Safe treatment device for DMSO solution containing HMX

Abstract

The utility model relates to the field of explosive production wastewater treatment, in particular to a safe treatment device for a DMSO solution containing HMX. Comprising an alkali waste liquid tank, a preheater and a reactor, the alkali waste liquid tank and the preheater are respectively connected with the reactor through pipelines, and a liquid outlet of the reactor is connected to a liquid storage tank through a pipeline; an alkali liquor metering pump is connected to a pipeline connecting the alkali waste liquid tank and the reactor, and a waste liquid metering pump is connected to a pipeline connecting the preheater and the reactor; the preheater is provided with a waste liquid inlet, the preheater and the reactor are both connected with heaters, heat exchange cavities are formed in the outer walls of the preheater and the reactor, and the heaters are communicated with the heat exchange cavities of the preheater and the reactor through pipelines to form a loop to form a cyclic heating system; according to the device disclosed by the utility model, the alkali liquor and the DMSO solution containing HMX can be fully contacted and mixed in the tubular reactor, and the HMX in the solution is thoroughly decomposed, so that the DMSO reaches the recovery standard, the solvent utilization rate is improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment in the production of explosives, specifically to a safe treatment device for DMSO solution containing HMX. Background Technology

[0002] With the rapid development of modern chemical industry, chemically synthesized organic matter has caused serious pollution to the water environment, directly threatening human health. Among these, wastewater from explosives is a particularly harmful type of modern industrial wastewater. How to treat high-concentration explosives wastewater from arsenals has long been a concern. This wastewater contains high levels of nitro compounds such as octogen (HMX), which are chemically stable and difficult for common microorganisms to degrade, causing significant environmental damage. Furthermore, the nitro compounds in this type of wastewater easily accumulate in the soil, causing soil pollution. Therefore, wastewater treatment during explosives production is crucial. Finding suitable treatment technologies to reduce and eliminate environmental pollution also places higher demands on the applicability, economy, and reliability of these technologies.

[0003] Currently, wastewater treatment methods for explosives production include activated carbon adsorption, extraction, evaporation, incineration, partial biodegradation, and hydrolysis. However, activated carbon adsorption suffers from frequent saturation carbon regeneration, extraction and evaporation have high operating costs, incineration generates secondary pollution, and partial biodegradation and hydrolysis have poor treatment effects. Therefore, a new method is needed to achieve high removal rates and low operating costs. Summary of the Invention

[0004] This invention provides a safe treatment device for DMSO solution containing HMX to address the resource waste and environmental problems caused by the difficulty in treating wastewater from explosives.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a safe treatment device for DMSO solution containing HMX, comprising an alkaline waste liquid tank, a preheater, and a reactor. The alkaline waste liquid tank and the preheater are respectively connected to the reactor via pipelines. The outlet of the reactor is connected to a storage tank via a pipeline. An alkaline metering pump is connected to the pipeline connecting the alkaline waste liquid tank and the reactor, and a waste liquid metering pump is connected to the pipeline connecting the preheater and the reactor. The preheater is provided with a waste liquid inlet. Both the preheater and the reactor are connected to heaters. The outer walls of the preheater and the reactor are provided with heat exchange chambers. The heaters are connected to the heat exchange chambers of the preheater and the reactor via pipelines, forming a loop to constitute a circulating heating system. The heating medium in the heaters is heat transfer oil.

[0006] Working process and principle: The alkaline waste liquid produced in the alkaline waste liquid tank enters the reactor through the alkaline liquid metering pump. After being heated by the preheater, the waste liquid enters the reactor under the action of the waste liquid metering pump and mixes with the alkaline liquid. The alkaline liquid and the DMSO solution containing HMX are fully contacted and mixed in the tubular reactor, completely decomposing the HMX in the solution and making the DMSO meet the recycling standards.

[0007] Furthermore, explosion-proof flow meters are installed on the pipelines connected to the alkali waste liquid tank and the pipelines connected to the preheater.

[0008] Furthermore, thermometers are installed at both the inlet and outlet of the preheater and the reactor.

[0009] Furthermore, the alkaline waste liquid tank is made of 316L material, with a designed volume of 200L. The tank lid has an agitator, liquid inlet, thermometer inlet, condenser inlet, vent, and spare port. The agitator is equipped with a 220V / 750W explosion-proof motor connected to a PLC automatic control system, and features a double-layered, directly-mounted agitator with a 25mm outer diameter agitator rod. The condenser inlet is equipped with a Φ58x500mm double-layered glass cooling tube for material cooling. A flow meter is installed at the liquid inlet, and pneumatic glass valves are installed at the vent and spare ports.

