Device and method for recycling emulsifier production waste

Abstract

The application discloses a device and method for recycling emulsifier production waste, and relates to the technical field of environmental protection. The device for recycling emulsifier production waste comprises a material mixing screw, the front end of the material mixing screw is an expanded nitram feeding port, the rear end of the material mixing screw is an expanded explosive discharging port, and the device further comprises a reaction kettle used for containing waste oil. A stirring fin is arranged in the reaction kettle, and a material inlet is arranged at the upper end of the reaction kettle. A wood powder feeding port, a composite oil phase feeding port and a waste oil feeding port are arranged on the material mixing screw, and the waste oil feeding port is connected with the reaction kettle. The waste oil is added into the expanded explosive as a reducing agent of an explosion reaction, the waste oil participates in the explosion reaction, the waste oil is destroyed and treated, the production cost of the explosive is reduced, environmental pollution is avoided, and the device has the advantages of simplicity and effectiveness.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of environmental protection technology, in particular to a device and method for recycling emulsifier production waste. BACKGROUND

[0002] At present, the emulsifier used for producing emulsion explosive in China is sorbitan monooleate, commonly known as Span-80. The main raw materials used are oleic acid and sorbitol. The synthesis of Span-80 is carried out at high temperature (200-250℃) and under negative pressure. During the synthesis process, about 2-3% of a black, strongly odorous, and combustible oil (mainly hydrocarbons) is extracted under negative pressure, which is referred to as waste oil hereinafter. The composition of the waste oil is complex and can only be partially dissolved in diesel oil, composite wax, and paraffin wax. The waste oil is generally treated by burning and landfill, which causes significant environmental pollution. SUMMARY

[0003] In view of the defects in the prior art, the present application aims to provide a device and method for recycling emulsifier production waste. The waste oil is added to the expanded explosive as a reducing agent for the explosive reaction. The waste oil participates in the explosive reaction, thereby destroying and treating the waste oil, reducing the production cost of the explosive, and avoiding environmental pollution. The present application has the advantages of simplicity and effectiveness.

[0004] To achieve the above-mentioned purposes, the technical solution adopted by the present application is as follows: a device for recycling emulsifier production waste, comprising a material mixing screw, a front end of the material mixing screw being an expanded ammonium nitrate feeding port, a rear end of the material mixing screw being an expanded explosive discharging port, and a reaction kettle for containing waste oil; a stirring fin is arranged in the reaction kettle, and a material inlet is arranged at the upper end of the reaction kettle; a wood powder feeding port, a composite oil phase feeding port, and a waste oil feeding port are arranged on the material mixing screw, and the waste oil feeding port is connected with the reaction kettle.

[0005] On the basis of the above technical solution, a waste oil metering valve is arranged at the waste oil feeding port.

[0006] On the basis of the above technical solution, the wood powder feeding port, the composite oil phase feeding port, and the waste oil feeding port are arranged in sequence from front to back.

[0007] On the basis of the above technical solution, the distance between the composite oil phase feeding port and the waste oil feeding port is not less than 1.5 meters, and the distance between the waste oil feeding port and the expanded explosive discharging port is not less than 6 meters.

[0008] On the basis of the above technical solution, the rotation speed of the material mixing screw is 30-50 revolutions per minute.

[0009] The present application also provides a method for recycling emulsifier production waste, comprising the following steps:

[0010] Step S1. Collect the waste oil produced in the emulsifier production process and put it into a reaction kettle;

[0011] Step S2. Heat the waste oil in the reaction kettle to 120-150℃, add 0.2-0.5% of strong base, keep warm and stir, after 0.5-1 hour of reaction, cool to below 80℃, ready for use;

[0012] Step S3. Mix the waste oil obtained in step 2 with expanded ammonium nitrate, composite oil phase and wood powder uniformly, and package to obtain the expanded explosive product.

[0013] On the basis of the above technical solution, in step S2, the strong base is sodium hydroxide.

[0014] On the basis of the above technical solution, in step S3, the weight ratio of expanded ammonium nitrate: 91-93%, wood powder: 3-5%, composite oil phase: 3.7-3.9%, waste oil: 0.1-0.3% is mixed.

[0015] On the basis of the above technical solution, in step S3, the mixing is carried out by material mixing screw.

[0016] On the basis of the above technical solution, in step S3, the order of adding each material to the material mixing screw is expanded ammonium nitrate, wood powder, composite oil phase, waste oil.

