CN100412036C - Pulp making device for producing compound fertilizer by high tower pelletizing - Google Patents
Pulp making device for producing compound fertilizer by high tower pelletizing Download PDFInfo
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- CN100412036C CN100412036C CNB2006101230843A CN200610123084A CN100412036C CN 100412036 C CN100412036 C CN 100412036C CN B2006101230843 A CNB2006101230843 A CN B2006101230843A CN 200610123084 A CN200610123084 A CN 200610123084A CN 100412036 C CN100412036 C CN 100412036C
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Abstract
The pulping equipment for producing compound fertilizer through high tower pelletizing includes one melting pot with heater and stirrer, one first mixing pot with heater and stirrer, one second mixing pot with stirrer, one first overflow device to communicate the higher melting pot with the first mixing pot, and one second overflow device to communicate the higher first mixing pot with the second mixing pot. It may be used to realize serial low temperature pulping, and has low temperature operation, good pulp flowability, good operation environment, low nitrogen loss and other advantages.
Description
Technical field
The present invention relates to a kind of pulping equipment of compound fertilizer production by tower granulation.
Background technology
The gordian technique of the tower production of composite fertilizer is a pulping process, and in the prior art, high tower compound fertilizer slurrying is with urine after the fusion (or ammonium nitrate liquid) and the solid powder mixed pulp after the preheating of solid heating installation.Urea (or ammonium nitrate) melting plant is hollow twin shaft and blade to be arranged in a kind of, and two bar stirring heating devices of chuck insulation are arranged outward, and establishes coil pipe and distributor in a kind of and keep solid urea to contact with heating unit and do not enter the heating and melting device in molten bath.Because these two kinds of melting devices all are that solid urea contacts with well heater, heat transfer and heat exchange effect are poor, and local material temperature is high, to urea, easily produces biuret.Under equal melt capacity, occupation area of equipment is big in addition, the investment cost height.
The solid materials heating unit is a kind of to be two bar stirring heating devices (with a kind of identical before the melting plant), and another kind then is a roller heater.Utilize two bar stirring heating devices heat transfers and heat exchange effect poor, the easy conglomeration of pulverulent material needs to increase shredding unit.Roller heating device then is a stack gas direct heating raw material, and raw material is easily contaminated, and when heating dust many, the difficulty of gathering dust is big, occupation area of equipment is big, the investment cost height.
Chinese patent application, application number is 200510060037.4 to disclose a kind of heating mixer of producing granular composite fertilizer, though this heating mixer has been removed the solid primary heater unit, but because of only adopting the one-level hybrid heater, all cold conditions material enter simultaneously, mix to be difficult to evenly, and it is big that heat supply intensity is wanted, need to make material residence time in well heater long with bigger heating mixer.Then can cause phosphorus ammonium polyreaction to strengthen to urea-base compound fertilizer, the slip viscosity rises, and nitrogen decreases to be increased.To nitro-compound fertilizer, then the salt pair reaction because of sylvite and ammonium nitrate causes the slip viscosity to rise, and is unfavorable for granulation.
Summary of the invention
The technical issues that need to address of the present invention are the defectives that overcome in the above technology, and a kind of pulping equipment of compound fertilizer production by tower granulation is provided, and can be implemented in the slurrying of three steps series connection continuous low temperature melting mixing, are beneficial to improve the granular composite fertilizer quality.
The technical scheme that solves the problems of the technologies described above is: a kind of pulping equipment of compound fertilizer production by tower granulation, comprise the fusion pot and the one-level mixing kettle that have well heater and whipping appts separately, and secondary mixing kettle with whipping appts, the bottom of fusion pot is higher than the top of one-level mixing kettle and communicates by the one-level overflow device, and the secondary mixing kettle top that the bottom of one-level mixing kettle is higher than also communicates by the secondary overflow device.
The bottom of described fusion pot by one-level communicating pipe the top with the one-level mixing kettle communicate, the bottom of one-level mixing kettle communicated with secondary mixing kettle top by level communicating pipe, the bottom of secondary mixing kettle communicated with the tablets press top by three grades of communicating pipe.
The bottom of a pan of fusion pot is provided with the blow-off valve that joins with one-level communicating pipe, and the bottom of a pan of one-level mixing kettle is provided with the blow-off valve that joins with secondary communicating pipe, and the bottom of a pan of secondary mixing kettle is provided with and three grades of blow-off valves that join communicating pipe.