[0010] Furthermore, the heater has a heating temperature range of room temperature to 200°C and a controller with two LED displays.

[0011] Furthermore, the preheater and the interior of the reactor are composed of uniformly arranged U-shaped tubes.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention enables alkaline solution and HMX-containing DMSO solution to fully contact and mix in a tubular reactor, completely decompose HMX in the solution, make DMSO meet the recovery standard, improve solvent utilization, and reduce production costs.

[0014] This invention improves the treatment efficiency of DMSO wastewater containing HMX while ensuring a safe treatment environment. It also holds promise for addressing problems encountered in treating wastewater containing other energetic materials. This device is suitable for treating wastewater containing explosives. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the DMSO solution safety treatment device containing HMX of this utility model.

[0016] The markings in the image are as follows:

[0017] 1-Alkali waste liquid tank, 2-Alkali liquid metering pump, 3-Waste liquid metering pump, 4-Heater, 5-Preheater, 6-Reactor. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments. Example 1

[0019] like Figure 1 As shown, a safe treatment device for DMSO solution containing HMX includes an alkaline waste liquid tank 1, a preheater 5, and a reactor 6. The alkaline waste liquid tank 1 and the preheater 5 are respectively connected to the reactor 6 via pipelines. The outlet of the reactor 6 is connected to a storage tank via a pipeline. An alkaline metering pump 2 is connected to the pipeline connecting the alkaline waste liquid tank 1 and the reactor 6, and a waste liquid metering pump 3 is connected to the pipeline connecting the preheater 5 and the reactor 6. The preheater 5 is provided with a waste liquid inlet. Both the preheater 5 and the reactor 6 are connected to heaters 4. The outer walls of the preheater 5 and the reactor 6 are provided with heat exchange chambers (i.e., sleeves). The heaters 4 are connected to the heat exchange chambers of the preheater 5 and the reactor 6 via pipelines. Specifically, the outlet of the heater 4 is connected to the inlet of the sleeve of the preheater 5, the outlet of the sleeve of the preheater 5 is connected to the inlet of the sleeve of the reactor 6, and the outlet of the sleeve of the reactor 6 is connected to the inlet of the heater 4. The above device constitutes a circulating heating system. The heating medium in the heater 4 is heat transfer oil, which heats the preheater and the reactor through pipelines. The circulating pipeline is fully enclosed, eliminating oil mist and water absorption, ensuring experimental safety and extending the lifespan of the heat transfer fluid. It features self-diagnostic capabilities, liquid level protection, and thermal overload protection, among other safety features. The temperature of the heat transfer medium is controlled, and the same medium is used throughout the entire heating and cooling process. It is water-cooled using a plate heat exchanger, ensuring rapid and reliable cooling. The high-lift design allows for long-distance transport of the heat transfer medium. Preheater 5 has three 1.5-meter jacketed pipes, totaling 7.5 meters. The high-temperature heat transfer medium flows through preheater 4 and reactor 6. After passing through preheater 4, the waste liquid's temperature rises, and the alkaline solution mixes with the waste liquid at a higher temperature in reactor 6, ensuring efficient HMX treatment of the wastewater.

[0020] Furthermore, explosion-proof flow meters are installed on the pipelines connected to the alkali waste liquid tank 1 and the pipelines connected to the preheater 5.

[0021] Furthermore, thermometers are installed at both the inlet and outlet of the preheater 5 and the reactor 6.

[0022] Furthermore, the alkaline waste liquid tank 1 is made of 316L material, with a designed volume of 200L. The tank lid has an agitator, liquid inlet, thermometer inlet, condenser inlet, vent, and spare port. The agitator is equipped with a 220V / 750W explosion-proof motor connected to a PLC automatic control system, featuring a double-layered, directly mounted agitator with a 25mm outer diameter agitator rod. The agitator is fitted with a high-quality base and bearings. The condenser inlet is equipped with a Φ58x500mm double-layered glass cooling tube for material cooling. The liquid inlet is equipped with a flow meter, and both the vent and spare ports are equipped with pneumatic glass valves. The explosion-proof metering pump includes PTFE inlet and outlet connectors, with the pipe material, specifications, and dimensions matched to the inlet and outlet flow rates. The diaphragm metering pump head is entirely made of PVDF, and the power supply is three-phase 380V 180W, with 4-20mA signal control for flow rate.

