CN1342611A - Process for preparing granular calcium chloride and its sphericizing granulator - Google Patents
Process for preparing granular calcium chloride and its sphericizing granulator Download PDFInfo
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- CN1342611A CN1342611A CN 01141607 CN01141607A CN1342611A CN 1342611 A CN1342611 A CN 1342611A CN 01141607 CN01141607 CN 01141607 CN 01141607 A CN01141607 A CN 01141607A CN 1342611 A CN1342611 A CN 1342611A
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- calcium chloride
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Abstract
A process for preparing granular calcium chloride and its spheriodizing granulation bed includes such steps as washing raw liquid preheating, evaporating, granulating in spheroidizing granulartion bed, baking and cooling. The spheroidizing granulation bed is composed of feeder, spherioidizing rollers with rib plates and orifice plate. Its advantages include low energy consumption, high efficiency and high spheroidizing level.
Description
TECHNICAL FIELD OF THE INVENTION:
The invention belongs to a kind of production technique and equipment of inorganic salt calcium chloride, particularly a kind of production technique of granular calcium chloride and spheroidic granulating bed thereof.
Background technology of the present invention:
At present, the calcium chloride that domestic production is sold all is flaky, and the granular calcium chloride of minute quantity also is after passing through pulverizing with flaky (the thick about 2-4.5mm of sheet), sieves and makes.It is to make with the spraying bonded pelleting that a spot of granular calcium chloride is also arranged.And spraying bonded pelleting shower nozzle is easy to stop up, and makes the atomizing effect difference and the cleaning of stopping; The vane hole charging granulation of tower in addition bottom removes limit, vane hole " long-snouted " and often causes feed-pipe to stop up; The product spheroidization is bad; And in order to atomize and two kinds of high-temperature gases of dry employing, a kind of is the high temperature atomization gas, and a kind of is the high-temperature stream gasification, and heat exchange efficiency is low, and needs particle size after cracking unacceptable product even salable product in order to produce a large amount of crystal seeds.Therefore above two kinds of methods production granular calcium chloride energy consumption is too high, and production efficiency is low, and bonded pelleting production calcium chloride content is non-adjustable, and spheroidization is relatively poor, and outward appearance is not beautiful, so there is not the big area promotional value.
Technology contents of the present invention:
Technical problem to be solved by this invention is: granular calcium chloride continuous industry production in enormous quantities problem, and solve the used specific equipment of production granular calcium chloride.The invention provides a kind of production technique and spheroidic granulating bed thereof of granular calcium chloride.And this technology and equipment energy consumption are low, the efficient height, and calcium chloride particle spheroidization is good.
Technical solution of the present invention is as follows:
The technological process of production of granular calcium chloride is: the liquid calcium chloride that with concentration is 40-84% washs the warm air of carrying the calcium chloride dust secretly in fluidizing drying bed (15) through washing tower (14), reclaims wherein liquid calcium chloride and preheating; Be preheated to 80-90 ℃ through preheater (16) again, being evaporated to concentration through vaporizer (17), separator (18) again is 55-62%, again after vaporizer (19), storage tank (20) are evaporated to concentration and are 68-72%, enter the feeding trough (4) of spheroidic granulating bed (21) as feed liquid, through the spheroidic granulating bed granulation, drying bed (15), cooler (22), sieve apparatus (23) are laggard again goes into feed bin (24) for the granular calcium chloride of output, promptly make granular calcium chloride.
Vaporizer can be the vaporizer that rises forms such as film, falling liquid film, board-like, tubulation or corrugated tube, evaporates under normal pressure or vacuum state.
The structure of spheroidic granulating bed is, adorning support (2) at an end of granulating bed housing (1), adorning feeding trough (4) by central shaft (3) frame on the support with heat insulation sheath, the oblique below of feeding trough is discharge port (5), adorning the spheroidic roll (6) that is connected with transmission system in the granulating bed housing of this end, spheroidic roll is corresponding with discharge port, in the spheroidization roller thermal source is arranged, installing gusset (7) vertically at the roller cylindrical, adorning the bottom outlet plate (8) and the side opening plate (9) of ventilation hole on the granulating bed housing, waste gas outlet (10) is arranged at the other end top of granulating bed housing, and be connected with induced draft fan (13) with washing tower (12), granular calcium chloride outlet (11) is arranged at the bottom.
