CN103539080A - Continuous preparation method of medium-content insoluble sulfur - Google Patents
Continuous preparation method of medium-content insoluble sulfur Download PDFInfo
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- CN103539080A CN103539080A CN201310546645.0A CN201310546645A CN103539080A CN 103539080 A CN103539080 A CN 103539080A CN 201310546645 A CN201310546645 A CN 201310546645A CN 103539080 A CN103539080 A CN 103539080A
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Abstract
The invention relates to a preparation method and specifically discloses a continuous preparation process of medium-content insoluble sulfur. The continuous preparation method comprises the following steps of carrying out high-temperature gasification on liquid sulfur in a gasifying step to obtain gas-state sulfur; carrying out quenching polymerization onto the gas-state sulfur in a cold-polymerizing and pelletizing step, and extruding and pelletizing the polymerized sulfur to obtain cylindrical particles; carrying out high-temperature ageing on the cylindrical particles in an ageing and drying step, and drying the aged cylindrical particles; and screening the dried cylindrical particles in a crushing and screening process to obtain finished products. A cyclone bag is adopted for collecting dust and carrying out solid-gas separation on the tail gas, so that dust-free tail gas reaches standards and is exhausted. The continuous preparation method disclosed by the invention realizes continuity of insoluble sulfur production, improves operation environment, lowers labor intensity of a worker, saves production cost and improves high-temperature stability of the product.
Description
Technical field
The present invention relates to a kind of preparation method, particularly a kind of continuous production method of middle content insoluble sulfur.
Background technology
Insoluble sulfur is a kind of nontoxic, flammable yellow powder, because it is insoluble to rubber, gains the name.Insoluble sulfur is to be made by common sulphur polymerization, and middle content insoluble sulfur refers to that the ratio of insoluble sulfur content in total sulfur is in 65% left and right.
At present, in preparation both at home and abroad, the general technology flow process of content insoluble sulfur is: first by liquid sulfur high-temperature gasification; Then chilling quenches gaseous sulfur; Compressing tablet granulation again; Then by cylindrical particle insoluble sulfur washing, dry; Final curing is pulverized.There is following defect in the preparation method of traditional middle content insoluble sulfur: quenching chilling and compressing tablet two procedures complete in different production units, the labour intensity that this discontinuous technical process has not only increased workman is large, improved production cost high, and had a strong impact on the quality of product, increased the unstable of product; After adopting washing in simultaneously traditional preparation method, be dried, such operation causes drying effect bad again; The curing pulverizing of finally carrying out, not through the processing of gathering dust of screening and tail gas, has affected the quality of product, and environment is produced to serious pollution.
Summary of the invention
A kind of continuous production method that the object of this invention is to provide middle content insoluble sulfur, the method can solve the problem in background technology, can continuous production in content insoluble sulfur, reduced workman's labour intensity, guaranteed the quality of product.
The scheme that the present invention adopts is: a kind of continuous production method of middle content insoluble sulfur, the technique comprising is that gasification, quenching, granulation, ageing are dry and crush and screen successively, it is characterized in that, in quenching, granulation process step, adopt quenching granulation equipment integrating, described quenching granulation equipment integrating top is quenching portion, and bottom is extrusion molding portion;
First the liquid sulfur in liquid sulfur pit is delivered to vapourizing furnace by the quantitative level pressure of pump of constant delivery type, forms gaseous sulfur;
By stablizing liquid bath, stable liquid is supplied in described quenching granulation equipment integrating via transferpump, the quenching portion that again gaseous sulfur is injected to the quenching granulation equipment integrating that the is full of stable liquid cold polymerization of having to go to the toilet, gaseous sulfur after chilling polymerization transfers the extrusion molding portion that polymerised sulphur sinks to quenching granulation equipment integrating to, be squeezed into herein cylindrical particle and cylindrical particle is placed in to ageing tank carries out high temperature ageing, through the cylindrical particle of high temperature ageing, enter separation dryer separated dry;
Finally putting dried cylindrical particle into pulverizer pulverizes, pulverizer tail gas is linked into dust-precipitator and carries out solid and gas separation, separated dustless gas environment protection emission, separated solid particulate and pulverize after product introduction to sieve apparatus, sieve that to make product be middle content insoluble sulfur.
