CN107351239A - A kind of method using steam power plant's steam production PHC pile tubes - Google Patents
A kind of method using steam power plant's steam production PHC pile tubes Download PDFInfo
- Publication number
- CN107351239A CN107351239A CN201710771227.XA CN201710771227A CN107351239A CN 107351239 A CN107351239 A CN 107351239A CN 201710771227 A CN201710771227 A CN 201710771227A CN 107351239 A CN107351239 A CN 107351239A
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- China
- Prior art keywords
- steam
- power plant
- phc pile
- production
- steam power
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
- B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
- B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
- B28B21/30—Centrifugal moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
- B28B21/62—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements circumferential laterally tensioned
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/024—Steam hardening, e.g. in an autoclave
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
The present invention relates to building concrete field, in particular, is related to a kind of method that unsaturated water vapour maintenance making PHC pile tubes are overheated using steam power plant, it includes concrete mix, raw material, maintaining process, steam power plant's steam conveying.The purpose of invention is to overheat unsaturated high steam instead of self-produced saturated high pressure steam production PHC pile tubes using steam power plant.Present invention aims at：First, government policy is responded, is environmental protection, disables coal-burning boiler；2nd, solve to greatly improve production cost because using other boilers instead after enterprise's deactivation coal-burning boiler；3rd, using steam power plant's steam production PHC pile tubes, the steam for making steam power plant unnecessary is comprehensively utilized, avoids the wasting of resources, have very high technical economic benefit and social benefit.
Description
Technical field
The present invention relates to building concrete field, in particular, is related to one kind and overheats unsaturated water steaming using steam power plant
The method that vapour maintenance makes PHC pile tubes.
Background technology
Pretensioned prestressing high-strength concrete tubular pile（Call in the following text：PHC pile tubes）It is the cement using centrifugal molding process production
Concrete product, it is widely used in building foundation engineering, its strength grade of concrete is C80.In order to realize in the production of PHC pile tubes
Concrete strength is rapidly achieved C80, reduces the service cycle in pipe die and stockyard, and use is steam-cured --- the secondary maintainer that pressure is steamed
Skill.Substantial amounts of water need to be consumed by including atmospheric steam curing and autoclave curing when PHC pile tubes produce during concrete curing
Steam, and use the lower-cost coal-burning boiler that steams produces saturated vapor mostly in tubular pile industry at present.
By diameter 3.2m, a length 28m still kettle, which often produces a kettle pile tube, needs the saturation water of 15 ~ 20 tons of consumption to steam
Vapour, calculated by three megameter pile tubes are produced per year, consume about 10.5 ten thousand tons of water vapours every year, convert into consumption about 20,000 tons of coals.
The chemical substance into air is produced using coal-burning boiler process, causes seriously to pollute, fuel combustion is that China is big
The important sources of gas pollutant, and coal is a kind of pollution source the most serious in all burnings, 1. coals are in combustion process
Middle to produce substantial amounts of sulfur dioxide, concentration reaches generation Acid Rain Effect environment to a certain degree；2. produced during coal burning big
The carbon dioxide of amount, greenhouse effects are caused to influence environment；3. coal fire discharged a large amount of inhalable particles, are detrimental to health；3. combustion
Caused hydronitrogen and moisture and other compounds react during coal, produce a kind of small-sized containing nitric acid
Grain, this particle can have an impact to respiratory system, be detrimental to health.
As country increasingly payes attention to environmental issue, particularly atmosphere polluting problem, therefore tubular pile industry relate to pot
The governing problem of the related fields such as kiln gas, dust, sewage, noise, many areas have disabled less than 20 tons coal-burning boilers, and steam
It is to use coal-burning boiler that the most economical mode of steam is produced in vapour maintaining process, but is prohibited under the overall situation of national green development
It is imperative that clean energy resource is used instead with coal-burning boiler, but causes steam use cost to be substantially improved using clean energy resource boiler,
Including biomass boiler cost 20% ~ 30%, and fuel value is insufficient, lighter hydrocarbons gas boiler cost 110% ~ 120%, naturally
Gas boiler cost 120% ~ 130%, therefore cause product cost to be lifted, profit reduces, and increases business burden.
The content of the invention
To reduce and solving background technology described problem, the present invention proposes to disable the self-produced saturated high pressure steam of coal-burning boiler,
PHC pile tubes are conserved using steam power plant's overheat unsaturated steam, determine concrete mix, maintaining process system and steam
Conveying equipment, reach production PHC pile tube purposes.Using steam power plant's steam production PHC pile tubes, you can avoid using coal-burning boiler pair
Pollution caused by environment, avoid using instead other clear energy sources boilers and increased cost, can be integrated steam power plant's steam again
Recycle, avoid the wasting of resources.
