CN101601977A - Method for preparing emulsion matrix safely and efficiently - Google Patents
Method for preparing emulsion matrix safely and efficiently Download PDFInfo
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- CN101601977A CN101601977A CNA2009101043022A CN200910104302A CN101601977A CN 101601977 A CN101601977 A CN 101601977A CN A2009101043022 A CNA2009101043022 A CN A2009101043022A CN 200910104302 A CN200910104302 A CN 200910104302A CN 101601977 A CN101601977 A CN 101601977A
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Abstract
The invention discloses a kind of method for preparing emulsion matrix safely and efficiently, comprise that (1) prepare aqueous phase solution and oil-phase solution respectively by processing compound, (2) described aqueous phase solution and oil-phase solution are conveyed into the static mixer mixing respectively, carry out colostrum, send into emulsifier then and carry out the essence breast, get emulsion matrix after smart breast is finished.The present invention is mainly by the front end tandem static blender at the mechanical agitation type emulsifier, the production capacity of finished product explosive production line emulsion matrix preparation can be brought up to 3.5～7t/h by 2～4t/h, on-site mixed emulsion can be brought up to 5～12t/h by 3～5t/h with the preparation production capacity of emulsion matrix, the quality of security of Sheng Chaning and emulsion matrix is guaranteed simultaneously, is adapted at improving in the technological transformation of emulsion production capacity applying.
Description
Technical field
The present invention relates to the half-finished processing method of a kind of explosive, specifically, is a kind of method for preparing emulsion matrix safely and efficiently.
Background technology
Emulsion is the anti-water and wastewater industry explosive of Water-In-Oil (W/O) latex type with the emulsifying technology preparation, it is that fine droplets with aqueous oxidizing agent solution is a decentralized photo, materials such as oil phase fuel and emulsifying agent are continuous phase, and are suspended with the emulsion system of a kind of water-in-oil type that disperses bubble or porous material.Because the contact area of aqueous ammonium nitrate solution and emulsifying agent, oil phase material is big closely, very near the structure of quasi-molecule, its detonation excites, propagates and aspect such as other explosion property has desirable blast feature, make it have advantages such as water resistance is strong, storage stability is high, detonation propagation reliability of nonel tube is high, explosion property is good, in the development of the national economy, obtain applying energetically.
But in recent years, a lot of significant explosion casualty accidents take place in the Emulsion Explosive Production, and main cause is relevant with emulsifier, and (semi-finished product that form through emulsifier emulsification are emulsion matrix, emulsion matrix is through cooling, sensitization, powder charge, promptly become the package-type emulsion after the packing, emulsion matrix is on-site mixed emulsion after sensitization on the explosive loading truck), for this reason, country's industry clearly proposes in the rules standard, the emulsifier that the emulsion continuous process is used should not adopt the emulsification of secondary mechanical agitation, and (emulsification of secondary mechanical agitation is meant and adopts Liang Tai and the powerful stirring of machinery more than two, for gluey emulsion, its working speed 〉=1450rpm, linear velocity 〉=15m/s).The most production lines of China are serialization automation emulsion explosive production line technology at present, and there are many production lines still to adopt old-fashioned secondary emulsifying technology (to adopt slow-speed of revolution emulsifier to carry out colostrum earlier, adopt high rotating speed emulsifier to carry out the essence breast again), and the working speed of most of smart newborn machine reaches more than the 2000rpm, deposit big very big potential safety hazard, need badly and carry out upgrade safety technologies.
In addition, China's most finished product emulsion explosive production line production capacity is lower than 12000t/a, cause the industry general layout of " little and diffusing " of over one hundred the emulsion explosive production line in the present whole nation, forming important technology factor of this situation is the emulsifying capacity deficiency, mean hours production capacity 3.5t emulsion matrix only.Mixed explosive production field at the scene, though the preparative capacibility of automobile-used emulsion matrix can reach 150～200kg/min and (amount to hour production capacity 9～12t/h), the emulsifier rotating speed also is lower than the rotating speed requirement of industry to emulsifier 1450rpm usually, but the dischargeable capacity of emulsifier is but greater than 5L, it is excessive to deposit dose, depositing big certain potential safety hazard, do not meet the industrial security management expectancy, also is to need the place of carrying out upgrade safety technologies badly.