Preferred: in gasification step, to adopt liquid sulfur pit, pump of constant delivery type and vapourizing furnace; In ageing drying step, adopt ageing tank and separation dryer; Crush and screen and in step, adopt pulverizer, dust-precipitator and sieve apparatus.
Preferred: the pressure-controlling of above-mentioned pump of constant delivery type is in the scope of 0.6-1.2MPa; The temperature of vapourizing furnace is controlled at 600-620 ℃; Stable liquid is mixed by water, nitric acid, iron trichloride; The temperature-stable of the chilling polymerization in quenching granulation equipment integrating is controlled at 40 ℃-80 ℃; Aging Temperature is controlled at 60 ℃-80 ℃.
Preferred: the separation dryer in above-mentioned ageing drying step adopts rotating cylinder vacuum separation drying machine, and drying temperature is controlled at 50 ℃-80 ℃, and vacuum pressure is controlled at 0.02-0.08MPa.
The preparation method that the present invention adopts is the improvement to content insoluble sulfur traditional technology in producing, cancelled the backward technique of the compressing tablet of additionally beginning to pratise, chilling is quenched and united two into one with extruder grain, realized the continuity that middle content insoluble sulfur is produced, and adopt the dry method of ageing, and also improved operating environment, reduced labor strength, save production cost, improved the high-temperature stability of product.
Accompanying drawing explanation
Fig. 1, FB(flow block) of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred scheme, specific embodiments of the invention are done to further detailed introduction.
As shown in Figure 1, be FB(flow block) of the present invention, a kind of continuous production method of middle content insoluble sulfur, the method comprises four large steps, the one, gasification step, the 2nd, quenching granulation step, the 3rd, ageing drying step, the 4th, crush and screen step.Wherein in gasification step, adopting liquid sulfur pit, pump of constant delivery type and vapourizing furnace, is that liquid sulfur is quantitatively gasified and obtains gaseous sulfur; In quenching granulation step, adopt quenching granulation equipment integrating, stablize liquid bath and transferpump, be by the fast-cooling continuous polymerization of gaseous sulfur, and make cylindrical particle insoluble sulfur; In ageing drying step, adopting ageing tank and separation dryer, is that the continuous ageing of cylindrical particle insoluble sulfur is separated dry; Crushing and screening in step and adopt pulverizer, cyclone cloth bag dust collector and sieve apparatus, is that dry cylindrical particle insoluble sulfur is pulverized continuously and sieved and gather dust, and finally obtains satisfactory middle content insoluble sulfur.
Embodiment: first the liquid sulfur of placing in liquid sulfur pit is delivered to vapourizing furnace by the quantitative level pressure of pump of constant delivery type, the pressure of pump of constant delivery type is 0.9MPa, liquid sulfur High Temperature Gas through 610 ℃ in vapourizing furnace changes into gaseous sulfur; Then by stablizing liquid bath, the stable liquid being mixed by water, nitric acid, iron trichloride is supplied in quenching granulation equipment integrating via transferpump, the quenching portion that the gaseous sulfur upper step being obtained is injected to the quenching granulation equipment integrating that the is full of stable liquid cold polymerization of having to go to the toilet, the temperature of chilling polymerization is 60 ℃, gaseous sulfur after chilling polymerization transfers the extrusion molding portion that polymerised sulphur sinks to quenching granulation equipment integrating to, is squeezed into cylindrical particle; The cylindrical particle upper step being obtained is placed in ageing tank and carries out the high temperature ageing of 70 ℃, enters rotating cylinder vacuum separation drying machine separated dry through the cylindrical particle of high temperature ageing, and drying temperature is 65 ℃, and vacuum pressure is 0.05MPa; Finally putting dried cylindrical particle into pulverizer pulverizes, pulverizer tail gas is linked into cyclone cloth bag dust collector and carries out solid and gas separation, separated dustless gas environment protection emission, the product introduction after separated solid particulate and pulverizing sieves and makes the middle content insoluble sulfur product of content between 60%-68% to sieve apparatus.
