CN204201873U - A kind of boiler deoxidizing method equipment of novel energy-conserving - Google Patents
A kind of boiler deoxidizing method equipment of novel energy-conserving Download PDFInfo
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- CN204201873U CN204201873U CN201420600166.2U CN201420600166U CN204201873U CN 204201873 U CN204201873 U CN 204201873U CN 201420600166 U CN201420600166 U CN 201420600166U CN 204201873 U CN204201873 U CN 204201873U
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Abstract
The utility model relates to a kind of boiler deoxidizing method equipment of novel energy-conserving, described equipment comprises degassing membrane component, filter, raw water pump and vavuum pump, described degassing membrane component comprises at least one membrane contactor, described membrane contactor bottom is provided with water inlet, membrane contactor top is provided with delivery port, described membrane contactor bottom is provided with vacuum port, and membrane contactor top is provided with inflatable mouth; Described filter one end is provided with original water inlet, and the other end is provided with former water out, and described original water inlet is connected with raw water pump, and former water out is connected with the water inlet of membrane contactor bottom; Described vacuum port is connected with vavuum pump, and inflatable mouth is connected with gassing pipe, and described gassing pipe is provided with purge valve, and the pipeline between former water out and water inlet is provided with flow control valve, and the pipeline that vacuum port is connected with vavuum pump is provided with vacuum valve.It is simple that the utility model has structure, reasonable in design, has the advantages such as floor space is little, energy-efficient, efficient deoxygenation.
Description
Technical field
The utility model relates to a kind of boiler deoxidizing method equipment, especially relates to a kind of boiler deoxidizing method equipment of novel energy-conserving.
Background technology
In boiler feedwater treatment process process, deoxygenation is a very crucial link.Oxygen is the main corrosion material of the feed water system of boiler, oxygen in water supply system should be removed rapidly, otherwise it can corrode water supply system and the parts of boiler, corrosive substance iron oxide can enter in boiler, deposit or be attached on boiler tube wall and heating surface, form indissoluble and conduct heat iron dirt bad, the iron dirt of corrosion can cause inner-walls of duct appearance point cheat, resistance coefficient increase.When corrosive pipeline is serious, even can there is pipeline explosion accident.National regulation evaporation capacity be more than or equal to the steam boiler of 2 tphs and water temperature be more than or equal to the hot-water boiler of 95 DEG C all must deoxygenation.Many boiler feedwater work for the treatment of persons are seeking not only efficient but also economic deoxidation method always for many years.
Thermal de-aeration is that current boiler industry applies maximum a kind of Deoxidization methods, but this deoxidation method requires that an equipment high position is arranged, equipment volume is huge, adds capital expenditure, and design, installation, operation are all inconvenient, and removal efficiency is limited, and operating cost is high.Atmosphere thermal deaerator need consume heating steam, consumes a large amount of heat energy.Deaeration in condenser is warm deoxygenation technology in one, relative thermal de-aeration technology, its heating condition makes moderate progress, boiler room reduces from steam consumption, but most of shortcoming of thermal de-aeration still exists, a high position for deaeration in condenser is arranged, higher than thermal de-aeration to the requirement of the key equipments such as operational management jet pump, force (forcing) pump; Low position also needs certain difference in height, and requires also very high to the operational management of the key equipment such as jet pump, force (forcing) pump, also add heat transmission equipment and cyclic water tank in addition.
Chemical deoxidization comprises the scrap steel gets rid of oxygen, sodium sulfite deoxygenation and hydrazine deoxygenation.The scrap steel gets rid of oxygen water temperature requires to be greater than 70 DEG C, best with 80 ~ 90 DEG C of temperature effects, temperature 20 ~ 30 DEG C of deaerating effects are the poorest, namely require to compress with steel cuttings, more tight better, water oxygen level is larger, requirement water flow velocity reduces, because technological improvement and raising are not quite since the scrap steel gets rid of oxygen self-application, deaerating effect is also not too reliable, is generally used in the less demanding miniature boiler room of feed water quality, or as heat supply network make-up water, and the supplementary deoxygenation after high-pressure boiler thermal de-aeration, generally only make ancillary method.Sodium sulfite deoxygenation is dosing deoxidizing in a kind of stove, low, the safety of the method investment, and operation is also comparatively simple, but this method chemical feeding quantity is wayward, and deaerating effect is unreliable, cannot ensure choosing mark.In addition, also can increase boiler water salt content, cause blowdown flow rate increase, wasted heat, very uneconomical, the method is generally used in miniature boiler room and a little therrmodynamic system higher to water quality requirement, as auxiliary Deoxidization method.Hydrazine deoxygenation is multiplex makes the ancillary method after thermal de-aeration, to reach the residual oxygen thoroughly removed in water, do not increase the salt content of boiler water, the deoxygenation of high-pressure boiler many employings hydrazine, hydrazine and oxygen react and generate nitrogen and water, are conducive to the further corrosion hindering boiler, but because hydrazine is poisonous, easy volatilization, can not be used for drinking water boiler and life-use water boiler deoxygenation, and many boiler applying units are just limiting or do not re-using this method.
