CN203498274U

CN203498274U - Urea sulfate reactor

Info

Publication number: CN203498274U
Application number: CN201320484237.2U
Authority: CN
Inventors: 张凤林; 常延龙; 赵海溟
Original assignee: LIAONING JINDA FERTILIZER INDUSTRY Co Ltd
Current assignee: LIAONING JINDA FERTILIZER INDUSTRY Co Ltd
Priority date: 2013-08-09
Filing date: 2013-08-09
Publication date: 2014-03-26
Anticipated expiration: 2023-08-09

Abstract

The utility model provides a urea sulfate reactor. When in use, concentrated sulfuric acid and a high-temperature urea solution are mixed and enter the reactor; through sufficient contact in short time, a great quantity of reaction heat, high-temperature thick urea sulfate liquid, high-temperature molten urea and high-temperature high-pressure steam are generated by chemical reactions; the high-temperature thick urea sulfate liquid and high-temperature molten urea are atomized and sprayed into a granulator through a narrow atomization nozzle under certain pressure; since the atomized high-temperature materials are directly sprayed to the surface of the material layer in the granulator, the temperature and liquid phase quantity of the material in the granulator can be increased through contact. The material in the granulator is granulated during the rotation of the granulator; meanwhile, since the material sprayed out of the reactor contains sulfuric acid which generates a chemical reaction with ammonium hydrogen carbonate added into the material and releases water and a great quantity of reaction heat, the temperature and liquid phase quantity of the material in the granulator can be greatly increased, and the material is easier to granulate.

Description

Ureasulfuric acid reactor

Technical field

The utility model relates to a kind of ureasulfuric acid reactor, belongs to composite fertilizer's technical field.

Background technology

At present, China's compound fertilizer granulating generally adopts the propylhomoserin method after steam agglomeration, urine mortar jetting method or upgrading, and along with the continuous progress of science and technology, only a few enterprise has brought into use ureasulfuric acid ammonification mortar jetting method.Ureasulfuric acid ammonification mortar jetting method is a kind of advanced prilling process that integrates above-mentioned various comminution granulation advantages, the method had both been applicable to the fertile composite fertilizer of above-mentioned comminution granulation, also be applicable to the composite fertilizers such as 30-10-10,16-16-16 that above-mentioned comminution granulation can not or be difficult to produce, 17-17-17,18-18-18,15-5-25, and the straight fertilizer such as the granulation of sulphur ammonium, potash fertilizer granulation, potassium sulfate grain.Yet in producing, practice finds, the ureasulfuric acid reactor that traditional urea sulphur processing unit is used is supporting with it with equipment such as pipeline, pump valves, complex structure not only, troublesome poeration, investment large (approximately more than 40 ten thousand yuan), life cycle is short, and in production process, calorific loss is large, perishable, after corrosion, there is great potential safety hazard, Problem cost is high.

The patent No. 201110290323.5 discloses a kind of process for producing urea sulfate ammoniated compound fertilizer, because adopting sulfuric acid, it reacts in advance generation ureasulfuric acid with urea, by dilution, become ureasulfuric acid solution again, the reactor that sulfuric acid and urea reaction are adopted and the transport pipe erosion resistance of ureasulfuric acid are had relatively high expectations, and anticorrosion area is large; Also by tubular reactor, react with gas ammonia again, need to drop into ammonia station, safe class requires high, need to drop into a series of safety features, makes whole device structure complicated, and input and running cost are high.

Utility model content

For above deficiency; the purpose of this utility model is to provide a kind of ureasulfuric acid reactor, and it is arranged in tablets press, can efficiently utilize reaction heat and the high temperature and high pressure steam of urea soln and the vitriol oil; not only there is good granulation effect, and there is good energy-saving effect.

The technical solution of the utility model: ureasulfuric acid reactor is positioned at tablets press, it comprises diversion section, nitration mixture section, fixed bed reaction section, sprays pipeline and atomizing nozzle five parts, and above-mentioned five parts are arranged in turn and by ring flange, are fixedly connected with each other; Urea soln pipeline is connected with the urea soln inlet end of reactor, and this urea soln inlet end is positioned at the distolateral of diversion section; Concentrated sulfuric acid solution pipeline is connected with the vitriol oil inlet end of reactor, and this vitriol oil inlet end is positioned on the sidewall of nitration mixture section; A fixed bed reaction Duan Weiyi room, forms a packing layer by orifice plate I and the isolation of orifice plate II in room, and this packing layer communicates with feeding port, in orifice plate I and orifice plate II, is evenly distributed with respectively several through holes.