The spheroidic roll of spheroidic granulating bed is a round shape, its external diameter is Φ 18～6800mm, axially the shape of gusset can be circular, its diameter is Φ 1～68mm, also can be rectangle, its cross section be 1mm * 1mm～888mm * 999mm, also can be any irregular section of trilateral, rhombus, trapezoidal or above combination of shapes, it highly is 1～999mm, along excircle gusset spacing from 1～800mm.
The bottom outlet plate (8) of spheroidic granulating bed and the percentage of open area of side opening plate (9) are 3～85%.The air inducing amount of induced draft fan can be at 100m
3/ h～80 * 10
8m
3/ h.
The granulation process of liquid calcium chloride in spheroidic granulating bed is, calcium chloride fluid column under gusset on the spheroidic roll send the feeding trough discharge port interrupts, and throw in the air according to the linear velocity of spheroidic roll muscle cylindrical, drop relies on oneself viscosity and surface tension to be condensed into round shaped grain aloft, prolong the condensation skyborne residence time of round shaped grain from the cold wind of bottom outlet plate and the feeding of side opening plate, guarantee that drop fully solidifies.Bottom outlet plate and side opening plate installation site and percentage of open area can guarantee wind direction and at full speed, and gas speed is 0.5-120m/s, and aloft the residence time can make round shaped grain fully solidify from 0.2 second-18 seconds thereby prolong the condensation round shaped grain.
This spheroidic granulating bed and production technique can be used in the production of the bigger inorganics of various viscosity, organism, macromolecular material or the biochemical product boiling point product close with the freezing point temperature interval.
The present invention compared with prior art has following advantage:
1, product spheroidization of the present invention is good, and common product is granular at 2.5-3.5mm, and content can be adjusted in the residence time in the drying bed according to market demands by blast 80 ℃-360 ℃ warm air in fluidizing drying bed, produces the granular calcium chloride of different content.
2, the present invention can realize continuous mass industrialized production.Production equipment special charging liquid measure is big, steam tracing is arranged, do not have easily stifled position such as obstruction, no nozzle, vane, can realize continuous mass industrialized production, the production efficiency height.
3, energy consumption of the present invention is low, the efficient height.The technological process of production of the present invention is short, and granulation does not need any crystal seed, and its energy consumption is half of bonded pelleting energy consumption.
4, the content of product calcium chloride of the present invention is adjustable.Content of the present invention all can be produced at the product of 74%-99%, and the added value height.
5, good product mobility of the present invention, surface area ratio is big, the fast wide accommodation of dissolution rate.
6, present device and technology can be used in the production of the bigger inorganics of any viscosity, organism, macromolecular material or the biochemical product boiling point product close with the freezing point temperature interval.
Description of drawings of the present invention:
Fig. 1 is the structural representation of spheroidic granulating bed of the present invention;
Fig. 2 is granular calcium chloride technological process of production figure of the present invention.
The specific embodiment of the present invention is as follows:
Produce 74% granular calcium chloride
The structure of spheroidic granulating bed as shown in Figure 1, adorning support (2) at an end of granulating bed housing (1), adorning feeding trough (4) by central shaft (3) frame on the support with heat insulation sheath, the oblique below of feeding trough is discharge port (5), adorning round shape spheroidic roll (6) in the granulating bed housing of this end, spheroidic roll is corresponding with discharge port, and the external diameter of spheroidic roll is Φ 180mm.The shape spheroidic roll is connected with transmission system, linear velocity V=10.5～11m/s.Be connected with steam deep fat companion heat in the spheroidic roll.Installing gusset (7) vertically at the roller cylindrical, adorning the bottom outlet plate (8) and the side opening plate (9) of ventilation hole on the granulating bed housing, waste gas outlet (10) is arranged at the other end top of granulating bed housing, granular calcium chloride outlet (11) is arranged at the bottom, granulating bed outer be provided with washing tower (12) and induced draft fan (13).The shape of gusset is circular, and its diameter is a Φ 15mm round steel, and height is 15mm, and spacing is 278mm.The percentage of open area of bottom outlet plate (8) and side opening plate (9) is 58%, and gas speed is at 14m/s, and the prolongation drop is 1.8 seconds residence times aloft, and the assurance drop is met the freezing air condensation and fully solidified in bed.The amount of air entrainment of induced draft fan is 18000m
3/ h.