Material inlet enters from the top end opening of fusion pot, one-level mixing kettle, secondary mixing kettle respectively, discharging is from the upflow tube discharging of overflow device during ordinary production, discharge also can be provided with flow control valve then from the bottom of a pan discharge port discharge in the import of secondary mixing kettle overflow device during stopping production.
When producing nitro-compound fertilizer, described secondary mixing kettle also has well heater.
Described well heater is the multi-turn spiral disk tubular heater that is arranged in the mixing kettle, this inner disc tubular type heater heats efficient height, avoid local superheating, fusion pot, one-level mixing kettle, the required heating-surface area of secondary mixing kettle then differ according to production capacity and employed raw material and determine.
Described whipping appts includes by electric motor, drives speed reduction unit, stirring rake, and stirring rake can adopt the oar formula, open turbine type, helical-ribbon type, preferred oar formula.The oar formula is divided into straight leaf and oblique leaf, preferred tiltedly leaf.End of blade linear velocity 3-8m/s, preferred 5m/s, tiltedly the leaf angle is 45 °, 30 °, preferred 45 °.The oblique wide b/d=0.1-0.25 of leaf.Diameter of propeller blade d/D=0.35-0.80, preferred 0.5.Every layer of blade 2-6 piece, preferred 4.Number of plies layer 2-4, preferred 3 layers.
In order to prevent pot interior material phenomenon of turning round and round, make material axial flow up and down, form uniform mixing, around the internal wall pot body of fusion pot or one-level mixing kettle, be provided with flow-stopping plate.The width W b=of this flow-stopping plate (1/18-1/10) D, preferred 1/12D, flow-stopping plate and internal wall pot body gap are Sb=(0.2-0.5) Wb, preferred 0.2Wb.The secondary mixing kettle also can be provided with flow-stopping plate, and secondary mixing kettle flow-stopping plate can not be provided with when slurry is thick.
As a kind of improvement of the present invention, the outside of described fusion pot, one-level mixing kettle, secondary mixing kettle and overflow device also can be provided with insulation jacket and be used to keep temperature, and the insulation jacket outside yet can be provided with adiabator layer and be used to save heat energy.
Insulation jacket 5 can be with Q235 or 304 stainless steels, and chuck has multiple pattern, and as conventional jacket, shaped steel chuck, half-pipe jacket, honeycomb jacket, preferred conventional jacket and half-pipe jacket are to the preferred half-pipe jacket of nitro-compound fertilizer.
The pulping equipment of compound fertilizer production by tower granulation of the present invention, can be implemented in the slurrying of three steps series connection continuous low temperature melting mixing, the various materials that are about to produce granular composite fertilizer progressively are incorporated in the fusion pot as required respectively, in one-level mixing kettle and the secondary mixing kettle, and can adjust temperature in each production stage as required, churning time etc., thereby has the realization cold operation, the slip good fluidity, good operational environment also can reduce the nitrogen consume, reduction is to the advantages such as generation of the deleterious biuret of farm crop, and the granular composite fertilizer particle of producing with this method is mellow and full, broken kernel is few, evenly.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment
The present invention is further elaborated below in conjunction with drawings and Examples.
Referring to Fig. 1, the pulping equipment of present embodiment compound fertilizer production by tower granulation can be used for producing urea-base compound fertilizer, the right cylinder inner core of its fusion pot A adopts 304 stainless steels, the skin of fusion pot A is steam integral heat insulation chuck 5 (yet can be shaped steel insulation jacket, semicanal insulation jacket, honeycomb insulation jacket, can adopt half-pipe jacket when producing nitro-compound fertilizer).The chuck material of insulation jacket is Q235.The insulation jacket outside yet can be provided with adiabator layer and be used to save heat energy.The bottom of a pan 7 of fusion pot A is an ellipse, and it also can be planar shaped, taper.Whipping appts is installed and is connected as one by electric motor 1, drive speed reduction unit 2, stirring rake 4, and whipping appts is mounted and fixed on the top pot mouth of fusion pot, and stirring rake 4 extend into the inside of fusion pot, by electric motor 1 driven rotary.Stirring rake 4 adopts the oar formula, also can adopt and open turbine type, helical-ribbon type.The oar formula is oblique leaf, also can be straight leaf.The end of blade linear velocity 4.72m/s of stirring rake 4, three layers of oblique leaf, 45 ° at oblique angle, the oblique wide b=160mm of leaf, go up each 4 of two-layer blades, 2 of lower floors are provided with four flow-stopping plates 8 around the internal wall pot body of the mixed pot of fusion, every flow-stopping plate 8 width are Wb=100mm, and the distance that mixes the inwall of pot with fusion is Sb=20mm.The inner coil pipe well heater 3 heating-surface area 28M that form by concentric multi-turn helical coil pipe
2Upflow tube 6 adopts the insulation jacket insulation, and the bottom of a pan 7 is provided with discharge gate, is connected with one-level communicating pipe 11 on the discharge gate, and the junction of one-level communicating pipe 11 and discharge gate is equipped with blow-off valve 9, and the other end of one-level communicating pipe 11 is connected to the top of one-level mixing kettle B.
