and the utility model can be arranged on same ground with a boiler feed pump; the atmosphere-type thermodynamic oxygen remover is convenient to install, operate, and repair.

Description

Atmosphere-type thermodynamic oxygen remover

The utility model relates to a kind of energy-efficient atmospheric-type thermodynamic deoxidizing apparatus.

Contain dissolved gas O ₂, CO ₂Water directly supply with boiler or heat-exchanger rig and use, equipment is corroded, the lost of life.Thermal de-aeration is a kind of effective deoxidation method.Operation principle is according to henry's law " 1 ", with water vapour the demineralized water that enters the deoxygenation head is heated to saturation state, makes the liquid level dividing potential drop of dissolved gas be " 0 ", and gas dissolved water constantly diffuses out.The characteristic that oxygen in water is removed under thermodynamic state is referring to " 2 ".The prior art scheme is to be heated to 104C ° of deoxygenation directly is pumped into boiler or afterbody thereafter through piping economizer at 0.2 following room temperature water of gauge pressure (being generally 20C °), has following defective:

(1) level of power consumption height.When inflow temperature=20 ℃, be heated to 104 ℃ of need from outside input heat 104-20=84 kilocalorie/kilogram.Though this part heat will take in the boiler and go, but because water temperature is higher, directly advancing economizer makes its heat absorption temperature and pressure reduce the caloric receptivity minimizing greatly, exhaust gas temperature increases 40-50 ℃, cause boiler thermal output to reduce more than 1.5%, and there is boiling dangerous, (may cause security incident) to cast iron gilled tube economizer.

(2) because 104 ℃ high-temperature water is directly supplied with boiler feed pump, keep effective cavitation pressure head △ H of water pump _r" 3 " and operate as normal must be arranged in more than the water pump 7 meters to oxygen-eliminating device, cause difficulty in installation and layout thus, and investment increases, operating maintenance inconvenience.

The improved development trend of atmospheric-type thermodynamic deoxidizing device is to reduce self power consumption level; Reduce the deoxygenation water temperature; The realization low level is arranged.

The purpose of utility model is that a kind of energy-efficient atmospheric-type thermodynamic deoxidizing device will be provided, this device self steam consumption level can reduce 50% and can install in the identical position of water pump absolute altitude, reduce investment outlay, handled easily, installation, maintenance, water temperature was reduced to 65-68 ℃ and can directly be entered economizer when deaerated water left oxygen-eliminating device, boiling is not dangerous, and common water pump delivery safety is reliable.

The purpose of this utility model is achieved in that the diaphragm of steam reducing valve and spring is designed and sized to exportable 0.04-0.09MPa gauge pressure (for realizing not having the elevation difference layout and prevent air penetration with water pump), in water tank bottom deaerated water exit 1 device with internal energy circulatory function is set.This device has two runners that separate fully, and two runners are parallel to each other, the demineralized water reverse flow of deaerated water and equivalent.Soft water absorbs the heat 1/2(t of deaerated water by the wall of separating two runners _Bh-t _Gs) kilocalorie/kilogram, through the water inlet pipe group on a deoxygenation top heat that absorbs is taken back again in the oxygen-eliminating device again, only need again from outside input 1/2 (t _Bh-t _Gs) heat just reach the necessary fluidized state of deoxygenation.The deoxygenation water temperature also drops to 1/2(t _Bh+ t _Gs) ℃ enter boiler water pump again.Demineralized water and deaerated water must equivalent pass through the internal energy EGR synchronously, and this is to realize by the synchronous break-make controlling organization of a particular design, and another effect of this mechanism is to keep the high water tank weighing apparatus fixed.