The technological process of production of granular calcium chloride as shown in Figure 2, the solution (representing) that will contain the about 38-40% of calcium chloride with thick dashed line, wash through washing tower (14), and be fluidized and enter tubular heat exchanger (16) after wind (representing) preheating of drawing in the drying bed (15) and be preheated to 80 ℃-85 ℃ with fine line, enter then and rise film atmospheric evaporation device (17), temperature is 128 ℃-132 ℃.Directly enter separator (18) from vaporizer (17) top; In separator, enter falling-film evaporator (19) according to drop behind the shwoot and carry out negative pressure evaporation, vacuum tightness is-0.065-0.08Mpa, temperature is 135-145 ℃, enter calcium liquid storage tank (20) at last and proceed vacuum-evaporation, vacuum tightness enters insulation feeding trough (4) during for-0.06-0.08Mpa, temperature to 170 ℃-175 ℃, enters through feeding trough and makes (21) granulation of material bed.Fluid column under gusset on the spheroidic roll send feeding trough interrupts, and throw in the air according to the linear speed of spheroidic roll muscle cylindrical, the cold wind that enters from side opening plate (9) and bottom outlet plate (8), make drop rely on oneself viscosity and surface tension to be condensed into round shaped grain aloft, and the position of orifice plate and percentage of open area guarantee that interior wind direction of bed and wind speed make the condensation round shaped grain prolong the residence time aloft, make it fully be solidified into granular calcium chloride.Granular calcium chloride (representing with heavy line) drying bed (15) is dried to 74%, again through cooler (22), sieve apparatus (23), can enter cooling feed bin (24), and temperature is reduced to about 55 ℃, can pack warehouse-in.
After testing, the calcium chloride particle diameter is Φ 2.5～3.5mm; Calcium chloride content is 74%.
Produce 86% granular calcium chloride
The structure of spheroidic granulating bed and embodiment 1 are same, and the diameter of its central roll is Φ 600mm, and the shape of gusset is a trilateral, and being of a size of the base is 2.8mm, and height is 2.6mm, and spacing is 380mm; The percentage of open area of bottom outlet plate (8) and side opening plate (9) is 28%; The air inducing amount of induced draft fan is 18000m
3/ h.
The technological process of production of granular calcium chloride as shown in Figure 2, the solution (representing with thick dashed line) that will contain the about 38-40% of calcium chloride adds the about 7.5-8 of hydrochloric acid adjustment pH value of an amount of about 5-7%, through the about 3.5-4 of settling tank sedimentation hour, husky filter box filters the laggard board-like preheater (16) of going into, be preheated to 85 ℃, enter board-like vacuum evaporator (17), vacuum tightness is 0.065-0.075Mpa, when temperature is 140-145 ℃, enter separator (18) by the vaporizer top, behind shwoot, enter falling liquid film vacuum evaporator (19), vacuum tightness is 0.065-0.075Mpa, when temperature is 145-155 ℃, enters and enter granulating bed (21) granulation when calcium liquid storage tank (20) continues negative pressure evaporation to 172-175 ℃.Granulation process and embodiment 1 are together.Granular calcium chloride (representing with heavy line) enters fluidizing drying bed (15), stops about 5.5 minutes in bed, through cooler (22), sieve apparatus (23), can enter cooling feed bin (24), gets final product through cooling packing.
After testing, the calcium chloride particle diameter is φ 2.5-3.5mm; Calcium chloride content about 86%.
