CN102580403B - Method for manufacturing high-temperature gas-solid separation ceramic filter pipe - Google Patents
Method for manufacturing high-temperature gas-solid separation ceramic filter pipe Download PDFInfo
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- CN102580403B CN102580403B CN201110001904.2A CN201110001904A CN102580403B CN 102580403 B CN102580403 B CN 102580403B CN 201110001904 A CN201110001904 A CN 201110001904A CN 102580403 B CN102580403 B CN 102580403B
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- solid separation
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Abstract
The invention relates to an improved method for manufacturing a high-temperature gas-solid separation ceramic filter pipe. The method is characterized in that a pipe body and a suspended head are respectively manufactured by using a filter pipe support body; and the non-blind-hole end of the burned pipe body is cut in regular length and then assembled with the suspended head. The filter pipe not only has good uniformity in length and size, but also has good uniformity in effective filtering length and can meet the design demand; moreover, the suspended head is separately manufactured without deflection, so that the uniform wall thickness of the head and the high rate of finished products satisfying the design demand are ensured and 100% of the rate of the finished products after burning can be ensured. The filter pipe body needs the support body and a coating to be burned twice, so that the filter pipe body is separately manufactured and processed in regular length and then assembled with the ceramic head without additional burning operation. In addition, the weight, the pressure operation and the backflushing stress of the filter pipe are centralized at the suspended head; the head is separately molded and favorably made of a denser material, so that the suspension strength is improved and the service life of the filter pipe is favorably prolonged.
Description
Technical field
The present invention is the improvement to method for manufacturing high-temperature gas-solid separation, and particularly relating to one, to prepare yield rate high, can guarantee effective Filter length, manufacture simple method for preparing ceramic filter tube.
Background technology
Integrated coal gasification combined cycle technology (IGCC), because heat utilization rate is high, soot emissions are almost 0 and are favored.Wherein coal combustion hot air cleaning high temperature gas-solid separation ceramic filter tube is crucial in this technique and important core element.Screen pipe structure is, be about about 1500mm (what have is even longer), wherein one has the suspension head of expansion, and the other end is the hollow elongated tubular (Fig. 1) having Blind locating holes, and assembling mode adopts suspended structure.For guaranteeing effective filtration flux and installation, exchange versatility, require very strict to length dimension.
But ceramic product is burnt till by moulded pottery not yet put in a kiln to bake, although moulded pottery not yet put in a kiln to bake size is controlled before entering kiln, can make according to designing requirement fixed length, objectively due to many factors, the shaping moisture content of such as moulded pottery not yet put in a kiln to bake, rate of drying, environment temperature, humidity, fiery temperature and temperature retention time etc. is stopped when burning till, they can not be identical, actual high temperature is made to burn till contraction (change in size) uncontrollable, burn till inevitable size can change, especially lengthwise dimension change, make between each screen pipe obtaining and each batch, can not accomplish that accurate unification as standardized in usual machining product is consistent, job efficiency is not high.
Prior art IGCC ceramic filter tube is all adopt one-shot forming (such as extruded, injection forming), high-temperature firing.Shrink excessive causing scrap for avoiding burning till, usually rule of thumb can only lengthen base substrate, burn till and carry out excision according to reality situation of shrinking and process afterwards, make it to meet design length.And it is higher to dimension precision requirement for installing to hang head, and allowance is less, and excision afterbody mode therefore usually can only be taked to obtain fixed length screen pipe.And screen pipe one end is blind hole structure, after ensureing excision, do not make blind hole break-through scrap, therefore blind hole shutoff can only be moved forward, each screen pipe afterbody block-up position is caused to change thus, cause effective Filter length different in size, especially effectively Filter length shortens, and can not reach the requirement of design filter area, affect filtration flux, even affect whole system and run.In theory, although can, by by end one section of whole shutoff, adopt depth drill to carrying out benefit deep processing, reprocessing blind hole, but one is trouble, adds workload, increase cost, and fragile screen pipe, two is deepen bore inner to there is flying dust, can be blocking microporous, and flying dust also likely enters work system, therefore in fact can not row deep hole machining again, obtain the screen pipe that effective Filter length is unified.Therefore the actual effectively Filter length disunity phenomenon of each screen pipe can not be avoided.If lengthening head sizes carries out cutting to head make its fixed length, filtration pipe shaft is greater than owing to hanging head diameter, usually can only put when burning till to prop up and Head suspension is fired, long head is unsettled to be fired, very easily cause head deflection when burning till, and actual pipe thickness is limited, head deflection is excessive, objectively be difficult to be corrected by processing, and head deflection aft-loaded airfoil corrects, and objectively causes wall unevenness even, hang as easy as rolling off a log in using fracture, therefore actually can only lengthen afterbody, fixed length cutting is carried out to afterbody.Therefore the effective Filter length of screen pipe differs, and part shortens, and becomes inevitable.