Technical scheme comprises the following steps used by the present invention solves the problems, such as its background technology：
Step 1：Steam power plant's steam imports, and subtube enters the steam-cured pond of each workshop, still kettle pipeline；
Step 2：By concrete mix ready-mixed concrete, cloth, centrifugation；
Step 3：Pile tube is molded after centrifugation, is put into steam-cured pond, is depressured export by still kettle or is derived using steam power plant's steam
Hot unsaturated steam, atmospheric steam curing is carried out by steam curing system；
Step 4：After step 3 obtains tubular pile demoulding, pile tube entrucking enters autoclave, and autoclave is interior by other decompression still kettles
Import steam or steam power plant imports steam, it is steam-cured using overheat unsaturated steam progress HTHP pressure by autoclave curing system
Shield, product is hoisted to stockyard stacking after maintenance.
Further, the step 2 concrete material includes binder materials, stone, sand, water, water reducer, wherein described
Binder materials include cement and silica flour.
Further, the step 2 concrete material includes 1300kg stones per cubic meter of concrete, 640kg sand,
295kg cement, 125kg silica flours, 120kg water, volume is determined according to the water reducer of different cultivars.
Further, steam power plant's steam be overheat unsaturated steam, its temperature be 200 ~ 240 DEG C, pressure be 0.70 ~
0.80MPa。
Further, the atmospheric steam curing system that steam power plant's steam of the step 3 is conserved to pile tube, it is quiet
Stop 0.5 hour, heat up 1.0 hours, 90 DEG C of constant temperature 4 hours, cool 0.5 hour；
Further, the HTHP autoclave curing system of the step 4 is boosting 2.5 hours, is led by other decompression still kettles
Enter steam, steam ftercompction is imported to 0.75MPa by steam power plant, constant pressure 5 hours, is depressured 1.5 hours.
As preferable technical scheme, steam power plant's steam conveying equipment of the step 1, including steam access, conveying follow
Ring utilizes pipeline, thermometer, pressure gauge, flowmeter, steam valve.
As preferable technical scheme, steam power plant's steam introduces steam-cured pond and still kettle, intercommunication between still kettle, and
Still kettle and steam-cured pond intercommunication, steam can be imported in still kettle pressure reduction and be used for autoclave curing or importing in other still kettles
Steam-cured pond is used for atmospheric steam curing.
The beneficial effects of the invention are as follows：Using the above method, steam power plant's overheat unsaturated steam is carried out integrating circulation profit
With production PHC pile tubes, ensure that PHC pile tube intensity reaches C80, other properties meet standard requirement.Still kettle decrease temperature and pressure
Steam derived from process carries out atmospheric steam curing using steam power plant's steam to pile tube, beneficial to concrete steam-cured intensity, than
The concrete steam-cured intensity of self-produced saturated vapor maintenance improves 15% ~ 20%.During autoclave curing, superheat steam temperature reaches
More than 200 DEG C, the shortcomings that compensate for unsaturated steam insufficient pressure so that later stage steam pressure intensity can reach C80, meet that technique will
Ask.Using steam power plant's steam, cancel the use of coal-burning boiler, reduce environmental pollution, avoid enterprise from increasing other clean energy resourcies
The use of boiler, and the tubular pile maintenance time is shortened on maintaining process, enterprise's production cost is reduced, while to steam power plant
Steam persistent loop utilizes, and avoids wasting, there is preferable economic benefit and social benefit.
Brief description of the drawings
Accompanying drawing 1 is production technology schematic flow sheet, and hollow arrow is expressed as steam circulation and utilizes process in schematic diagram, solid
Arrow is expressed as PHC pile tube production flows.
Embodiment
Steam power plant overheats unsaturated steam and branches to plant area, installation steam flowmeter, temperature by pipeline extraction by steam power plant
Table, pressure gauge are spent, enterprise's access, the original self-produced steam pipeline in each workshop is branched to, is also turned on each workshop still kettle and steam-cured
Pond, and still kettle and steam-cured pond be also by pipeline communication, and pipeline valve is set, use original still kettle thermometer, pressure
Power table and reset process system is carried out to original steam-cured pond temperature control system.