Chinese patent application CN101357873A discloses a kind of " emulsion pharmacy and powder charge continuous production technology ", comprises the steps: 1. to prepare respectively aqueous phase solution and oil-phase solution; 2. aqueous phase solution and oil-phase solution are conveyed into the colostrum device respectively and mix, carrying out sending into behind the colostrum static mixer, to carry out essence newborn; 3. the essence latex is sent into sensitization powder charge system and carried out sensitization processing back powder charge, after the cooling system cooling, deliver to packaging system again and pack.The emulsion process of this technical scheme is divided into colostrum and smart newborn two stages, has following defective:
(1) its colostrum adopts mechanical type to stir, and stirring efficiency is low, and owing to deposit dose usually greater than tens of liters (writing exactly less than 120L on the patent document), poor stability in the colostrum device;
When (2) carrying out the essence breast owing to the employing static mixer, require the shear strength height and the gel viscosity of latex particle big, therefore must select the static mixer of high-drag for use, and material pressure loss when the static mixer is very big, therefore requiring has higher discharge pressure, must add conveying equipment high-pressure delivery such as screw pump in addition, and requires to be provided with cutout, overtemperature, superpressure safeguard protection arresting gear, the equipment complexity is unfavorable for safety in production;
The most important thing is that (3) this emulsifying manner has limited the raising that emulsion matrix prepares production capacity, production capacity can only reach 3～4t usually.
Summary of the invention
Technical problem to be solved by this invention is to provide the method for preparing emulsion matrix that a kind of security is good, production capacity is high.
In order to address the above problem, method for preparing emulsion matrix safely and efficiently of the present invention comprises that (1) prepare aqueous phase solution and oil-phase solution respectively; (2) press processing compound, described aqueous phase solution and oil-phase solution are conveyed into the static mixer mixing respectively, carry out colostrum, send into emulsifier then and carry out the essence breast, get emulsion matrix after smart breast is finished.
Emulsion matrix is an emulsification system by fuel oil, water, the coexistence of emulsifying agent three balance.Under common churned mechanically emulsifying manner, the emulsifier stirring blade runs up, and water and the oil-phase solution of importing continuously in proportion in the emulsifier produced strong shearing and tear effect, produces the stable emulsion matrix of " W/O " type at short notice.The common emulsification times of emulsifier is 3～5s at present.In fact, above-mentioned emulsion process is divided into two stages, and at first the first step is to reach between the water oil phase relatively fully to mix, and forms " micelle " or " O/W " type colloidal mixture that profit mixes, and this stage claims " premix "; Second step formed the stable emulsion matrix of " W/O " type by phase inversion (also claiming distortion or anti-phase) on the basis that brute force is sheared, this stage claims " smart breast ".When the emulsifier of traditional simple employing mechanical type stirring carries out emulsification, come down to finish premix and smart newborn two parts work simultaneously by emulsifier, it is longer relatively that the first step reaches the well-mixed time, generally account for more than 2/3 of whole emulsification times, and the second real phase inversion time in step is very short usually, and general 0.5～1s can finish, and that is to say, most of emulsification times all consumed in the premix stage, thereby caused whole emulsification times long.
Emulsification times is the ratio of emulsifier dischargeable capacity and flow.Under the constant situation of technical parameters such as technological parameters such as water oil phase prescription, temperature and flow and emulsifier structure, root diameter, working speed, in order to improve the emulsion matrix production capacity, need to strengthen the flow of material, it is inhomogeneous that flow strengthens back emulsification, therefore in order to guarantee emulsifying effectiveness, just enough emulsification times must be guaranteed, the increasing and the corresponding group number that will increase rotor of emulsifier dischargeable capacity must be caused like this, cause emulsifier pressure to increase, be unfavorable for safety in production.The present invention increases by a static mixer by the front end at emulsifier, finishes the work in above-mentioned premix stage by static mixer, and static mixer has the high advantage of mixing efficiency.And then finish the work in smart breast stage by emulsifier, so just significantly reduced and be used for churned mechanically emulsification times.In sum, the present invention has improved the production capacity of emulsion safely under the situation that does not increase emulsifier dischargeable capacity and rotor linear velocity.