[0017] The beneficial effects of the present application are:

[0018] The method for recycling emulsifier production waste material of the present application adds waste oil into expanded explosive as a reducing agent for explosive reaction, and the waste oil participates in explosive reaction, which not only destroys and disposes the waste oil, but also reduces the production cost of explosive, and does not cause environmental pollution. It has the advantages of simplicity and effectiveness. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure diagram of the device for recycling emulsifier production waste material of the present application.

[0020] REFERENCE NUMERALS:

[0021] 1. Expanded ammonium nitrate feeding port; 2. Material mixing screw; 3. Wood powder feeding port; 4. Composite oil phase feeding port; 5. Waste oil feeding port; 6. Reaction kettle; 7. Material inlet; 8. Stirring fin; 9. Waste oil; 10. Expanded explosive discharge port. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be described in detail below, and the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout.

[0023] In the description of the present application, it should be noted that for orientation words, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0024] The technical scheme of the present application and its beneficial effects will be clearer and more explicit through further description of the specific embodiments of the present application in combination with the accompanying drawings of the specification. The following description of the embodiments by referring to the accompanying drawings is exemplary and is intended to explain the present application, and cannot be understood as limiting the present application.

[0025] Referring to Figure 1 As shown in the drawings, the present application provides a device for recycling emulsifier production waste, which comprises a material mixing screw 2, the front end of the material mixing screw 2 is an expanded ammonium nitrate feeding port 1, and the rear end of the material mixing screw 2 is an expanded explosive discharge port 10, characterized in that: it further comprises a reaction kettle 6 for containing waste oil 9; a stirring fin 8 is arranged in the reaction kettle 6, and a material inlet 7 is arranged at the upper end of the reaction kettle 6; specifically, the rotating speed of the material mixing screw 2 is 30-50 revolutions per minute.

[0026] A wood powder feeding port 3, a composite oil phase feeding port 4 and a waste oil feeding port 5 are arranged on the material mixing screw 2, and the waste oil feeding port 5 is connected with the reaction kettle 6. Specifically, a waste oil metering valve is arranged at the waste oil feeding port 5. The wood powder feeding port 3, the composite oil phase feeding port 4 and the waste oil feeding port 5 are arranged in sequence from front to back. The distance between the composite oil phase feeding port 4 and the waste oil feeding port 5 is not less than 1.5 meters, and the distance between the waste oil feeding port 5 and the expanded explosive discharge port 10 is not less than 6 meters.

[0027] The present application also provides a method for recycling emulsifier production waste, comprising the following steps:

[0028] Step S1. Collecting waste oil 9 generated in the emulsifier production process and placing it into a reaction kettle 6;

[0029] Step S2. Heating the waste oil 9 in the reaction kettle 6 to 120-150 DEG C, adding 0.2-0.5% of strong alkali, keeping warm and stirring, reacting for 0.5-1 hours, and then cooling to below 80 DEG C for standby; specifically, the strong alkali is sodium hydroxide.

[0030] Step S3. The waste oil 9 obtained in step 2 is mixed with expanded ammonium nitrate, composite oil phase and wood powder, and then packed to obtain the expanded explosive product. Specifically, the expanded ammonium nitrate: 91-93%, wood powder: 3-5%, composite oil phase: 3.7-3.9%, waste oil 9: 0.1-0.3% by weight are mixed. The materials are mixed by the material mixing screw 2. The order of adding the materials to the material mixing screw 2 is expanded ammonium nitrate, wood powder, composite oil phase, waste oil 9.

[0031] The application is further illustrated by the following specific examples.

[0032] Example 1:

[0033] 1. Add 1 ton of waste oil to the waste oil reactor, heat the waste oil in the reactor to 120°C, add 2 kg (0.2%) of sodium hydroxide, keep warm and stir, react for 0.5 hours, cool to below 80°C, and reserve. The obtained waste oil has no odor.

[0034] 2. Mix the waste oil with the odor removed according to the weight ratio of expanded ammonium nitrate: 91%, wood powder: 5%, composite oil phase: 3.7%, waste oil: 0.3% in the screw;

[0035] 3. The order of adding is expanded ammonium nitrate, wood powder, composite oil phase, waste oil;

[0036] 4. The distance between the material composite oil phase feeding port and the waste oil feeding port is 1.5 meters;

[0037] 5. The distance between the material waste oil feeding port and the expanded explosive discharging port is 6 meters;

[0038] 6. The material mixing screw rotation speed is 30 rpm;

[0039] The performance of the expanded explosive prepared above is shown in Table 1:

[0040] Table 1: Performance table of expanded explosive

[0041]

[0042] Example 2:

[0043] 1. Add 1 ton of waste oil to the waste oil reactor, heat the waste oil in the reactor to 150°C, add 5 kg (0.5%) of sodium hydroxide, keep warm and stir, react for 1 hour, cool to below 80°C, and reserve. The obtained waste oil has no odor.