One-level mixing kettle category-B is similar to fusion pot A, is provided with whipping appts too, flow-stopping plate 8, inner coil pipe well heater 3, upflow tube 6 etc.The blade end line speed of the agitator 4 of one-level mixing kettle B is 4.16m/s, and tiltedly the leaf oblique angle is 45 °, the wide b=160mm of leaf, and three layers of blade, last two layers each 4,2 of lower floors, one-level mixing kettle B adopts integral heat insulation chuck 5, and insulation jacket 5 materials are
Inner core is that normal pressure 304 stainless steels are made, and the bottom of a pan 7 is an ellipse.
The heating-surface area of the inner coil pipe well heater 3 of one-level mixing kettle B is 8M
2, upflow tube 6 is provided with full jacket steam insulation.The bottom of a pan 7 of one-level mixing kettle B is provided with discharge gate, is connected with secondary communicating pipe 12 on this discharge gate, and the junction of this secondary communicating pipe 12 and this discharge gate is equipped with blow-off valve 9, and the other end of secondary communicating pipe 12 is connected to the top of secondary mixing kettle C.
The insulation jacket 5 of secondary mixing kettle C is the integral heat insulation chuck, and the chuck material is Q235.The inner core of secondary mixing kettle C is that 304 stainless steels are made, and the bottom of a pan 7 is an ellipse.
The blade end line speed 4.86m/s of the stirring rake 4 of secondary mixing kettle C whipping appts, tiltedly the leaf angle is 45 °, the wide b=160mm of leaf, 2 layers of blade, 4 on upper strata, 2 of lower floors do not establish flow-stopping plate, are not provided with spiral heater yet.When the pulping equipment of compound fertilizer production by tower granulation of the present invention was used to produce nitro-compound fertilizer, secondary mixing kettle C can be provided with the inner coil pipe well heater.
The upflow tube 6 of secondary mixing kettle C adopts the insulation of integral heat insulation chuck; establish discharge gate on the bottom of a pan 7 of secondary mixing kettle C; be connected with three grades of communicating pipe 13 on this discharge gate; the junction of three grades of communicating pipe 13 and this discharge gate is equipped with blow-off valve 9; the other end of three grades of communicating pipe 13 and the top that is connected to tablets press D after the end of the upflow tube 6 of secondary mixing kettle C is communicated with, and be provided with flow control valve 10 in upflow tube 6 ingresss of secondary mixing kettle C.
Fusion pot A in the pulping equipment of described compound fertilizer production by tower granulation is installed in the superiors of this pulping equipment, and secondary mixing kettle C is installed in orlop, and one-level mixing kettle B is installed in the middle layer between fusion pot A and the secondary mixing kettle C.Fusion pot A, one-level mixing kettle B, secondary mixing kettle C and tablets press D set gradually from high to low; the bottom of secondary mixing kettle C is higher than the top of tablets press D, and each other at a distance of highly flowing in the next stage mixing kettle naturally by discharge gate for the material that can make the upper level mixing kettle.
In addition to the implementation, allly do not break away from the equivalence that the utility model does and implement or change, all should be contained in the claim of this case.
Claims (8)
1. the pulping equipment of a compound fertilizer production by tower granulation, it is characterized in that: comprise the fusion pot and the one-level mixing kettle that have well heater and whipping appts separately, and secondary mixing kettle with whipping appts, and each other apart highly for can make material wherein flow in the next stage mixing kettle naturally, wherein, the bottom of fusion pot is higher than the top of one-level mixing kettle and communicates by the one-level overflow device, the bottom of one-level mixing kettle is higher than secondary mixing kettle top and communicates by the secondary overflow device, and the secondary mixing kettle communicates with tablets press by three grades of overflow devices; The bottom of described fusion pot by one-level communicating pipe the top with the one-level mixing kettle communicate, the bottom of one-level mixing kettle communicated with secondary mixing kettle top by secondary communicating pipe, the bottom of secondary mixing kettle communicated with the tablets press top by three grades of communicating pipe; The bottom of a pan of described fusion pot is provided with the blow-off valve that joins with one-level communicating pipe, and the bottom of a pan of one-level mixing kettle is provided with the blow-off valve that joins with secondary communicating pipe, and the bottom of a pan of secondary mixing kettle is provided with and three grades of blow-off valves that join communicating pipe.