As the preferred embodiment of technique scheme, the caliber of described static mixer is 50～65mm, and hydraulic diameter is 3.5～32.5mm, and flow is 3.5～12m
3/ h.
As another preferred embodiment of technique scheme, the quantity of described static mixer is one, or more than two, each static mixer series connection.
For preventing that water and oil phase from by heat dissipation of pipeline, influencing follow-up emulsifying effectiveness, be provided with the heat exchange jacket pipe at the shell of described static mixer.
If contain impurity in the medium, two 20～40 purpose stainless steel filtering nets should be set in the porch of described static mixer.
Above-mentioned static mixer is a kind of in SV type static mixer, SK type static mixer, SX type static mixer, the SL type static mixer, perhaps two or more combinations.
As mechanical agitation type emulsion emulsifier, can select the smart newborn device that the Emulsion Explosive Production special equipment is mentioned in " civil detonation article production equipment special catalogues " such as SRF, DRJ, CKR, CYJ, AE-HLC, JWL, JRJ, CDR for use.But its important technological parameters should meet following requirement: the dischargeable capacity≤5L of emulsifier, the rotor linear velocity≤15m/s of emulsifier.
As the preferred version of technique scheme, described aqueous phase solution is the aqueous solution that contains 65～85% mass concentration ammonium nitrate; Described oil-phase solution is made up of mineral oil and emulsifying agent, and its mineral oil in fluid accounts for 66.6%～91.6% of oil phase weight, and emulsifying agent accounts for 8.4%～33.4% of oil phase weight; The mass percent of described aqueous phase solution and oil-phase solution is 90～95%: 5～10%.
When the emulsion matrix production capacity improves, also corresponding requirements to be proposed to the emulsifying agent in the prescription of emulsion matrix, be easy to breast with assurance, the latex steady quality, the emulsion matrix viscosity that requires simultaneously to produce can not be too big, avoids the too high phenomenon of pumping pressure.Emulsifying agent of the present invention is answered the macromolecule emulsifier of LZ-2731 model, LZ-2735 model, LZ-2820 model or the LZ-2727 model of the production of the external Lubrizol Corp. of all or part of employing, and other emulsion matrix formula materials component and proportioning can remain unchanged.
Compared with prior art, the invention has the beneficial effects as follows:
(1) the present invention selects for use the less demanding static mixer of discharge pressure to carry out colostrum, adopts ripe at present emulsifier to carry out the essence breast, and mulser internal memory dose little (less than 5L) is safe;
(2) significantly reduced and be used for churned mechanically emulsification times, under the situation that does not increase emulsifier dischargeable capacity and rotor linear velocity, improved the production capacity of emulsion safely;
(3) appropriate change emulsion matrix prescription, the production capacity of finished product explosive production line emulsion matrix preparation can be brought up to 3.5～7t/h by 2～4t/h, and on-site mixed emulsion can be brought up to 5～12t/h by 3～5t/h with the preparation production capacity of emulsion matrix;
(4) device therefor technology of the present invention is simple, is convenient to production line and undergoes technological transformation.
The specific embodiment
Embodiment 1
(1) preparation aqueous phase solution and oil-phase solution.
Aqueous phase solution is the aqueous solution that contains 81% mass concentration ammonium nitrate and 9% mass concentration sodium nitrate.Oil-phase solution is made up of mineral oil and emulsifying agent, and mineral oil adopts complex wax, and emulsifying agent adopts LZ2820 and S-80 type emulsifying agent.Oil-phase solution component weight proportion is: complex wax: emulsifying agent S-80: emulsifying agent LZ2820=60%: 20%: 20%.The weight ratio of water and oil phase is: water: oil phase=93.8%: 6.2%; 95 ℃ of water temperature, 70 ℃ of oil phase temperature.