Utility model content
In order to overcome the deficiency that prior art exists, the utility model provides a kind of boiler deoxidizing method equipment of novel energy-conserving.
A kind of boiler deoxidizing method equipment of novel energy-conserving, described equipment comprises degassing membrane component, filter, raw water pump and vavuum pump, described degassing membrane component comprises at least one membrane contactor, described membrane contactor bottom is provided with water inlet, membrane contactor top is provided with delivery port, described membrane contactor bottom is provided with vacuum port, and membrane contactor top is provided with inflatable mouth; Described filter one end is provided with original water inlet, and the other end is provided with former water out, and described original water inlet is connected with raw water pump, and former water out is connected with the water inlet of membrane contactor bottom; Described vacuum port is connected with vavuum pump, and inflatable mouth is connected with gassing pipe, and described gassing pipe is provided with purge valve, and the pipeline between former water out and water inlet is provided with flow control valve, and the pipeline that vacuum port is connected with vavuum pump is provided with vacuum valve.
As preferably, described degassing membrane component is composed in series by two membrane contactors.
As preferably, described equipment is composed in series by two degassing membrane components.
As preferably, the delivery port of each membrane contactor is connected with total delivery port respectively by outlet conduit, described outlet conduit is respectively equipped with control valve, and total water outlet is provided with dissolved oxygen meter, and the delivery port of described each membrane contactor is connected with dissolved oxygen meter respectively by outlet conduit.That can detect separately each membrane contactor delivery port contains oxygen index (OI), to monitor the degassing performance of each membrane contactor, improves problem film investigation efficiency during equipment fault.
As preferably, described membrane contactor is hollow fiber membrane contactors, and described hollow fiber membrane contactors is cylindric, and described hollow fiber membrane contactors comprises body, is provided with one piece of baffle plate in described body, and described baffle plate and body are mutually vertical to be arranged.Hollow fiber membrane contactors specific area is large, and the setting of baffle plate, add length and the fluid retention time of runner, mass transfer effect is better.
As preferably, described baffle plate is round pie, and described baffle plate is arranged on the axial centre position of body, and described baffle plate does not contact with inboard wall of tube body.
As preferably, described filter is cartridge filter.Cartridge filter effectively can remove the suspension etc. in liquid, has the advantages such as overall volume is little, filter area is large, resistance is little, long service life.
The utility model energy consumption is only from vavuum pump, raw water pump and a small amount of pure nitrogen, and therefore relative to deoxidation method of the prior art, the utility model has the advantages such as significantly power consumption is low, easy for installation.
The utility model has following beneficial effect:
1, adopt degassing film deoxygenation, the removal efficiency of former water oxygen gas improves greatly, and one time removal efficiency is greater than 95%;
2, do not produce any accessory substance, anticaustic can not be produced to boiler;
3, HTHP is not related in this equipment oxygen removal process, handling safety, simple;
4, structure is simple, reasonable in design, has the advantages such as floor space is little, energy-efficient, efficient deoxygenation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model membrane contactor.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but protection domain of the present utility model is not limited to this.
Embodiment 1
With reference to Fig. 1, Fig. 2, a kind of boiler deoxidizing method equipment of novel energy-conserving, comprise degassing membrane component, filter 2, raw water pump 3 and vavuum pump 4, described degassing membrane component comprises at least one membrane contactor 1, and described membrane contactor 1 bottom is provided with water inlet 5, and membrane contactor top is provided with delivery port 6, described membrane contactor 1 bottom is provided with vacuum port 7, and membrane contactor top is provided with inflatable mouth 8; Described filter 2 one end is provided with original water inlet 9, and the other end is provided with former water out 10, and described original water inlet 9 is connected with raw water pump 3, and former water out 10 is connected with the water inlet 5 of membrane contactor 1 bottom; Described vacuum port 7 is connected with vavuum pump 4, inflatable mouth 8 is connected with gassing pipe 11, described gassing pipe 11 is provided with purge valve 12, and the pipeline between former water out 10 and water inlet 5 is provided with flow control valve 13, and the pipeline that vacuum port 7 is connected with vavuum pump 4 is provided with vacuum valve 14.
