CN2134590Y

CN2134590Y - Low order spray packed type thermal deoxidater

Info

Publication number: CN2134590Y
Application number: CN 92232632
Authority: CN
Inventors: 孙全; 魏克诚
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-08
Filing date: 1992-09-08
Publication date: 1993-05-26
Anticipated expiration: 2002-09-08

Abstract

The utility model relates to a low-order spray and filler-type thermal de-aerator, which belongs to the field of the water supply de-aeration device for a boiler, and comprises a heat exchanger, a de-aerator, a water supply tank, a water service pipe, a steam pipe and a valve which are communicated. The inner part of the de-aerator is provided with a spray device, a filler layer, a steam distribution pipe and a boiling pipe which are arranged at the same height mark and low-order arrangement of the boiler operation, and various indicating devices can be arranged on the operating disk of the boiler. The de-aerator is suitable for the thermal de-aerating boiler, and is especially suitable for the thermal de-aeration of the boiler with 4 t/h, 6.5 t/h. The utility model has the advantages of simple structure, convenient operation, good de-aerating effect and reliable industrial operation, and is an ideal thermal de-aerator.

Description

Low order spray packed type thermal deoxidater

A kind of low level spray material filling type thermal deaerator, it belongs to the boiler water deaeration equipment class of water treatment facilities.

The thermal deaerator that prior art provides generally adopts the trickle disc type, and its weak point steam discharge heat loss is bigger; Also having a kind of is atomizing, and its shortcoming is that the water that enters oxygen-eliminating device needs can spray greater than the pressure of 0.2MPa, and they all need high-order the layout, generally are located at the position apart from 8 meters of boiler feed pump absolute altitudes.In order to avoid cause vaporization and influence the water pump normal water supply in the decompression of feed pump cause.Boiler room insufficient height to 4t/h, 6.5t/h can not adopt thermal deaerator.

The object of the present invention is to provide a kind of low level to arrange, promptly be located at the same absolute altitude of boiler attendance position, heat exchange and thermal de-aeration are abundant, and thermal loss is little, and is simple in structure, the low level spray material filling type thermal deaerator that cost is low.

Technical characterstic of the present invention is, to be heated to more than 50 ℃ through heat exchanger from the demineralized water of about 10 ℃ of high-order softening water tanks, enter oxygen-eliminating device, pass through spray equipment, water is sprayed into thin current, contact with steam and to be heated to 85 ℃-90 ℃, be heated to 103 ℃ through packing layer and the vapor mixing that evenly rises from the bottom steam distributor pipe again, reach thorough deoxygenation more than 104 ℃ after be heated to for boiling tube sprays in the water pot superheated steam, surplus vapour is taken the oxygen that parses outside the device out of, water outlet cools to below 60 ℃ through heat exchanger and water inlet exchange heat, is sent to boiler by boiler feed pump.

Technical solution of the present invention in conjunction with the accompanying drawings 1, low level spray material filling type thermal deaerator structural representation is described further.

Low level spray material filling type thermal deaerator by heat exchanger, oxygen-eliminating device, formed for water pot, water pipe, steam pipe and valve UNICOM, in the oxygen-eliminating device, top dress spray equipment, middle and lower part have packing layer 12, bottom to establish distribution of steam pipe 9, give dress boiling tube 3 in bottom in the water pot 4.Heat exchanger is to form with the upper and lower casing 25 middle dividing plates 26 that are welded with many column-row arrangement gravity type heat pipes 27 that clamp of bolted.Oxygen-eliminating device is by the tank body 19 of cylindrical shape double headed roller ring flange 13; bottom dress disc orifice plate 11 in its chamber; place packing layer 12 above; filler can be selected uncommon ring of drawing of stainless steel or aluminum alloy material or polyhedron grain for use, also can use useless built-in-opener tube manufacturing; the oxygen-eliminating device loam cake is the cap shape; the flanged dish in blast pipe 16, lower surface of air bleeding valve 15 is equipped with in UNICOM of crown central authorities; be horizontally disposed with in the chamber with shower 18; adorn the spray equipment that a plurality of shower nozzles 17 constitute below it, forming on the water pot top cylinder with bolted.Giving water pot 4 is the round can of two ends band end socket, one end is established manhole 5, its side dress water level meter 6, drive the boiling tube 3 of a plurality of vapor outlet port 2 above lower horizontal is provided with in jar, be welded with the cylinder of flanged dish in the middle of above jar, below the cylinder middle part is horizontally disposed with, open the distribution of steam pipe 9 of a plurality of steam (vapor) outlets 10.The left end of heat exchanger top box water inlet pipe 23 UNICOM's showers 18, put into water valve 22 on the pipe 23, level control valve 20, the high-order softening water tank of right-hand member UNICOM come water pipe 28, the left end of nowel is connected the outlet pipe 21 to water pot 4 bottoms, its pipe is gone up dress feed water valve 24, and right-hand member is through outlet pipe 29 logical boiler feed pumps 30.Steam pipe 8 UNICOM boiler vapour source and distribution of steam pipes 9, Guan Shangshe steam pressure automatic regulating valve 7, dress steam bypass valve 1 UNICOM's boiling tube 3 on the bypass branch road of pipe 8.