Produce 96% granular calcium chloride
The structure of spheroidic granulating bed and embodiment 1 are same, and the diameter of its central roll is Φ 380mm, and the shape of gusset is a φ 18mm round steel, and height is 18mm, and spacing is 260mm.The percentage of open area of bottom outlet plate (4) and side opening plate (5) is 58%; The air inducing amount of induced draft fan is 12000m
3/ h.
The technological process of production of granular calcium chloride as shown in Figure 2, the solution (representing with thick dashed line) that will contain the about 38-40% of calcium chloride is analysed salt through being refrigerated to subzero 25～30 ℃ of insulations, NaCl content is reduced to below 0.5%, enter washing tower (14) washing, the waste gas (representing with fine line) of drawing from fluidizing drying bed (15) enters washing tower, and reclaims calcium chloride wherein; Enter ripple tubular type preheater (16) then and be preheated to 82～85 ℃, enter and rise film negative pressure steaming device (17) evaporation, its vacuum tightness is 0.065～0.075Mpa, when temperature is controlled at 135～140 ℃, behind the shwoot of climbing-film evaporator (18) top, enter efficient rotor segment thin-film evaporator (19) according to drop, 150～170 ℃ of temperature, negative pressure 0.07～0.08Mpa, the following outlet of flash evaporator links to each other with calcium liquid storage tank (20) and proceeds negative pressure evaporation, concentration increases to about 72%, enter granulating bed (21) granulation in the time of the about 175-178 of temperature ℃, granulation process and embodiment 1 are together.Granular calcium chloride (representing with heavy line), can enter cooling feed bin (24) cooling back packing and get final product through cooler (22), sieve apparatus (23) through fluidised bed drying bed (15) drying.
After testing, the calcium chloride mean particle size is φ 3mm; Calcium chloride content 96%.
Claims (9)
1, a kind of production technique of granular calcium chloride, it is characterized in that: technical process is: the liquid calcium chloride that with concentration is 40-84% washs the warm air of carrying the calcium chloride dust secretly in fluidizing drying bed (15) through washing tower (14), reclaims wherein liquid calcium chloride and preheating; Be preheated to 80-90 ℃ through preheater (16) again, being evaporated to concentration through vaporizer (17), separator (18) again is 55-62%, again after vaporizer (19), storage tank (20) are evaporated to concentration and are 68-72%, enter the feeding trough (4) of spheroidic granulating bed (21) as feed liquid, through the spheroidic granulating bed granulation, drying bed (15), cooler (22), sieve apparatus (23) are laggard again goes into feed bin (24) for the granular calcium chloride of output, promptly make granular calcium chloride.
2, according to the said production technique of claim 1, it is characterized in that: vaporizer can be the vaporizer that rises forms such as film, falling liquid film, board-like, tubulation or corrugated tube, evaporates under normal pressure or vacuum state.
3, as spheroidic granulating bed special-purpose in the said production technique of claim 1, it is characterized in that: the structure of spheroidic granulating bed is, adorning support (2) at an end of granulating bed housing (1), adorning feeding trough (4) by central shaft (3) frame on the support with heat insulation sheath, the oblique below of feeding trough is discharge port (5), adorning the spheroidic roll (6) that is connected with transmission system in the granulating bed housing of this end, spheroidic roll is corresponding with discharge port, in the spheroidization roller thermal source is arranged, installing gusset (7) vertically at the roller cylindrical, adorning the bottom outlet plate (8) and the side opening plate (9) of ventilation hole on the granulating bed housing, waste gas outlet (10) is arranged at the other end top of granulating bed housing, and be connected with induced draft fan (13) with washing tower (12), granular calcium chloride outlet (11) is arranged at the bottom.
4, according to the said spheroidic granulating bed of claim 3, it is characterized in that: spheroidic roll is a round shape, its external diameter is Φ 18～6800mm, axially the shape of gusset can be circular, and its diameter is Φ 1～68mm, also can be rectangle, its cross section is 1 mm * 1mm～888mm * 999mm, also can be any irregular section of trilateral, rhombus, trapezoidal or above combination of shapes, it highly be 1～999mm, along excircle gusset spacing from 1～800mm.