Described equipment is composed in series by two degassing membrane components, each degassing membrane component is composed in series by two membrane contactors respectively, the delivery port 6 of each membrane contactor is connected with total delivery port 16 respectively by outlet conduit 15, described outlet conduit 15 is respectively equipped with control valve 17, total delivery port 16 place is provided with dissolved oxygen meter 18, the delivery port 6 of described each membrane contactor is connected with dissolved oxygen meter 18 respectively by outlet conduit 15, that can detect separately each membrane contactor delivery port contains oxygen index (OI), to monitor the degassing performance of each membrane contactor, improve problem film investigation efficiency during equipment fault.
Described membrane contactor 1 is hollow fiber membrane contactors, described hollow fiber membrane contactors is cylindric, described hollow fiber membrane contactors 1 comprises body 19, one piece of baffle plate 20 is provided with in described body, described baffle plate 20 is arranged with body 19 is mutually vertical, described baffle plate 20 is in round pie, described baffle plate 20 is arranged on the axial centre position of body 19, described baffle plate 20 does not contact with body 19 inwall, hollow fiber membrane contactors specific area is large, the setting of baffle plate, add length and the fluid retention time of runner, mass transfer effect is better.Described filter 2 is cartridge filter.
Embodiment 2
With reference to Fig. 1, Fig. 2, plant the boiler deoxidizing method equipment of novel energy-conserving, comprise degassing membrane component, filter 2, raw water pump 3 and vavuum pump 4, described degassing membrane component comprises at least one membrane contactor 1, and described membrane contactor 1 bottom is provided with water inlet 5, and membrane contactor top is provided with delivery port 6, described membrane contactor 1 bottom is provided with vacuum port 7, and membrane contactor top is provided with inflatable mouth 8; Described filter 2 one end is provided with original water inlet 9, and the other end is provided with former water out 10, and described original water inlet 9 is connected with raw water pump 3, and former water out 10 is connected with the water inlet 5 of membrane contactor 1 bottom; Described vacuum port 7 is connected with vavuum pump 4, inflatable mouth 8 is connected with gassing pipe 11, described gassing pipe 11 is provided with purge valve 12, and the pipeline between former water out 10 and water inlet 5 is provided with flow control valve 13, and the pipeline that vacuum port 7 is connected with vavuum pump 4 is provided with vacuum valve 14.
Described membrane contactor 1 is hollow fiber membrane contactors, described hollow fiber membrane contactors is cylindric, described hollow fiber membrane contactors 1 comprises body 19, one piece of baffle plate 20 is provided with in described body, described baffle plate 20 is arranged with body 19 is mutually vertical, described baffle plate 20 is in round pie, and described baffle plate 20 is arranged on the axial centre position of body 19, and described baffle plate 20 does not contact with body 19 inwall; Described filter 2 is cartridge filter.
Equipment de-sign (disposal ability 75T/H, water outlet is containing oxygen DO<15PPb) is as shown in table 1:
Table 1
| Membranous type number | ETO-10×28 |
| Film quantity | 7 × 3 grades=21 |
| Operational mode | Vacuumize+nitrogen purging |
| Vavuum pump | 250 sides/hour, Pendular ring type, vacuum 50 is held in the palm |
| Installed power | 7.5KW |
| Purge tolerance | 0.5 side/hour/film |
| Admission pressure | ≤0.7KG |
| Nitrogen gas purity | ≥99.995% |
In order to reach the object of efficient deoxygenation, treatment process steps of the present utility model is as follows:
(1) former water is entered in filter 2 by original water inlet 9 and carries out pretreatment under raw water pump 3 acts on, and makes Ca in water quality
2+, Mg
2+total content <20mg/L, SS<10, ensure do not have surfactant in water simultaneously as far as possible;
(2) pretreated former water is flowed out by former water out 10, enters membrane contactor through water inlet 5, and former water sidles from film silk, makes water be full of whole degassing membrane component, and attention does not exceed the maximum pressure that membrane module allows; Open flow control valve 13 regulating water flow to desired value, note the maximum stream flow not exceeding the permission of single membrane contactor;
(3) open purge valve 12, purity is the N of 99.9%
2enter from inflatable mouth 8, pressure is no more than 0.7Kgf/cm
2, N
2walk inside film silk;
(4) vacuum port 7 is connected to vavuum pump 4 by pipeline, and vacuum is 50mm mercury column; Open vacuum valve 14, start vavuum pump 4;
(5) former water is from membrane contactor delivery port 6 water outlet, and membrane contactor 1 inside is for there being the film cloth of baffle arrangement, and water outlet measurement of oxygen content single-stage removal efficiency can reach more than 95%;
(6) next process can be entered after water outlet oxygen content is qualified.
