Insoluble sulfur production device

Abstract

The utility model belongs to the technical field of chemical equipment, and particularly relates to an insoluble sulfur production device. Comprising a liquid sulfur storage tank, a submerged centrifugal pump, a sulfur heating tank, a quenching device, a comprehensive kettle, a filling oil mixing machine and an automatic packaging machine which are sequentially connected, and the comprehensive kettle is connected with a carbon disulfide storage tank and an evaporator through pipelines respectively; the comprehensive kettle and the evaporator are respectively connected with a tube pass inlet of the tail gas heat exchanger through pipelines; a tube pass outlet of the tail gas heat exchanger is connected with tail gas treatment equipment through a pipeline; a shell pass outlet of the tail gas heat exchanger is sequentially connected with the circulating water heat exchanger and the carbon disulfide heat exchanger through pipelines. A tube pass outlet of the carbon disulfide heat exchanger is connected with the nitrogen storage tank through a pipeline. By optimizing a connection mode and an operation process, continuous and efficient operation of liquid sulfur treatment steps is realized, and meanwhile, the product quality is ensured; meanwhile, through cyclic utilization of nitrogen and recycling of carbon disulfide, the resource utilization efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and specifically relates to an insoluble sulfur production device. Background Art

[0002] In the production process of insoluble sulfur, traditional production equipment often has problems of high energy consumption and low resource utilization efficiency. Especially for the use of nitrogen, many devices only use it as a simple transportation medium and fail to give full play to its potential comprehensive utilization value. In the heating, transportation and tail gas treatment links, nitrogen is usually discharged after a single use, which not only causes a waste of resources, but also increases production costs.

[0003] In addition, when treating tail gas, traditional devices often lack an effective heat recovery mechanism, resulting in the loss of heat energy in the tail gas. At the same time, if the nitrogen in the tail gas is not properly treated, it will be directly discharged into the atmosphere and not fully utilized, further exacerbating the waste of nitrogen. Therefore, there is an urgent need for an insoluble sulfur production device that can efficiently utilize nitrogen resources, reduce energy consumption, improve heat recovery rate and optimize the washing liquid treatment process to overcome the shortcomings of the existing technology. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the utility model is to provide an insoluble sulfur production device, which realizes the continuous and efficient operation of the liquid sulfur treatment step by optimizing the connection mode and the operation process, while ensuring the product quality; at the same time, through the recycling of nitrogen and the recovery and reuse of carbon disulfide, the resource utilization efficiency is improved.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] The insoluble sulfur production device comprises a liquid sulfur storage tank, a submerged centrifugal pump, a sulfur heating tank, a quencher, an integrated kettle, a filling oil mixer and an automatic packaging machine which are connected in sequence. The integrated kettle is equipped with a washing liquid inlet and a washing liquid outlet, which are respectively connected to a carbon disulfide storage tank and an evaporator through pipelines; the tail gas outlets of the integrated kettle and the evaporator are respectively connected to the tube side inlet of the tail gas heat exchanger through pipelines, and the tube side outlet of the tail gas heat exchanger is connected to the tail gas treatment equipment through pipelines; the shell side outlet of the tail gas heat exchanger is sequentially connected to the tube side inlet of the circulating water heat exchanger and the tube side inlet of the carbon disulfide heat exchanger through pipelines, the tube side outlet of the carbon disulfide heat exchanger is connected to a nitrogen storage tank through pipelines, and the outlet of the nitrogen storage tank is respectively connected to the sulfur heating tank and the integrated kettle through pipelines.

[0007] The outlet of the nitrogen storage tank is also connected to the filling oil mixer, the automatic packaging machine, the carbon disulfide storage tank and the evaporator through pipelines.

[0008] The carbon disulfide discharge port of the evaporator is connected to the carbon disulfide storage tank through a pipeline.

[0009] The liquid sulfur outlet of the evaporator is connected to the sulfuric acid workshop through a liquid sulfur pipeline.

[0010] The shell side inlet of the tail gas heat exchanger is connected with a liquid nitrogen pipeline.

[0011] The shell side inlet of the carbon disulfide heat exchanger is connected to the carbon disulfide storage tank through a pipeline, and the shell side outlet of the carbon disulfide heat exchanger is connected to the quencher through a pipeline.

[0012] The inlet of the quencher and the filling oil mixer are respectively connected with stabilizer feeding pipelines.

[0013] The inlet of the filling oil mixer is also connected to a filling oil feed pipeline.