Embodiment 1
In terms of every cube of concrete, cement 294kg, specific surface area is taken to be more than 420m2/ kg silica flour 126kg, modulus of fineness be
2.8 ~ 3.2 natural sand 650kg, the stone 1290kg that particle diameter is 5mm ~ 25mm, equivalent to binder materials（Cement and silica flour）
The model HQ naphthalene series high-efficiency water-reducing agents of gross mass 0.55%, water 120kg, agitated machine stir into concrete mix, then by coagulation
Native mix cloth is into pipe pile steel mold, through prestressed reinforcement of tensioning, places in steam-cured pond that to stop 0.5 small by quiet after centrifugal forming
When, heat up 1.0 hours, constant temperature 4 hours, the 0.5 hour process system that cools carries out atmospheric steam curing, tubular pile demoulding, is sent into and steams
Kettle is pressed by boosting 2.5 hours, pressure reaches 0.75MPa, constant pressure 5 hours, is depressured 1.5 hours and carries out autoclave curing, maintenance terminates
After be hoisted to stockyard, be that the whole of the present invention uses process.
Embodiment 2
In terms of every cube of concrete, cement 287kg, specific surface area is taken to be more than 420m2/ kg silica flour 123kg, modulus of fineness be
2.8 ~ 3.2 natural sand 646kg, the stone 1311kg that particle diameter is 5mm ~ 25mm, equivalent to binder materials（Cement and silica flour）
The model HQ high performance water reducing agent of polyocarboxy acid of gross mass 2.4%, water 113kg, agitated machine stir into concrete mix, then will
Concrete mix cloth is into pipe pile steel mold, through prestressed reinforcement of tensioning, is placed after centrifugal forming in steam-cured pond and stops 0.5 by quiet
Hour, heat up 1.0 hours, constant temperature 4 hours, the 0.5 hour process system that cools carries out atmospheric steam curing, tubular pile demoulding, is sent into
Still kettle was by boosting 2.5 hours, and pressure reaches 0.75MPa, constant pressure 5 hours, is depressured and carries out within 1.5 hours autoclave curing, maintenance knot
Stockyard is hoisted to after beam, is that the whole of the present invention uses process.
Embodiment 3
In terms of every cube of concrete, cement 287kg, specific surface area is taken to be more than 420m2/ kg silica flour 123kg, modulus of fineness be
2.8 ~ 3.2 natural sand 646kg, the stone 1311kg that particle diameter is 5mm ~ 25mm, equivalent to binder materials（Cement and silica flour）
The model SK high performance water reducing agent of polyocarboxy acid of gross mass 1.1%, water 113kg, agitated machine stir into concrete mix, then will
Concrete mix cloth is into pipe pile steel mold, through prestressed reinforcement of tensioning, is placed after centrifugal forming in steam-cured pond and stops 0.5 by quiet
Hour, heat up 1.0 hours, constant temperature 4 hours, the 0.5 hour process system that cools carries out atmospheric steam curing, tubular pile demoulding, is sent into
Still kettle was by boosting 2.5 hours, and pressure reaches 0.75MPa, constant pressure 5 hours, is depressured and carries out within 1.5 hours autoclave curing, maintenance knot
Stockyard is hoisted to after beam, is that the whole of the present invention uses process.
Embodiment carries out core boring sampling with the made pile tube of batch match ratio, and core sample compression strength reaches C90, test piece intensity
Reach 88MPa, high performance water reducing agent of polyocarboxy acid concrete using naphthalene series high-efficiency water-reducing agent concrete steam Compressive Strength average after testing
Steam pressure strength mean value reaches 92MPa.
Certainly, better embodiment of the present invention is these are only, the use range of the present invention is not limited with this, therefore, it is every
Equivalent change is made in the principle of the invention to should be included within the scope of the present invention.
Claims (8)
1. a kind of method using steam power plant's steam production PHC pile tubes, this method mainly includes the concrete material of specific match ratio
Material, steam power plant's steam, maintaining process, steam circulation utilize conveying equipment；
Processing step is as follows：
Step 1：Steam power plant's steam imports, and subtube enters the steam-cured pond of each workshop, still kettle pipeline；
Step 2：By concrete mix ready-mixed concrete, cloth, centrifugation；
Step 3：Pile tube is molded after centrifugation, is put into steam-cured pond, is depressured export by still kettle or is derived using steam power plant's steam
Hot unsaturated steam, atmospheric steam curing is carried out by steam curing system；
Step 4：After step 3 obtains tubular pile demoulding, pile tube entrucking enters autoclave, and autoclave is interior by other decompression still kettles
Import steam or steam power plant imports steam, it is steam-cured using overheat unsaturated steam progress HTHP pressure by autoclave curing system
Shield, product is hoisted to stockyard stacking after maintenance.