The energy consumption calculation of the utility model deoxidation equipment is following (calculating with 0.46 yuan/degree electricity):
Power consumption: 7.5 degree × 0.46=3.45 unit/hour
Nitrogen consumes: 0.5m
3× 21=10.5m
3/ hr
Nitrogen cost: 10.5m
3/ hr × (45+4) × 0.46/60m
3=3.95 yuan/hr
Power consumption+nitrogen=3.45+3.95=7.4 unit/hour
Ton water nitrogen cost: 7.4 yuan/hr ÷, 75 tons of/hour ≈, 0.1 yuan/ton of water.
The steam occupancy of usual thermal deaerator is 12 ~ 15% of boiler capacity, that is the thermal deaerator that uses of the boiler of 75 tons/hour per hour need to take 75 tons × 0.12=9 ton/hour quantity of steam, and the heat exchanger effectiveness of thermal deaerator is 70 ~ 80%, (on the one hand thermal deaerator has that air bleeding valve is constantly outer arranges steam to the quantity of steam of so thermal deaerator waste per hour, cold water on the other hand in steam and thermal deaerator does heat exchange, by hot water heating to boiling, have the problem of thermal conversion efficiency) be 9 tons/hour × (1 ~ 80%)=1.8 ton, boiler export vapor (steam) temperature is 250 degree, cost is 200 yuan/ton, and client adopts at present is secondary waste steam (namely low-pressure steam), the words that original as low-pressure steam is converted according to 150 yuan/ton, the use cost of thermal deaerator is 1.8 tons/hour × 150 yuan/ton=270 yuan/hour, namely the operating cost of thermal deaerator is 270 ÷, 75 tons/hour=3.6 yuan/ton water.
Comprehensive above analysis, the energy consumption adopting thermal deaerator is 3.6 yuan/ton of water, and adopts energy consumption of the present utility model to be only 0.1 yuan/ton of water.
Table 2 is that this deaeration plant system (75T/h) water outlet contains oxygen record (continuous 1 week):
Table 2
| Former water PH | Flow (m3/h) | Inflow temperature (DEG C) | SS (Mg/L) | Ca 2+ (Mg/L) | Mg 2+ (Mg/L) | Water inlet is containing oxygen (PPm) | Water outlet is containing oxygen (PPb) | |
| 1 | 7.1 | 13 | 14 | 4 | 0.8 | 0.5 | 9.6 | 42 |
| 2 | 7.2 | 14 | 15 | 6 | 0.7 | 0.4 | 9.5 | 49 |
| 3 | 7 | 13 | 14 | 5 | 0.6 | 0.3 | 9.7 | 30 |
| 4 | 7.1 | 14 | 14 | 6 | 0.7 | 0.5 | 9.7 | 37 |
| 5 | 7 | 13 | 14 | 5 | 0.5 | 0.8 | 9.7 | 37 |
| 6 | 7 | 14 | 15 | 4 | 0.5 | 0.6 | 9.6 | 27 |
| 7 | 7.1 | 13 | 16 | 4 | 0.8 | 0.7 | 9.7 | 25 |
The utility model has the advantage of: 1, complete equipment is with degassing film deoxyprocess for principle, can replace the main equipments such as deoxidation tower completely, design, installation, operation are all very convenient, can be applicable to different occasion, such as laboratory, engineering project, container etc.; 2, modularized design, dilatation is convenient; 3, provide closed running environment, ensure without gas leak phenomenon, realize cleaner production; 4, each membrane contactor delivery port has outlet conduit (flexible pipe) to be directly communicated with total delivery port dissolved oxygen meter, pass through Valve controlling, that can detect separately each membrane contactor delivery port contains oxygen index (OI), to monitor the degassing performance of each membrane contactor, improves problem film investigation efficiency during equipment fault.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (7)
1. the boiler deoxidizing method equipment of a novel energy-conserving, it is characterized in that: described equipment comprises degassing membrane component, filter, raw water pump and vavuum pump, described degassing membrane component comprises at least one membrane contactor, described membrane contactor bottom is provided with water inlet, membrane contactor top is provided with delivery port, described membrane contactor bottom is provided with vacuum port, and membrane contactor top is provided with inflatable mouth; Described filter one end is provided with original water inlet, and the other end is provided with former water out, and described original water inlet is connected with raw water pump, and former water out is connected with the water inlet of membrane contactor bottom; Described vacuum port is connected with vavuum pump, and inflatable mouth is connected with gassing pipe, and described gassing pipe is provided with purge valve, and the pipeline between former water out and water inlet is provided with flow control valve, and the pipeline that vacuum port is connected with vavuum pump is provided with vacuum valve.