(2) above-mentioned aqueous phase solution and oil-phase solution are conveyed into the static mixer mixing respectively, carry out colostrum, send into emulsifier then and carry out the essence breast, get emulsion matrix after smart breast is finished.Static mixer adopts one group of SX12.5/50 type static mixer; Emulsifier adopts AE-HLC type (production capacity that adopts the emulsifier of mechanical agitation type merely is 3.5～4t/h, power 15kw, rotating speed 1440rpm, linear velocity 15m/s, monolateral radial clearance 4.0m, end play 8mm, dischargeable capacity 5.0L), rotating speed 1440rpm.Production capacity is pressed 6t/h control flow, produces smooth and easy, between the static mixer import and export pressure loss at 0.2Mpa, the emulsion matrix clear transparent of producing, viscoplasticity is better, good stability satisfies the requirement of package-type Emulsion Explosive Production.
Embodiment 2
(1) preparation aqueous phase solution and oil-phase solution.
Aqueous phase solution is the aqueous solution that contains 82% mass concentration ammonium nitrate.Oil-phase solution is made up of mineral oil and emulsifying agent, and mineral oil adopts machine oil to mix with diesel oil, and emulsifying agent adopts LZ2731.Oil-phase solution component weight proportion is: diesel oil: machine oil: emulsifying agent LZ2731=50%: 16%: 34%.The weight ratio of water and oil phase is: water: oil phase=95%: 5%.85 ℃ of water temperature, 50 ℃ of oil phase temperature.
(2) above-mentioned aqueous phase solution and oil-phase solution are conveyed into the static mixer mixing respectively, carry out colostrum, send into emulsifier then and carry out the essence breast, get emulsion matrix after smart breast is finished.Static mixer adopts one group on SX16.25/50 type; Emulsifier adopts CDR-5-22 type (production capacity that adopts the emulsifier of mechanical agitation type merely is 5t/h, power 22kw, rotating speed 1470rpm, linear velocity 12.9m/s, monolateral radial clearance 3.0m, end play 5mm, dischargeable capacity 2L), rotating speed 1470rpm; Production capacity is pressed 10t/h control flow, produces smooth and easy, between the static mixer import and export pressure loss at 0.15Mpa, the emulsion matrix clear transparent of producing, viscoplasticity is better, good stability satisfies on-site mixed Emulsion Explosive Production requirement.
Claims (9)
1. a method for preparing emulsion matrix safely and efficiently comprises the following steps:
(1) prepares aqueous phase solution and oil-phase solution respectively;
(2) press processing compound, described aqueous phase solution and oil-phase solution are conveyed into the static mixer mixing respectively, carry out colostrum, send into emulsifier then and carry out the essence breast, get emulsion matrix after smart breast is finished.
2. method for preparing emulsion matrix safely and efficiently according to claim 1 is characterized in that: the caliber of described static mixer is 50～65mm, and hydraulic diameter is 3.5～32.5mm, and flow is 3.5～12m
3/ h.
3. method for preparing emulsion matrix safely and efficiently according to claim 2 is characterized in that: the quantity of described static mixer is one, or more than two, each static mixer series connection.
4. method for preparing emulsion matrix safely and efficiently according to claim 3 is characterized in that: the shell at described static mixer is provided with the heat exchange jacket pipe.
5. method for preparing emulsion matrix safely and efficiently according to claim 4 is characterized in that: two 20～40 purpose stainless steel filtering nets are set in the porch of described static mixer.
6. according to the arbitrary described method for preparing emulsion matrix safely and efficiently of claim 2 to 5, it is characterized in that: described static mixer is a kind of in SV type static mixer, SK type static mixer, SX type static mixer, the SL type static mixer, perhaps two or more combinations.
7. method for preparing emulsion matrix safely and efficiently according to claim 1 is characterized in that: the dischargeable capacity≤5L of described emulsifier, the rotor linear velocity≤15m/s of emulsifier.
