CN101391755A - Catalyst screening method during preparation of sulphuric acid - Google Patents
Catalyst screening method during preparation of sulphuric acid Download PDFInfo
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- CN101391755A CN101391755A CNA2008102334980A CN200810233498A CN101391755A CN 101391755 A CN101391755 A CN 101391755A CN A2008102334980 A CNA2008102334980 A CN A2008102334980A CN 200810233498 A CN200810233498 A CN 200810233498A CN 101391755 A CN101391755 A CN 101391755A
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- catalyst
- screening
- dust
- sulfuric acid
- sieving
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Abstract
The invention discloses a sulfuric acid catalyst screening method, which comprises: the catalyst is placed in a sealed double-layer linear mechanical vibrating screen to be screened level by level and the dusts generated during screening are filtered by a dust catcher; the screened thin catalyst grains and the catalyst dusts collected by the dust catcher are bagged respectively for later recycling. The application of the method can dramatically enhance the work environment and the dust density of the screening work zone is less than 3mg/m<3>, thus effectively protecting the health of workers. The improvement of environment can reduce the investment cost and the total screening cost can be saved by 5 to 10 percent, thus enhancing the economic benefit. The screening time can be dramatically shortened so as to obtain more time for the starting of sulfuric acid apparatus and guarantee smooth completion of the manufacturing task, thus having positive practical meaning and high popularization and application value.
Description
Technical field
The invention belongs to the gas washing in SA production technical field, be specifically related to a kind of method for sieving of sulfuric acid catalyst.
Background technology
At present, in the sulfuric acid catalyst screening, generally adopt at aerofoil fan and blow down, utilize the technology of simple and easy fixed sieve screening, as shown in Figure 1.There is following drawback in this method: screening efficiency is low, mainly shows as catalyzer and dust separation weak effect, carries dust secretly in the catalyzer to be used of screening back.Labour intensity is big, needs artificial rapping compass screen surface in the screening process.Operating area dust content height, high local concentrations :～35g/m
3, reach 1～5g/m from the operating area of screening sieve 5～10m
3, the human body inhalation machine can increase.The working district dust from flying not only pollutes surrounding environment, and can work the mischief to human body.Main active ingredient is a Vanadium Pentoxide in FLAKES in the sulfuric acid catalyst, is the acute poisonous substance of a kind of hypertoxic type, and people's respiratory system and skin is all had detrimental effect.Through sucking, eating or skin contact, easily cause acute poisoning, cause nose, pharynx, lung's irritation, performances such as most workmans have that larynx is itched, dry cough, uncomfortable in chest, general malaise burnout, part patient can cause ephritis, pneumonia.Long-term contact also can cause chronic poisoning, causes bronchitis, renal impairment, visual disorder etc.In addition, because the catalyzer screening effect is poor, had a strong impact on sulfuric acid conversion operation transformation efficiency, system exerts oneself and total utilization efficiency, increases the frequency of turnaround of unit, causes production cost to increase.Though also have indivedual producers to adopt simple roller grizzly sieving technology, as shown in Figure 2, have above-mentioned drawback equally.How to improve the effect of sulfuric acid catalyst screening, the dust pollution when reducing screening has become technical barrier that needs to be resolved hurrily in this field.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of dust pollution, equipment realization sulfuric acid catalyst method for sieving easy, with low cost of can not forming is provided.
Purpose of the present invention is achieved by following technical proposals.
A kind of sulfuric acid catalyst method for sieving, this method may further comprise the steps:
1, catalyzer to be sieved in the sulfuric acid apparatus convertor and porcelain ball are sent in the double-deck straight line moto-vibro screen of sealing in the lump, carried out gradation sizing;
2, the upper strata is that porcelain ball, lower floor are qualified catalyzer after sieving, and bottom is a granules of catalyst in small, broken bits;
3, the dust that produces in the screening process sucks fly-ash separator, dust removal by filtration by the pipe that gathers dust at vibratory screening apparatus top through exhaust blower; The catalyst dust that fly-ash separator is collected packs respectively with the granules of catalyst in small, broken bits of sealing vibratory screening apparatus bottom, recycles separately.
Wherein, described fly-ash separator preferred pulse winding-up unit sack cleaner.
Compared with prior art, the present invention has following beneficial effect:
1. sealing vibratory screening apparatus energy consumption is low, efficient is high, simple in structure, easy-maintaining, easy to operate, full-closed structure do not have dust and overflow and loose, reduce labour intensity and realize automated job.Separate powdered catalyst efficient up to 100%, the qualified pelleted catalyst that screening is come out uses at sulfuric acid production plant, and resistance descends between catalyst layer, make sulfuric acid apparatus operation continous-stable, the operation ratio height, energy consumption is low, the sulphur consumption descends, and device conversion procedure transformation efficiency improves 0.1%.