[0044] 2. Mix the waste oil with the odor removed according to the weight ratio of expanded ammonium nitrate: 93%, wood powder: 3%, composite oil phase: 3.9%, waste oil: 0.1% in the screw;

[0045] 3. The order of adding is expanded ammonium nitrate, wood powder, compound oil phase, waste oil;

[0046] 4. The distance between the feeding port of the material compound oil phase and the feeding port of waste oil is 2.0 meters;

[0047] 5. The distance between the feeding port of the material waste oil and the discharging port of the expanded explosive is 8 meters;

[0048] 6. The rotating speed of the mixing screw is 50 revolutions per minute;

[0049] The performance of the prepared expanded explosive is shown in Table 2:

[0050] Table 2: Performance table of expanded explosive

[0051]

[0052]

[0053] In the present application, under the combined action of strong alkali and high temperature, the waste material (a black oily substance with strong odor, hereinafter referred to as waste oil) produced in the emulsifier production process reacts with strong alkali to eliminate the odor; the waste oil after eliminating the odor is mixed with expanded ammonium nitrate, compound oil phase and wood powder in a certain weight ratio and order, and the expanded explosive product is packaged.

[0054] The present application adds waste oil into the expanded explosive as a reducing agent for explosion reaction, and the waste oil participates in the explosion reaction, which destroys and processes the waste oil, reduces the production cost of the explosive, and does not cause environmental pollution. The present application has the advantages of simplicity and effectiveness.

[0055] In the description of the specification, the description of the terms "one embodiment", "preferably", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application, and the illustrative description of the above terms in the specification does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner without departing from the principles of the present application.

[0056] The present application is not limited to the above-mentioned embodiments, and those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements are also considered to be within the protection scope of the present application. The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

Claims

1. A method for recycling emulsifier production waste, based on an apparatus for recycling emulsifier production waste, the apparatus comprising a material mixing spiral (2), the front end of which is an expanded ammonium nitrate inlet (1), and the rear end of which is an expanded explosive outlet (10), characterized in that: It also includes a reactor (6) for holding waste oil (9); the reactor (6) is equipped with stirring fins (8) and a material inlet (7) is provided at the upper end of the reactor (6); The material mixing spiral (2) is provided with a wood powder inlet (3), a composite oil phase inlet (4) and a waste oil inlet (5), and the waste oil inlet (5) is connected to the reactor (6); A waste oil metering valve is installed at the waste oil inlet (5); The wood flour inlet (3), the composite oil phase inlet (4), and the waste oil inlet (5) are arranged sequentially from front to back; The distance between the composite oil phase inlet (4) and the waste oil inlet (5) is not less than 1.5 meters, and the distance between the waste oil inlet (5) and the puffed explosive outlet (10) is not less than 6 meters. The material mixing spiral (2) rotates at a speed of 30-50 rpm; characterized in that it includes the following steps: Step S1. Collect the waste oil (9) generated during the emulsifier production process and put it into the reaction vessel (6); Step S2. Heat the waste oil (9) in the reactor (6) to 120-150℃, add 0.2-0.5% strong alkali, keep warm and stir, react for 0.5-1 hours, then cool down to below 80℃ for later use; Step S3. After mixing the waste oil (9) obtained in step 2 with expanded ammonium nitrate, composite oil phase and wood powder evenly, package it to obtain the expanded explosive product.

2. The method for recycling emulsifier production waste as described in claim 1, characterized in that: In step S2, the strong base is sodium hydroxide.

3. The method for recycling emulsifier production waste as described in claim 1, characterized in that: In step S3, the components are mixed in the following weight ratios: expanded ammonium nitrate: 91-93%, wood flour: 3-5%, composite oil phase: 3.7-3.9%, and waste oil (9): 0.1-0.3%.

4. The method for recycling emulsifier production waste as described in claim 1, characterized in that: In step S3, the materials are mixed by the material mixing spiral (2).

5. The method for recycling emulsifier production waste as described in claim 4, characterized in that: In step S3, the order in which each material is added to the material mixing screw (2) is: expanded ammonium nitrate, wood flour, composite oil phase, and waste oil (9).

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