8. method for preparing emulsion matrix safely and efficiently according to claim 1 is characterized in that: described aqueous phase solution is the aqueous solution that contains 65～85% mass concentration ammonium nitrate; Described oil-phase solution is made up of mineral oil and emulsifying agent, and its mineral oil in fluid accounts for 66.6%～91.6% of oil phase weight, and emulsifying agent accounts for 8.4%～33.4% of oil phase weight; The mass percent of described aqueous phase solution and oil-phase solution is 90～95%: 5～10%.
9. method for preparing emulsion matrix safely and efficiently according to claim 8 is characterized in that: described emulsifying agent is the macromolecule emulsifier of LZ-2731 model, LZ-2735 model, LZ-2820 model or LZ-2727 model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2009101043022A CN101601977A (en) | 2009-07-10 | 2009-07-10 | Method for preparing emulsion matrix safely and efficiently |
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| CNA2009101043022A CN101601977A (en) | 2009-07-10 | 2009-07-10 | Method for preparing emulsion matrix safely and efficiently |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976872A (en) * | 2012-12-06 | 2013-03-20 | 南京理工大学 | Emulsification device and method for safely preparing emulsion matrix |
| CN103691335A (en) * | 2013-11-13 | 2014-04-02 | 上海涂料有限公司上海新华树脂厂 | Continuous aqueous epoxy emulsion manufacturing method |
| CN104058904A (en) * | 2014-07-07 | 2014-09-24 | 山东天宝化工股份有限公司 | Pilot test production line and production process of emulsion explosives |
| CN104447141A (en) * | 2014-12-09 | 2015-03-25 | 葛洲坝易普力股份有限公司 | Knapsack type emulsified-explosive loader adopting site mixing and loading |
| CN104557348A (en) * | 2015-02-05 | 2015-04-29 | 巴彦淖尔盛安化工有限责任公司乌拉特中旗分公司 | Water-containing ammonium nitrate fuel oil explosive and preparation process thereof |
| CN106699487A (en) * | 2015-07-28 | 2017-05-24 | 安徽瑞思迪恩采矿服务有限公司 | Mixer for preparation of emulsion matrix and emulsion preparation method |
| CN110357756A (en) * | 2019-08-16 | 2019-10-22 | 辽宁红山化工股份有限公司 | A kind of High water cut emulsion preparation method |
-
2009
- 2009-07-10 CN CNA2009101043022A patent/CN101601977A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976872A (en) * | 2012-12-06 | 2013-03-20 | 南京理工大学 | Emulsification device and method for safely preparing emulsion matrix |
| CN103691335A (en) * | 2013-11-13 | 2014-04-02 | 上海涂料有限公司上海新华树脂厂 | Continuous aqueous epoxy emulsion manufacturing method |
| CN103691335B (en) * | 2013-11-13 | 2016-02-24 | 上海涂料有限公司上海新华树脂厂 | A kind of manufacture method of continous way aqueous epoxy emulsion |
| CN104058904A (en) * | 2014-07-07 | 2014-09-24 | 山东天宝化工股份有限公司 | Pilot test production line and production process of emulsion explosives |
| CN104058904B (en) * | 2014-07-07 | 2016-06-08 | 山东天宝化工股份有限公司 | A kind of emulsion pilot production line and production technology thereof |
| CN104447141A (en) * | 2014-12-09 | 2015-03-25 | 葛洲坝易普力股份有限公司 | Knapsack type emulsified-explosive loader adopting site mixing and loading |
| CN104447141B (en) * | 2014-12-09 | 2016-08-24 | 葛洲坝易普力股份有限公司 | A kind of explosive loader of the on-site mixed emulsion of backpack |
| CN104557348A (en) * | 2015-02-05 | 2015-04-29 | 巴彦淖尔盛安化工有限责任公司乌拉特中旗分公司 | Water-containing ammonium nitrate fuel oil explosive and preparation process thereof |
| CN106699487A (en) * | 2015-07-28 | 2017-05-24 | 安徽瑞思迪恩采矿服务有限公司 | Mixer for preparation of emulsion matrix and emulsion preparation method |
| CN110357756A (en) * | 2019-08-16 | 2019-10-22 | 辽宁红山化工股份有限公司 | A kind of High water cut emulsion preparation method |
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Open date: 20091216 |