2. pulse jet unit sack cleaner adopts air intake structure down, and granules of catalyst in small, broken bits directly falls into ash bucket, has effectively protected filter bag, and the filter bag mean lifetime was accumulated at more than 12 months; It is few that efficient height, the secondary of dust adhere to, and effectively reduces equipment energy consumption simultaneously, and the also corresponding reduction of the degree of fatigue of filter bag and pulse valve in the life-span of having improved filter bag and valve block exponentially, has reduced the expense of equipment operation maintenance in a large number; The control of deashing controller realizes automatic ash removing.
3. sieve 5～10m operating area dust concentration less than 3mg/m
3Thereby, significantly improve the operation surrounding enviroment, the protection HUMAN HEALTH is carried out cleaning to enterprise and is carried out production strictly in line with rules and regulations and play promoter action.Environmental improvement brings artificial input cost to reduce, and can save 5～10% screening total expensess, has improved economic benefit.The screening time obviously shortens, and wins sulfuric acid apparatus and drives the time, guarantees that production task finishes smoothly.
4. technical scheme of the present invention need be sieved processing to numerous sulfuric acid apparatus catalyzer, and new thinking is provided, and has active operation significance and application value.
Description of drawings
Fig. 1 is the simple and easy stationary screen sieving technology of the sulfuric acid catalyst of a prior art schema;
Fig. 2 is the simple roller grizzly sieving technology of the sulfuric acid catalyst of a prior art schema;
Fig. 3 is a sulfuric acid catalyst sieving technology schema of the present invention;
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples, but they are not limitation of the invention.
Embodiment 1
As shown in Figure 3, catalyzer and porcelain ball to be sieved in the sulfuric acid apparatus convertor enter in the vibratory screening apparatus of sealing in the lump, carry out gradation sizing.Upper strata, screening back is that porcelain ball, lower floor are qualified catalyzer, and bottom is a granules of catalyst in small, broken bits.The dust that produces in the screening process directly by the pipe that gathers dust at vibratory screening apparatus top, sucks fly-ash separator through blower fan, dust removal by filtration, and clean air directly discharges.The catalyst dust that fly-ash separator is collected packs respectively with the granules of catalyst in small, broken bits of sealing vibratory screening apparatus bottom, recycles separately.
Embodiment 2
Repeat embodiment 1, following difference is arranged: the fly-ash separator that is adopted is a pulse jet unit sack cleaner.
Claims (2)
1, a kind of method for sieving of sulfuric acid catalyst, this method may further comprise the steps:
(1) catalyzer to be sieved in the sulfuric acid apparatus convertor and porcelain ball are sent in the double-deck straight line moto-vibro screen of sealing in the lump, carried out gradation sizing;
(2) upper strata is that porcelain ball, lower floor are qualified catalyzer after sieving, and bottom is a granules of catalyst in small, broken bits;
(3) dust that produces in the screening process sucks fly-ash separator, dust removal by filtration by the pipe that gathers dust at vibratory screening apparatus top through blower fan; The catalyst dust that fly-ash separator is collected packs respectively with the granules of catalyst in small, broken bits of sealing vibratory screening apparatus bottom, recycles separately.
2, method for sieving according to claim 1 is characterized in that: described fly-ash separator is a pulse jet unit sack cleaner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102334980A CN101391755B (en) | 2008-10-28 | 2008-10-28 | Sulphuric acid cCatalyst screening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102334980A CN101391755B (en) | 2008-10-28 | 2008-10-28 | Sulphuric acid cCatalyst screening method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101391755A true CN101391755A (en) | 2009-03-25 |
| CN101391755B CN101391755B (en) | 2010-12-22 |
Family
ID=40492297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102334980A Expired - Fee Related CN101391755B (en) | 2008-10-28 | 2008-10-28 | Sulphuric acid cCatalyst screening method |
Country Status (1)
| Country | Link |
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| CN (1) | CN101391755B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101869890A (en) * | 2010-06-29 | 2010-10-27 | 贵阳中化开磷化肥有限公司 | Method for sieving catalyst in conversion process of sulfuric acid production |
| CN102266849A (en) * | 2011-07-05 | 2011-12-07 | 昆明冶金研究院 | De-dusting type vibrating screen |
| CN107381513A (en) * | 2017-09-14 | 2017-11-24 | 长沙有色冶金设计研究院有限公司 | A kind of high concentration SO2Flue gas temperature control converter and its technique for applying |
-
2008
- 2008-10-28 CN CN2008102334980A patent/CN101391755B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101869890A (en) * | 2010-06-29 | 2010-10-27 | 贵阳中化开磷化肥有限公司 | Method for sieving catalyst in conversion process of sulfuric acid production |
| CN102266849A (en) * | 2011-07-05 | 2011-12-07 | 昆明冶金研究院 | De-dusting type vibrating screen |
| CN107381513A (en) * | 2017-09-14 | 2017-11-24 | 长沙有色冶金设计研究院有限公司 | A kind of high concentration SO2Flue gas temperature control converter and its technique for applying |
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| Publication number | Publication date |
|---|---|
| CN101391755B (en) | 2010-12-22 |
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Granted publication date: 20101222 Termination date: 20111028 |