In addition, produce once, usually can only adopt material identical with pipe shaft, consider and will meet filtration flux and resistance, material formulation can not adopt high-strength formula, and screen pipe work and recoil cleaning, need bear tens kilograms of impulsive forces, in therefore using, head more easily ruptures and scraps.Above-mentioned deficiency still has the place being worth improving.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provides one can guarantee effective Filter length, effective Filter length uniformity and intermountable good, make simple method for manufacturing high-temperature gas-solid separation.
The object of the invention realizes, and main improvement is separated with hanging head portion by filtration pipe shaft to make, and pipe shaft assembles head after being machined to long dimension by non-blind nose end, thus obtained fixed length of effectively filtering is consistent, the screen pipe that size accurate correspondence is good, overcomes prior art deficiency, realizes the object of the invention.Specifically, method for manufacturing high-temperature gas-solid separation of the present invention, comprises and prepares filter tube support body, apply surface ceramic micro porous coating, it is characterized in that filter tube support body prepares pipe shaft and hanging head portion makes respectively, after burning till pipe shaft non-blind nose end fixed length cutting, head is hung in assembling.
Pipe shaft separates with hanging head portion and makes, until pipe shaft burn till process fixed length by non-blind nose end after assemble head, can two kinds of preparation methods: one is, after making supporter pipe shaft, burning till cutting fixed length, apply face coat and make moulded pottery not yet put in a kiln to bake head, burning till; Two is make shaping pipe shaft respectively and hang head, finally assemble, such as, after making pipe shaft burns till processing fixed length, applying ceramic coating burns till, by the refractory metal head made or the ceramic head burnt till, be sheathed on pipe shaft non-blind nose end, and bond with high temperature resistant binder, radial direction is fixed by pin.The present invention better adopts the former, makes more convenient.Prepared by pipe shaft, same to prior art, can be that employing is extruded, also can adopt injection forming.
Method for manufacturing high-temperature gas-solid separation of the present invention, relative to prior art, make because screen pipe is divided into pipe shaft and head to separate by employing, design fixed length is machined at non-blind nose end after pipe shaft burns till, then head is assembled, make to burn till the excision of contraction pipe shaft fixed length to carry out at non-blind nose end, not only gained screen pipe length dimension uniformity is good, and effectively Filter length uniformity is good, can meet design requirement, and hang head to make separately and deflection can not occur, ensure that head wall thickness uniformity, the yield rate met design requirement is high, can guarantee to burn till rear 100% yield rate.Because screen pipe itself needs supporter and coating twice firing, assemble ceramic head after therefore separately making Processing to length, do not increase and burn till in addition.In addition, screen pipe weight and pressure duty and stressed all the concentrating on of recoil hang head, and head part is split into type, also help head and adopt comparatively dense material to make, thus improve loop strength, are also conducive to extending screen pipe service life.The effective Filter length uniformity of screen pipe of the present invention is good, and head has assembling vestige, for the inventive method is different from two distinguishing characteristics of prior art, by measuring, can dissect and differentiating.
Below in conjunction with an exemplary embodiment; essence of the present invention is understood in exemplary illustration and help further; but embodiment detail is only in order to the present invention is described; do not represent the present invention and conceive lower whole technical scheme; therefore should not be construed as the technical scheme total to the present invention to limit; some are In the view of technical staff; the unsubstantiality not departing from the present invention's design increases and/or changes; such as simply change with the technical characteristic with same or similar technique effect or replace, all belonging to scope.
Accompanying drawing explanation
Fig. 1 is embodiment 1 screen pipe structural representation (the same prior art of structure).
Fig. 2 is embodiment 2 screen pipe structural representation.