2. according to a kind of production PHC pile tube methods of claim 1, it is characterised in that：The step 2 concrete material includes glue
Gel material, stone, sand, water, water reducer, wherein described binder materials includes cement and silica flour.
3. according to a kind of production PHC pile tube methods of claim 2, it is characterised in that：Every cube of the step 2 concrete material
Rice concrete includes 1300kg stones, 640kg sand, 295kg cement, 125kg silica flours, 120kg water, according to subtracting for different cultivars
Aqua determines volume.
4. according to a kind of production PHC pile tube methods of claim 1, it is characterised in that：Steam power plant's steam is that overheat is unsaturated
Steam, its temperature are 200 ~ 240 DEG C, and pressure is 0.70 ~ 0.80MPa.
5. according to a kind of production PHC pile tube methods of claim 1, it is characterised in that：Steam power plant's steam of the step 3 is to pipe
The atmospheric steam curing system that is conserved of stake, stops 0.5 hour to be quiet, heats up 1.0 hours, 90 DEG C of constant temperature 4 hours, cooling 0.5
Hour.
6. according to a kind of production PHC pile tube methods of claim 1, it is characterised in that：The HTHP pressure of the step 4 is steam-cured
Shield system is boosting 2.5 hours, and steam is imported by other decompression still kettles, and steam ftercompction is imported to 0.75MPa by steam power plant, permanent
Pressure 5 hours, it is depressured 1.5 hours.
7. according to a kind of production PHC pile tube methods of claim 1, it is characterised in that：Steam power plant's steam conveying of the step 1
Equipment, including steam access, conveying recycle pipeline, thermometer, pressure gauge, flowmeter, steam valve.
8. according to a kind of production PHC pile tube methods of claim 1, it is characterised in that：Steam power plant's steam introduce steam-cured pond and
Still kettle, intercommunication between still kettle, and still kettle and steam-cured pond intercommunication, steam can be imported to other steamings in still kettle pressure reduction
It is used for autoclave curing in pressure kettle or the steam-cured pond of importing is used for atmospheric steam curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710771227.XA CN107351239A (en) | 2017-08-26 | 2017-08-26 | A kind of method using steam power plant's steam production PHC pile tubes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710771227.XA CN107351239A (en) | 2017-08-26 | 2017-08-26 | A kind of method using steam power plant's steam production PHC pile tubes |
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| CN107351239A true CN107351239A (en) | 2017-11-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108340480A (en) * | 2018-01-24 | 2018-07-31 | 浙江大学 | A method of utilizing carbon dioxide step mineralising curing concrete building block |
| CN112060312A (en) * | 2020-08-21 | 2020-12-11 | 芜湖市中天管桩股份有限公司 | Steam conveying device for tubular pile steam curing |
| CN112356260A (en) * | 2020-10-31 | 2021-02-12 | 宁乡宁华新材料有限公司 | Production method of high-strength tubular pile |
| CN113701511A (en) * | 2021-08-03 | 2021-11-26 | 华新水泥股份有限公司 | Method for preparing building material by utilizing waste heat power generation of cement plant |
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| CN105599128A (en) * | 2016-02-29 | 2016-05-25 | 周兆弟 | Fully-automatic tubular pile production line |
| CN105645714A (en) * | 2015-12-31 | 2016-06-08 | 杭州隽琛环保有限公司 | Device and method for treating sludge through desiccation and carbonization combined method by utilizing steam of thermal power plant |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108340480A (en) * | 2018-01-24 | 2018-07-31 | 浙江大学 | A method of utilizing carbon dioxide step mineralising curing concrete building block |
| CN112060312A (en) * | 2020-08-21 | 2020-12-11 | 芜湖市中天管桩股份有限公司 | Steam conveying device for tubular pile steam curing |
| CN112060312B (en) * | 2020-08-21 | 2022-04-26 | 建华建材(芜湖)有限公司 | Steam conveying device for tubular pile steam curing |
| CN112356260A (en) * | 2020-10-31 | 2021-02-12 | 宁乡宁华新材料有限公司 | Production method of high-strength tubular pile |
| CN113701511A (en) * | 2021-08-03 | 2021-11-26 | 华新水泥股份有限公司 | Method for preparing building material by utilizing waste heat power generation of cement plant |
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