From the exit end of room, draw gas exhaust duct, and be provided with venting port at the end that sprays pipeline, can the unnecessary pressure of removal system, be beneficial to liquid stable.

In described diversion section, be provided with spiral deflector, for meeting fully mixing and addition reaction of urea soln and the vitriol oil.

In nitration mixture section, be provided with standby inlet end, for replacing or supplementing former vitriol oil inlet end, or be convenient to add water.

In described fixed bed reaction section, at the inlet end place of room, be provided with evacuation port, be convenient to emit in time the residuals in fixed bed reaction section, while preventing from stopping production, for equipment, cause corrosion.

Ureasulfuric acid reactor linings anti-corrosion layer, this anti-corrosion layer adopts tetrafluoroethylene, prevents that sulfuric acid and ureasulfuric acid solution from causing corrosion to it.

A compound fertilizer production technology that adopts ureasulfuric acid reactor, comprises the following steps:

(1) ureasulfuric acid reactor is installed in tablets press, urea soln pipeline is connected with the urea soln inlet end of reactor, concentrated sulfuric acid solution pipeline is connected with the vitriol oil inlet end of reactor, basic material is housed and containing the material of N, P, K in tablets press;

(2) high temperature (95-105 ℃) urea soln and the vitriol oil are put in ureasulfuric acid reactor and reacted by proportioning, in reaction process, produce a large amount of reaction heat, high temperature thickness ureasulfuric acid liquid, high-temperature fusion urea and high temperature and high pressure steam, wherein high temperature thickness ureasulfuric acid liquid and high-temperature fusion urea are atomized by atomizing nozzle under the effect of pressure, granulation is carried out on the material bed of material surface directly spraying into after atomization in tablets press, high temperature and high pressure steam sprays into tablets press to improve temperature and the amount of liquid phase of material by gas exhaust duct, the sulfuric acid that has neither part nor lot in reaction and the basic material generation neutralization reaction that from atomizing nozzle, spray simultaneously, the water that it is emitted and reaction heat are equally in order to improve temperature and the amount of liquid phase of material,

(3) the compound manure drying of discharging from tablets press, screening, obtain complex fertilizer product.

The beneficial effects of the utility model:

1. ureasulfuric acid structure of reactor of the present utility model is simple, volume is little, lightweight, be convenient to install, dismantle, clear up and safeguard, be applicable to the production of multiple composite fertilizer, be difficult in the past the composite fertilizers such as production or not fertile 30-10-10,16-16-16,17-17-17,18-18-18,19-19-19, and the granulation of sulphur ammonium, Repone K granulation, potassium sulfate granulation etc., by adopting after ureasulfuric acid reactor of the present utility model, now can realize normal production, and granulation grain type is good, and output is high, and granule strength obviously improves; Fertile various fertilizer in the past, by adopting after ureasulfuric acid reactor of the present utility model, existing granulation quality is higher, and better effects if, can realize in addition without filler granulation, has solved the problem of the granulating difficulties such as ammonium sulfate, Repone K, potassium sulfate;

2. adopt the compound fertilizer production technology of ureasulfuric acid reactor, its technique is not only simple, and can make full use of the characteristic that ureasulfuric acid soltion viscosity is high (can reach 50 * 103pa.s in the time of 60 ℃), reach reaction heat and the high temperature and high pressure steam of bumping, adding the sulfuric acid of complete reaction not and the basic material in material further there is neutralization reaction and emits large calorimetric and water, can effectively improve temperature of charge and amount of liquid phase in tablets press, do like this and not only greatly improve granulation material environment, make material granulation at once, and because prilling temperature is high, moisture is low, can effectively reduce and dry load, save energy, can also avoid secondary granulation in drying course to occur the situation of large simultaneously, returning charge is reduced,

3. adopt in the compound fertilizer production technology of ureasulfuric acid reactor, due to using sulfated and neutralization reaction basic material, make granulation balling ratio high, particle shape rounding, smooth surface.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model ureasulfuric acid reactor.

Fig. 2 is the structural representation of fixed bed reaction section.

Fig. 3 is that A-A in Fig. 2 is to sectional view.

Fig. 4 is that B-B in Fig. 2 is to sectional view.

Fig. 5 is that C-C in Fig. 1 is to sectional view.