[0023] Reactor 6 is made of 316L stainless steel, with 40 DN25x1500mm pipes totaling 60 meters. They are installed in parallel in groups. The equipment inlet is equipped with an explosion-proof metering pump, flow meter, and pressure sensor. The outlet has a local temperature display.

[0024] This utility model device operates the processing unit through an explosion-proof control panel. The explosion-proof control panel is a 7-inch LCD screen, and the stirring motor, metering pump, flow meter, thermometer, pressure sensor, and explosion-proof high-temperature circulator are all integrated into the PLC control system.

[0025] Furthermore, heater 4 has a heating temperature range of room temperature to 200℃ and a controller with two LED displays. It can simultaneously display the set temperature, the actual temperature, and the over-temperature alarm value. It is highly efficient, fast, and easy to fill with liquid.

[0026] Furthermore, the preheater 5 and reactor 6 are equipped with uniformly arranged U-shaped tubes, which can fully exchange heat in the heat transfer medium and improve heat exchange efficiency.

[0027] The alkaline waste liquid in the alkaline waste liquid tank 1 is prepared by mixing solid NaOH with waste liquid, thereby improving the utilization rate of waste liquid. The outlet of the reactor 6 allows the treated waste liquid to be controlled and introduced into the alkaline waste liquid tank through pipelines and valves. The waste liquid treatment process is a liquid-liquid reaction, which ensures that the waste liquid and alkaline solution are fully mixed in the reactor, thereby improving the reaction efficiency.

[0028] Working process and principle: The alkaline waste liquid produced in the alkaline waste liquid tank 1 enters the reactor 6 through the alkaline liquid metering pump 2. After being heated by the preheater 5, the waste liquid enters the reactor 6 under the action of the waste liquid metering pump 3 and mixes with the alkaline liquid. The alkaline liquid and the DMSO solution containing HMX are fully contacted and mixed in the tubular reactor, completely decomposing the HMX in the solution and making the DMSO meet the recycling standards.

[0029] This invention not only improves the treatment efficiency of DMSO wastewater containing HMX, but also ensures that the treatment process is carried out in a safe environment. It also has the potential to solve the problems faced in the treatment of wastewater containing other energetic materials.

Claims

1. A safe treatment device for DMSO solution containing HMX, characterized in that, The system includes an alkaline waste liquid tank (1), a preheater (5), and a reactor (6). The alkaline waste liquid tank (1) and the preheater (5) are connected to the reactor (6) via pipelines. The outlet of the reactor (6) is connected to a storage tank via a pipeline. An alkaline metering pump (2) is connected to the pipeline connecting the alkaline waste liquid tank (1) and the reactor (6). A waste liquid metering pump (3) is connected to the pipeline connecting the preheater (5) and the reactor (6). The preheater (5) is provided with a waste liquid inlet. Both the preheater (5) and the reactor (6) are connected to heaters (4). The outer walls of the preheater (5) and the reactor (6) are provided with heat exchange chambers. The heaters (4) are connected to the heat exchange chambers of the preheater (5) and the reactor (6) via pipelines, forming a loop to constitute a circulating heating system. The heating medium in the heaters (4) is heat transfer oil.

2. The safety treatment device for DMSO solution containing HMX according to claim 1, characterized in that, Explosion-proof flow meters are installed on the pipeline connected to the alkali waste liquid tank (1) and the pipeline connected to the preheater (5).

3. The safety treatment device for DMSO solution containing HMX according to claim 1, characterized in that, The inlet and outlet of the preheater (5) and reactor (6) are both equipped with thermometers.

4. The safety treatment device for DMSO solution containing HMX according to claim 1, characterized in that, The alkaline waste liquid tank (1) is made of 316L material and has a designed volume of 200L. The tank cover has a stirring port, a liquid inlet, a thermometer port, a condenser port, a vent port, and a spare port. The stirring port is equipped with a 220V / 750W explosion-proof motor connected to a PLC automatic control system. It has a double-layer direct-hanging stirring paddle with an outer diameter of 25mm. The condenser port is equipped with a Φ58x500mm double-layer glass cooling pipe for cooling the material. The liquid inlet is equipped with a flow meter, and the vent port and spare port are equipped with pneumatic glass valves.

5. The safety treatment device for DMSO solution containing HMX according to claim 1, characterized in that, Heater (4) Heating temperature range: room temperature ~ 200℃, controller with 2 LED displays.

6. The safety treatment device for DMSO solution containing HMX according to claim 1, characterized in that, The preheater (5) and reactor (6) are filled with U-shaped tubes arranged in a uniform manner.

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