For the ease of comparing with utility model, the concrete structure with prior art is provided by Fig. 1 earlier.Fig. 1 is that the layout of prior art is always schemed, and describes the details and the working condition of prior art in detail below in conjunction with Fig. 1.Deoxygenation head (1) is arranged in the top of a horizontal water tank (2), a deoxygenation top have a water inlet pipe group (3), above some atomizers (4) are arranged, the packing layer (5) that a deoxygenation bottom is made up of Raschig ring is steam inlet (6) below it.The effect of deoxygenation head is that to make temperature be t _GsDemineralized water under the big as far as possible situation of surface area, be heated to saturation state 10

4 ℃.The outside interface output pressure that steam decompressor (7) is arranged in (6) is the 0.02MPa gauge pressure; Heat is t _Bh-t _GsThe steam of kilocalorie/kilogram is given the deoxygenation head.Have a tapering pipe joint (8) to link to each other with ball-cock assembly (9) on the horizontal water tank (2), when high water tank raise, ball-cock assembly turned down intake tunnel, made liquid level keep certain limit.

The concrete structure of utility model is provided by Fig. 2, and accompanying drawing 2 is utility model General Arrangements.The structure and the effect thereof of utility model are described below in conjunction with Fig. 2.Deoxygenation head (1) is arranged in vertical water tank (a 2) top (handle the water yield less than 6 tons/hour), also can be arranged in horizontal water tank upper (handle the water yield 〉=6 ton/hour).A deoxygenation top is above the water inlet pipe group (3) plurality of nozzles (4) to be arranged, the bottom is that a packing layer (5) is that vapor interface (6), steam reducing valve (7) are arranged in the external interface place of (6) below again, to deoxygenation head output 0.04-0.09MPa gauge pressure 1/2(t _Bh-t _Gs) steam of kilocalorie/kilogram, (keeping certain operating pressure) to realizing that the Fabric that does not have an elevation difference with water pump puts and preventing that air penetration from playing an important role.The water of removing oxygen enters the deaerated water inlet (10) of internal energy EGR (9) by the deaerated water outlet (8) of water tank (2) bottom, enters synchronous on-off system (16) its water temperature from deaerated water outlet (13) by wall (11) after the heat transferred demineralized water and reduces to 65-68 ℃ by 110-118 ℃.Demineralized water and deaerated water are done reverse flow, the demineralized water import (13) that enters (9) by synchronous on-off system (16), and the opposite side by wall (11) absorbs 1/2(t _Bh-t _Gs) heat after flow out from outlet (14), through tube connector (15) water inlet pipe group (3) heat that absorbs is taken back deoxygenation head (1) and form energy inner loop passage, on-off system has two passages that separate fully synchronously, and independently switch element and Flow-rate adjustment element are arranged on each passage.Two switch elements can be by a kind of control mode synchronous opening/closing, and flow can mix up in advance.

Reference paper:

" 1 " (U.S.) Bates Co., Ltd Treatment of Industrial Water handbook (the 7th edition)

1982

The boiler feedwater of " 2 " low-pressure boiler water treatment editorial office is handled

" 3 " Gansu Polytechnical Univ fourth becomes big Centrifugal Pumps ﹠ Axial Pumpss principle

And waterpower calculates 1981

Claims

1, atmospheric-type thermodynamic deoxidizing device, it comprises that deoxygenation head (1) is arranged in the top of vertical water tank (2), (also can be horizontal water tank), a deoxygenation vapor interface (6) and one can be exported the pressure-reducing valve that steam pressure is the 0.04-0.09MPa gauge pressure (7) and link to each other, an internal energy EGR (9) is adorned in deaerated water outlet (8) outside at vertical water (2), it is tied mutually with synchronous on-off system (16) again, it is characterized in that (8), (9), (16) form demineralized water and deaerated water energy circulation and flow equilibrium loop each other with tube connector (15).

2, device according to claim 1 is characterized in that internal energy EGR (9) for to have two parallel fluid channels that separate fully, each runner that the heat-exchanger rig of independent inlet and outlet connectors is arranged, and its model specification size is not limit.

3, device according to claim 1 is characterized in that synchronizing channel device (16) has two passages that separate fully, the mechanism that has the independent switch element to open and close individually or simultaneously on each passage.