The operation of low level spray material filling type thermal deaerator:

Standard-sized sheet air bleeding valve 15 at first when starting operation is opened water intaking valve 22 to suitable aperture, drives steam pressure automatic regulating valve 7 then, to the oxygen-eliminating device steam supply.When surpassing boiling tube 3 for water pot 4 water levels, open steam bypass valve 1, when giving the water pot water level, open feed water valve 24 and start boiler feed pump to boiler water supply to center line.When the oxygen-eliminating device water outlet reaches capacity temperature, suitably align the aperture of air bleeding valve 15, keeping the oxygen-eliminating device internal pressure is the 0.02MPa gauge pressure, leaving water temperature be 104 ℃ determine the water-soluble oxygen content of separating should be less than 15 micrograms per litre.Be not more than at dissolved oxygen content under the prerequisite of 20 micrograms per litre, suitably turn down steam bypass valve 1 and air bleeding valve 15 to reduce vapour losses.

When opening water intaking valve 22, heating up through heat exchanger from the water of about 10 ℃ of high-order softening water tanks enters oxygen-eliminating device, and water outlet is a thermal source when to boiler water supply, itself be cooled to below 60 ℃, then by boiler feed pump 30,, vaporize because of decompression preventing to boiler water supply.Giving under the condition of water pot 4 stable levels, all can reach stable through the leaving water temperature of heat exchanger.

During normal the operation, per hour oxygen-eliminating device pressure of inspection record is intake and leaving water temperature, and the sampling and measuring dissolved oxygen.As find dissolved oxygen greater than 20 micrograms per litre, should ascertain the reason and in time eliminate.

Should at first stop steam supply and then stop into water when out of service, being strictly on guard against cuts off the water earlier afterwards stops vapour.Especially note should not closing air bleeding valve 15 damage equipment in order to avoid the interior pressure-bearing of device is too high.

This low level spray material filling type thermal deaerator has following advantage:

1, oxygen-eliminating device is located at the same absolute altitude of boiler attendance, low level is arranged, need not increase the boiler room to 4t/h, 6.5t/h boiler and can settle this oxygen-eliminating device of use;

2, oxygen-eliminating device adopts the spray material filling type, both be different from the bigger trickle disc type of steam discharge heat loss, also being different from the pressure that needs 0.2MPa can aerosol oxygen-eliminating device, and this spray equipment only needs the pressure greater than 0.05MPa, but utilizes high-order softening water tank to come just automatic water supplement of water;

3, inserts can adopt aluminium alloy (the available useless built-in-opener transformation of the way) to make and draw uncommon ring or polyhedron, replaces stainless steel to draw uncommon ring, reduces cost, weight reduction;

4, the gravity type heat pipe heat exchanger that adopts the superconduction thermal element to make, thermal efficiency height, 104 ℃ of hot water behind thermal de-aeration, can carry out heat exchange rapidly with about 10 ℃ water inlet, fully effectively utilize heat, and use below the water for cooling to 60 ℃, unlikely causing before feed pump vaporized;

5, the indicating meter of oxygen-eliminating device such as pressure, temperature, dissolved oxygen, water level all can be located on the boiler attendance dish, and water intaking valve can be located in the operating room, are convenient to levelling.

This low level spray material filling type thermal deaerator is adapted to the thermal de-aeration that the thermal de-aeration boiler is particularly suitable for 4t/h, 6.5t/h boiler, and is simple in structure, cost is low, but low level is arranged, easy to operate, deaerating effect is good, and industry is reliable, is a kind of desirable thermal deaerator.

Claims

1, a kind of low level spray material filling type thermal deaerator, it by heat exchanger, oxygen-eliminating device, formed for water pot water pipe, steam pipe and valve UNICOM, it is characterized in that, oxygen-eliminating device internal upper part dress spray equipment, there is packing layer 12 middle and lower part, distribution of steam pipe 9 is established in the bottom, gives dress boiling tube 3 in bottom in the water pot 4.

2, by the said low level spray of claim 1 material filling type thermal deaerator, it is characterized in that said heat exchanger, by upper and lower casing 25, the centre clamps the dividing plate 26 that is welded with many column-row arrangement gravity type heat pipes 27 and forms.

3, by the said low level of claim 1 spray material filling type thermal deaerator, it is characterized in that said packing layer 12 fillers can select uncommon ring of drawing of stainless steel or aluminum alloy material or polyhedron grain for use, also can use useless built-in-opener tube manufacturing.