Embodiment

Embodiment mono-

As shown in Figures 1 to 5, ureasulfuric acid reactor is positioned at tablets press, and it comprises diversion section 2, nitration mixture section 3, fixed bed reaction section 4, sprays pipeline 5 and atomizing nozzle five parts, and above-mentioned five parts are arranged in turn and by ring flange, are fixedly connected with each other; Urea soln pipeline is connected with the urea soln inlet end 1 of reactor, and this urea soln inlet end 1 is positioned at the distolateral of diversion section 2; Concentrated sulfuric acid solution pipeline is connected with the vitriol oil inlet end 7 of reactor, and this vitriol oil inlet end 7 is positioned on the sidewall of diversion section 2 ends; Fixed bed reaction section 4 is a room, in room, by orifice plate I 12 and 13 isolation of orifice plate II, form a packing layer 11, this packing layer 11 communicates with feeding port 10, in orifice plate I 12 and orifice plate II 13, be evenly distributed with respectively several through holes, from the exit end of room, draw gas exhaust duct 6, at the end that sprays pipeline 5, be provided with venting port 14.In described diversion section 2, be provided with spiral deflector 15.In diversion section 2 or nitration mixture section 3, be provided with standby inlet end 8.In described fixed bed reaction section 4, at the inlet end place of room, be provided with evacuation port 9.Ureasulfuric acid reactor linings anti-corrosion layer, this anti-corrosion layer adopts tetrafluoroethylene.

Its principle of work: a certain proportion of vitriol oil and high temperature urea soln are dropped in reactor, by fully contacting, there is extremely violent chemical reaction at short notice, in reaction process, produce a large amount of reaction heat, high temperature thickness ureasulfuric acid liquid, high-temperature fusion urea, high temperature and high pressure steam (violent thermopositive reaction makes the instant water gasification in former urea soln produce high vapor pressure), high temperature thickness ureasulfuric acid liquid and high-temperature fusion urea are atomized and are sprayed into tablets press by narrow and small atomizing nozzle under high pressure, because the above-mentioned high-temperature material being atomized is directly sprayed onto material bed of material surface in tablets press, therefore by contact, understand temperature and the amount of liquid phase that improves material in tablets press.Tablets press in rotation in tablets press material be a granulated into particle; meanwhile; owing to containing in the material spraying in reactor, do not have the sulfuric acid of complete reaction violent chemical reaction to occur with the bicarbonate of ammonia that adds in material; emit water and a large amount of reaction heat; more can allow in the temperature of material in tablets press and liquid phase and greatly increase, make the easier granulation of this material.In addition, ureasulfuric acid has very high viscosity, makes the interior material granulation of tablets press easier, and fusing urea recrystallization process has increased the balling ratio of material especially.

Claims

1. ureasulfuric acid reactor, it is characterized in that: this reactor is positioned at tablets press, it comprises inlet end (1), diversion section (2), nitration mixture section (3), fixed bed reaction section (4), sprays pipeline (5) and atomizing nozzle (16) five parts, and above-mentioned five parts are arranged in turn and by ring flange, are fixedly connected with each other; Urea soln pipeline is connected with the urea soln inlet end (1) of reactor, and this urea soln inlet end (1) is positioned at the distolateral of diversion section (2); Concentrated sulfuric acid solution pipeline is connected with the vitriol oil inlet end (7) of reactor, and this vitriol oil inlet end (7) is positioned on the sidewall of diversion section (3) end; Fixed bed reaction section (4) is a room, in room, by orifice plate I (12) and orifice plate II (13) isolation, form a packing layer (11), this packing layer (11) communicates with feeding port (10), in orifice plate I (12) and orifice plate II (13), is evenly distributed with respectively several through holes.

2. ureasulfuric acid reactor as claimed in claim 1, is characterized in that: at the end that sprays pipeline (5), be provided with venting port (14).

3. ureasulfuric acid reactor as claimed in claim 1, is characterized in that: from the exit end of room, draw gas exhaust duct (6).

4. ureasulfuric acid reactor as claimed in claim 1, is characterized in that: in described diversion section (2), be provided with spiral deflector (15).

5. ureasulfuric acid reactor as claimed in claim 1, is characterized in that: in nitration mixture section (3), be provided with standby inlet end (8).

6. ureasulfuric acid reactor as claimed in claim 1, is characterized in that: in described fixed bed reaction section (4), at the inlet end place of room, be provided with evacuation port (9).

7. ureasulfuric acid reactor as claimed in claim 1, is characterized in that: ureasulfuric acid reactor linings anti-corrosion layer, this anti-corrosion layer adopts tetrafluoroethylene.