Detailed description of the invention
Embodiment 1: see Fig. 1, first make the supporter pipe shaft 1 that length is greater than final fixed length, there are shutoff 3 and Blind locating holes 4 in one end, burn till, by design length requirement cutting non-blind nose end, support pipe shaft surface in fixed length and apply ceramic coating, and make head moulded pottery not yet put in a kiln to bake 2 (pug firing temperature is substantially identical with ceramic capillary coating firing temperature), and dry, burn till.
Embodiment 2: see Fig. 2, as embodiment 1, makes filter tube support body fixed length pipe shaft respectively, applies ceramic coating, burn till; Make the shaping suspension head 5 (refractory metal or Low fire ceramic head) that endoporus is a bit larger tham supporter pipe shaft, fixed length pipe shaft is inserted refractory metal or Low fire ceramic head, and with being greater than the high-temperature agglomerant bonding of operating temperature, radial direction is fixed with pin 6 again.
To those skilled in the art, under this patent design and specific embodiment enlightenment, some distortion that can directly derive from this patent disclosure and general knowledge or associate, those of ordinary skill in the art will recognize also can adopt additive method, or in prior art, commonly use substituting of known technology, and the equivalence of feature changes or modifies, mutual various combination between feature, the change of such as forming method is as adopted injection forming, etc. unsubstantiality change, can be employed equally, this patent representation function and effect can be realized, expansion of illustrating no longer is one by one described in detail, all belong to this patent protection domain.
Without special instruction, in the present invention, " chimney filter supporter " is refer to comprise the full filter pipe supporter hanging head.
Claims (1)
1. method for manufacturing high-temperature gas-solid separation, comprise and prepare filter tube support body, apply surface ceramic micro porous coating, it is characterized in that the preparation of filter tube support body comprises pipe shaft and hanging head portion makes respectively, after burning till pipe shaft non-blind nose end fixed length cutting, apply ceramic coating and make head moulded pottery not yet put in a kiln to bake, burn till, the pug of firing temperature identical with ceramic coating selected by described head moulded pottery not yet put in a kiln to bake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110001904.2A CN102580403B (en) | 2011-01-07 | 2011-01-07 | Method for manufacturing high-temperature gas-solid separation ceramic filter pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110001904.2A CN102580403B (en) | 2011-01-07 | 2011-01-07 | Method for manufacturing high-temperature gas-solid separation ceramic filter pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102580403A CN102580403A (en) | 2012-07-18 |
| CN102580403B true CN102580403B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110001904.2A Expired - Fee Related CN102580403B (en) | 2011-01-07 | 2011-01-07 | Method for manufacturing high-temperature gas-solid separation ceramic filter pipe |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109589712A (en) * | 2019-01-14 | 2019-04-09 | 东华大学 | A kind of ellipse basalt fibre chimney filter and preparation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4885014A (en) * | 1986-05-30 | 1989-12-05 | Schumacher'sche Fabrik Gmbh & Co. Kg | Apparatus for filtering gases |
| CN1081395A (en) * | 1992-07-15 | 1994-02-02 | 国家建筑材料工业局山东工业陶瓷研究设计院 | Gradient ceramics with ceramic fibrous membrane fenestrata |
| US5948257A (en) * | 1996-05-03 | 1999-09-07 | Hexcel Corporation | Candle filter and method for making |
| US6113664A (en) * | 1998-06-08 | 2000-09-05 | Universal Porosics, Inc. | Flange densification for filter candles |
-
2011
- 2011-01-07 CN CN201110001904.2A patent/CN102580403B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4885014A (en) * | 1986-05-30 | 1989-12-05 | Schumacher'sche Fabrik Gmbh & Co. Kg | Apparatus for filtering gases |
| CN1081395A (en) * | 1992-07-15 | 1994-02-02 | 国家建筑材料工业局山东工业陶瓷研究设计院 | Gradient ceramics with ceramic fibrous membrane fenestrata |
| US5948257A (en) * | 1996-05-03 | 1999-09-07 | Hexcel Corporation | Candle filter and method for making |
| US6113664A (en) * | 1998-06-08 | 2000-09-05 | Universal Porosics, Inc. | Flange densification for filter candles |
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| CN102580403A (en) | 2012-07-18 |
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Granted publication date: 20150520 Termination date: 20160107 |