Claims (7)
1. the continuous production method of content insoluble sulfur in a kind, the technique comprising is that gasification, quenching, granulation, ageing are dry and crush and screen successively, it is characterized in that: in quenching, granulation process step, adopt quenching granulation equipment integrating, described quenching granulation equipment integrating top is quenching portion, and bottom is extrusion molding portion;
First the liquid sulfur in liquid sulfur pit is delivered to vapourizing furnace by the quantitative level pressure of pump of constant delivery type, forms gaseous sulfur;
By stablizing liquid bath, stable liquid is supplied in described quenching granulation equipment integrating via transferpump, the quenching portion that again gaseous sulfur is injected to the quenching granulation equipment integrating that the is full of stable liquid cold polymerization of having to go to the toilet, gaseous sulfur after chilling polymerization transfers the extrusion molding portion that polymerised sulphur sinks to quenching granulation equipment integrating to, is squeezed into herein cylindrical particle;
Cylindrical particle is placed in to ageing tank and carries out high temperature ageing, through the cylindrical particle of high temperature ageing, enter separation dryer separated dry;
Finally putting dried cylindrical particle into pulverizer pulverizes, pulverizer tail gas is linked into dust-precipitator and carries out solid and gas separation, separated dustless gas environment protection emission, separated solid particulate and pulverize after product introduction to sieve apparatus, sieve that to make product be middle content insoluble sulfur.
2. the continuous production method of middle content insoluble sulfur according to claim 1, is characterized in that: in gasification step, adopt liquid sulfur pit, pump of constant delivery type and vapourizing furnace; In ageing drying step, adopt ageing tank and separation dryer; Crush and screen and in step, adopt pulverizer, dust-precipitator and sieve apparatus.
3. the continuous production method of middle content insoluble sulfur according to claim 1, is characterized in that: the pressure-controlling of described pump of constant delivery type is in the scope of 0.6-1.2MPa.
4. the continuous production method of middle content insoluble sulfur according to claim 1, is characterized in that: the temperature of described vapourizing furnace is controlled at 600-620 ℃.
5. the continuous production method of middle content insoluble sulfur according to claim 1, is characterized in that: described stable liquid is mixed by water, nitric acid, iron trichloride, and the temperature-stable of the chilling polymerization in quenching granulation equipment integrating is controlled at 40 ℃-80 ℃.
6. the continuous production method of middle content insoluble sulfur according to claim 1, is characterized in that: described Aging Temperature is controlled at 60 ℃-80 ℃.
7. the continuous production method of middle content insoluble sulfur according to claim 1, it is characterized in that: the separation dryer in described ageing drying step adopts rotating cylinder vacuum separation drying machine, drying temperature is controlled at 50 ℃-80 ℃, and vacuum pressure is controlled at 0.02-0.08MPa.
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| CN201310546645.0A CN103539080A (en) | 2013-11-07 | 2013-11-07 | Continuous preparation method of medium-content insoluble sulfur |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106145057A (en) * | 2015-03-23 | 2016-11-23 | 山东尚舜化工有限公司 | A kind of production method of high quality insoluble sulphur |
| CN107324289A (en) * | 2017-09-01 | 2017-11-07 | 上海京海（安徽）化工有限公司 | The production technology of grade insoluble sulphur in prepared by watery fusion method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1539728A (en) * | 2003-04-24 | 2004-10-27 | 强 刘 | One-step method for preparing insolubility sulfur |
| CN101367506A (en) * | 2008-09-16 | 2009-02-18 | 无锡市华盛化工助剂厂 | Method for preparing insoluble sulfur |
| CN102167292A (en) * | 2011-02-01 | 2011-08-31 | 无锡市华盛化工助剂厂 | Equipment and method for producing medium-grade insoluble sulfur with continuous ageing method |
-
2013
- 2013-11-07 CN CN201310546645.0A patent/CN103539080A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1539728A (en) * | 2003-04-24 | 2004-10-27 | 强 刘 | One-step method for preparing insolubility sulfur |
| CN101367506A (en) * | 2008-09-16 | 2009-02-18 | 无锡市华盛化工助剂厂 | Method for preparing insoluble sulfur |
| CN102167292A (en) * | 2011-02-01 | 2011-08-31 | 无锡市华盛化工助剂厂 | Equipment and method for producing medium-grade insoluble sulfur with continuous ageing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106145057A (en) * | 2015-03-23 | 2016-11-23 | 山东尚舜化工有限公司 | A kind of production method of high quality insoluble sulphur |
| CN107324289A (en) * | 2017-09-01 | 2017-11-07 | 上海京海（安徽）化工有限公司 | The production technology of grade insoluble sulphur in prepared by watery fusion method |
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Application publication date: 20140129 |