5, according to the said spheroidic granulating bed of claim 3, it is characterized in that: the percentage of open area of bottom outlet plate (8) and side opening plate (9) is 3～85%.
6, according to the said spheroidic granulating bed of claim 3, it is characterized in that: induced draft fan air inducing amount can be at 100m
3/ h～80 * 10
8m
3/ h.
7, according to the production technique of the said granular calcium chloride of claim 1, it is characterized in that: the granulation process of liquid calcium chloride in spheroidic granulating bed is that the calcium chloride fluid column under the gusset on the spheroidic roll send the feeding trough discharge port interrupts, and throw in the air according to the linear velocity of spheroidic roll muscle cylindrical, drop relies on oneself viscosity and surface tension to be condensed into round shaped grain aloft, prolong the condensation skyborne residence time of round shaped grain from the cold wind of bottom outlet plate and the feeding of side opening plate, make it abundant curing.
8, as the said production technique of claim 1, it is characterized in that: this technology can be used in the production of the bigger inorganics of various viscosity, organism, macromolecular material or the biochemical product boiling point product close with the freezing point temperature interval.
9, as the said spheroidic granulating bed of this claim 3, it is characterized in that: this is granulating bed to can be used in the production of the interval close product of the bigger inorganics of various viscosity, organism, macromolecular material or biochemical product boiling point and freezing point temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011416076A CN1137051C (en) | 2001-09-28 | 2001-09-28 | Process for preparing granular calcium chloride and its sphericizing granulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011416076A CN1137051C (en) | 2001-09-28 | 2001-09-28 | Process for preparing granular calcium chloride and its sphericizing granulator |
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| Publication Number | Publication Date |
|---|---|
| CN1342611A true CN1342611A (en) | 2002-04-03 |
| CN1137051C CN1137051C (en) | 2004-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011416076A Expired - Fee Related CN1137051C (en) | 2001-09-28 | 2001-09-28 | Process for preparing granular calcium chloride and its sphericizing granulator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898777A (en) * | 2010-07-06 | 2010-12-01 | 北京航天动力研究所 | Device for producing calcium chloride dihydrate by taking waste gas as heat source and method thereof |
| CN101367537B (en) * | 2008-09-12 | 2011-06-22 | 青海金锋实业有限公司 | Novel process for preparing spherical calcium chloride with spray of rotary kiln |
| CN104445336A (en) * | 2013-09-18 | 2015-03-25 | Gea梅索有限责任公司 | Method and apparatus for producing pure CaCl2 crystal |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295153C (en) * | 2004-07-14 | 2007-01-17 | 淄博齐鲁乙烯化工有限公司 | Fluidized production process for granular calcium chloride |
| KR102330802B1 (en) * | 2019-12-26 | 2021-11-24 | 주식회사 무한 | Flake type calcium chloride drying device of liquid calcium chloride using a shell and Flake type calcium chloride manufacturing method |
-
2001
- 2001-09-28 CN CNB011416076A patent/CN1137051C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367537B (en) * | 2008-09-12 | 2011-06-22 | 青海金锋实业有限公司 | Novel process for preparing spherical calcium chloride with spray of rotary kiln |
| CN101898777A (en) * | 2010-07-06 | 2010-12-01 | 北京航天动力研究所 | Device for producing calcium chloride dihydrate by taking waste gas as heat source and method thereof |
| CN101898777B (en) * | 2010-07-06 | 2012-08-08 | 北京航天动力研究所 | Device for producing calcium chloride dihydrate by taking waste gas as heat source and method thereof |
| CN104445336A (en) * | 2013-09-18 | 2015-03-25 | Gea梅索有限责任公司 | Method and apparatus for producing pure CaCl2 crystal |
| CN104445336B (en) * | 2013-09-18 | 2018-07-03 | Gea梅索有限责任公司 | Pure CaCl2The production method and equipment of crystallization |
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| Publication number | Publication date |
|---|---|
| CN1137051C (en) | 2004-02-04 |
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