2. the pulping equipment of compound fertilizer production by tower granulation according to claim 1, it is characterized in that: described secondary mixing kettle also has well heater.
3. the pulping equipment of compound fertilizer production by tower granulation according to claim 2, it is characterized in that: described well heater is a multi-turn spiral disk tubular heater.
4. the pulping equipment of compound fertilizer production by tower granulation according to claim 1, it is characterized in that: the stirring rake of described whipping appts is oblique leaf oar formula.
5. the pulping equipment of compound fertilizer production by tower granulation according to claim 1 is characterized in that: be respectively equipped with flow-stopping plate around the internal wall pot body of described fusion pot and one-level mixing kettle.
6. the pulping equipment of compound fertilizer production by tower granulation according to claim 1, it is characterized in that: the outside of described fusion pot, one-level mixing kettle, secondary mixing kettle and overflow device also is provided with monoblock type or semi-canal type insulation jacket.
7. the pulping equipment of compound fertilizer production by tower granulation according to claim 6, it is characterized in that: described insulation jacket outside is provided with adiabator layer.
8. the pulping equipment of compound fertilizer production by tower granulation according to claim 1, it is characterized in that: described secondary mixing kettle overflow device is provided with flowrate control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101230843A CN100412036C (en) | 2006-10-30 | 2006-10-30 | Pulp making device for producing compound fertilizer by high tower pelletizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101230843A CN100412036C (en) | 2006-10-30 | 2006-10-30 | Pulp making device for producing compound fertilizer by high tower pelletizing |
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| Publication Number | Publication Date |
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| CN1944354A CN1944354A (en) | 2007-04-11 |
| CN100412036C true CN100412036C (en) | 2008-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101230843A Active CN100412036C (en) | 2006-10-30 | 2006-10-30 | Pulp making device for producing compound fertilizer by high tower pelletizing |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102432360B (en) * | 2011-08-25 | 2013-09-04 | 广东拉多美化肥有限公司 | Fusing and mixing device |
| CN102921337B (en) * | 2012-10-24 | 2014-11-26 | 河南心连心化肥有限公司 | Vacuum type blending device for producing sustained-release agent |
| CN104496624B (en) * | 2015-01-13 | 2017-07-18 | 四川美丰化工股份有限公司 | A kind of method and device for producing high tower nitro-compound fertilizer |
| CN105622275A (en) * | 2016-03-14 | 2016-06-01 | 朱青春 | Pure-natural multi-effect biogas slurry compound fertilizer and production method |
| CN106268483A (en) * | 2016-08-29 | 2017-01-04 | 河南心连心化肥有限公司 | The preparation facilities of a kind of compound fertilizer mixed slurry and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06191981A (en) * | 1992-12-25 | 1994-07-12 | Central Glass Co Ltd | Composition for coating fertilizer, coated granular fertilizer and production thereof |
| CN1749222A (en) * | 2004-12-31 | 2006-03-22 | 深圳市芭田生态工程股份有限公司 | Heating mixer for producing granular compound fertilizer |
-
2006
- 2006-10-30 CN CNB2006101230843A patent/CN100412036C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06191981A (en) * | 1992-12-25 | 1994-07-12 | Central Glass Co Ltd | Composition for coating fertilizer, coated granular fertilizer and production thereof |
| CN1749222A (en) * | 2004-12-31 | 2006-03-22 | 深圳市芭田生态工程股份有限公司 | Heating mixer for producing granular compound fertilizer |
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| CN1944354A (en) | 2007-04-11 |
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Address after: No. 28, sanshagang Road, Dongyong Town, Nansha District, Guangzhou, Guangdong 511453 Patentee after: Radome Technology Group Co.,Ltd. Address before: 2, building 206, building 60, high tech center building, No. 511453, compound 100, martyrs Road, Guangzhou, Guangdong Patentee before: GUANGDONG LARDMEE FERTILIZER CO.,LTD. |
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