2. the boiler deoxidizing method equipment of novel energy-conserving according to claim 1, is characterized in that: described degassing membrane component is composed in series by two membrane contactors.
3. the boiler deoxidizing method equipment of novel energy-conserving according to claim 2, is characterized in that: described equipment is composed in series by two degassing membrane components.
4. the boiler deoxidizing method equipment of novel energy-conserving according to claim 3, it is characterized in that: the delivery port of each membrane contactor is connected with total delivery port respectively by outlet conduit, described outlet conduit is respectively equipped with control valve, total water outlet is provided with dissolved oxygen meter, and the delivery port of described each membrane contactor is connected with dissolved oxygen meter respectively by outlet conduit.
5. the boiler deoxidizing method equipment of novel energy-conserving according to claim 1, it is characterized in that: described membrane contactor is hollow fiber membrane contactors, described hollow fiber membrane contactors is cylindric, described hollow fiber membrane contactors comprises body, be provided with one piece of baffle plate in described body, described baffle plate and body are mutually vertical to be arranged.
6. the boiler deoxidizing method equipment of novel energy-conserving according to claim 5, is characterized in that: described baffle plate is round pie, described baffle plate is arranged on the axial centre position of body, and described baffle plate does not contact with inboard wall of tube body.
7. the boiler deoxidizing method equipment of novel energy-conserving according to claim 1, is characterized in that: described filter is cartridge filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420600166.2U CN204201873U (en) | 2014-10-17 | 2014-10-17 | A kind of boiler deoxidizing method equipment of novel energy-conserving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420600166.2U CN204201873U (en) | 2014-10-17 | 2014-10-17 | A kind of boiler deoxidizing method equipment of novel energy-conserving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204201873U true CN204201873U (en) | 2015-03-11 |
Family
ID=52659829
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|---|---|---|---|
| CN201420600166.2U Expired - Fee Related CN204201873U (en) | 2014-10-17 | 2014-10-17 | A kind of boiler deoxidizing method equipment of novel energy-conserving |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105254052A (en) * | 2015-11-20 | 2016-01-20 | 苏州荣保昌机械科技有限公司 | Membrane process liquid-gas separation device for deoxidizing boiler |
| CN105417609A (en) * | 2015-12-07 | 2016-03-23 | 华北电力大学（保定） | Method for adjusting dissolved gases in boiler feed water |
| CN106152107A (en) * | 2015-03-24 | 2016-11-23 | 上海宝钢化工有限公司 | A kind of waste heat boiler deaerating type of cycles and deoxyprocess |
| CN112484008A (en) * | 2019-09-11 | 2021-03-12 | 气体产品与化学公司 | Steam generation process and system |
| WO2022160667A1 (en) * | 2021-01-26 | 2022-08-04 | 上海优华系统集成技术股份有限公司 | Zero steam consumption deaeration system |
-
2014
- 2014-10-17 CN CN201420600166.2U patent/CN204201873U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152107A (en) * | 2015-03-24 | 2016-11-23 | 上海宝钢化工有限公司 | A kind of waste heat boiler deaerating type of cycles and deoxyprocess |
| CN105254052A (en) * | 2015-11-20 | 2016-01-20 | 苏州荣保昌机械科技有限公司 | Membrane process liquid-gas separation device for deoxidizing boiler |
| CN105417609A (en) * | 2015-12-07 | 2016-03-23 | 华北电力大学（保定） | Method for adjusting dissolved gases in boiler feed water |
| CN112484008A (en) * | 2019-09-11 | 2021-03-12 | 气体产品与化学公司 | Steam generation process and system |
| WO2022160667A1 (en) * | 2021-01-26 | 2022-08-04 | 上海优华系统集成技术股份有限公司 | Zero steam consumption deaeration system |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20161017 |