[0014] The working principle of the insoluble sulfur production device is as follows:

[0015] Liquid sulfur is first pumped into the sulfur heating tank by a submerged centrifugal pump to continue heating until the temperature reaches 300~450℃. Subsequently, nitrogen is used to push the heated liquid sulfur to the quencher, and a stabilizer is added to the quencher to blow away the liquid sulfur. The refined liquid sulfur is fully mixed with the low-temperature carbon disulfide from the carbon disulfide storage tank (maintained at 40~75℃ after heat exchange in the carbon disulfide heat exchanger) in the quencher. The mixture then enters the integrated kettle, and the separation device in the integrated kettle is started to crush the solid-liquid mixture to obtain a slurry mixture with a fineness that meets the process requirements. Next, hot water is passed into the jacket of the integrated kettle to mature the insoluble sulfur and eliminate the short-chain polymer insoluble sulfur with poor stability. After that, freshly prepared carbon disulfide is injected into the integrated kettle as a washing liquid to wash away the orthorhombic sulfur. The washing liquid produced during the washing process enters the evaporator, and the carbon disulfide separated in the evaporator is collected in the carbon disulfide storage tank. The separated liquid sulfur is transported to the sulfur acid workshop through the liquid sulfur pipeline for further application. After the washing is completed, the materials in the integrated kettle are vacuum dried and then transported to the filling oil mixer. In the filling oil mixer, stabilizers and process additives are added at the same time for mixing, and finally packaged and stored by an automatic packaging machine to obtain high-performance insoluble sulfur products.

[0016] The tail gas generated by the integrated kettle and the evaporator enters the tail gas heat exchanger through the pipeline, and exchanges heat with the -196℃ liquid nitrogen from the liquid nitrogen pipeline. The tail gas after heat exchange enters the tail gas treatment equipment for treatment. The temperature of the liquid nitrogen after heat exchange rises to -80~-60℃, and then enters the circulating water heat exchanger. The temperature of the liquid nitrogen after heat exchange with the circulating water rises to -50~-40℃, and then enters the carbon disulfide heat exchanger to exchange heat with the carbon disulfide entering the quencher from the carbon disulfide storage tank. Finally, the liquid nitrogen temperature rises to room temperature and is stored in the nitrogen storage tank. The nitrogen outlet of the nitrogen storage tank is connected to the sulfur heating tank and the integrated kettle through pipelines, respectively, to provide transportation power for the sulfur heating tank and the integrated kettle; at the same time, the nitrogen outlet of the nitrogen storage tank is also connected to the filling oil mixer, automatic packaging machine, carbon disulfide storage tank and evaporator through pipelines, and used as a protective gas.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] (1) The insoluble sulfur production device described in the utility model optimizes the connection mode and operation process of each component, so that the steps of heating, quenching, mixing, washing and drying of liquid sulfur can be carried out continuously and efficiently, thereby significantly improving the production efficiency. The device has a compact structure and a reasonable layout;

[0019] (2) The utility model realizes efficient energy utilization through the cooperation of the exhaust gas heat exchanger, the carbon disulfide heat exchanger and the circulating water heat exchanger. The heat in the exhaust gas is transferred to the liquid nitrogen through the exhaust gas heat exchanger. At the same time, the carbon disulfide heat exchanger is used to exchange the exhaust gas heat with the low-temperature carbon disulfide from the carbon disulfide storage tank, thereby further reducing energy consumption. After receiving the exhaust gas heat, the temperature of the liquid nitrogen gradually increases and is stored in the nitrogen storage tank, providing nitrogen with a suitable temperature for subsequent transportation and protection links, realizing the recycling of nitrogen, thereby greatly improving the resource utilization efficiency of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the insoluble sulfur production device described in the utility model;

[0021] In the figure: 1. Liquid sulfur storage tank; 2. Submersible centrifugal pump; 3. Sulfur heating tank; 4. Quencher; 5. Integrated kettle; 6. Filling oil mixer; 7. Automatic packaging machine; 8. Carbon disulfide storage tank; 9. Evaporator; 10. Exhaust gas heat exchanger; 11. Exhaust gas treatment equipment; 12. Carbon disulfide heat exchanger; 13. Nitrogen storage tank; 14. Liquid sulfur pipeline; 15. Liquid nitrogen pipeline; 16. Stabilizer feed pipeline; 17. Filling oil feed pipeline; 18. Circulating water heat exchanger. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] Example 1

[0024] like Figure 1 As shown, the insoluble sulfur production device comprises a liquid sulfur storage tank 1, a submerged centrifugal pump 2, a sulfur heating tank 3, a quencher 4, an integrated kettle 5, a filling oil mixer 6 and an automatic packaging machine 7 which are connected in sequence. The integrated kettle 5 is equipped with a washing liquid inlet and a washing liquid outlet, which are respectively connected to a carbon disulfide storage tank 8 and an evaporator 9 through pipelines; the tail gas outlets of the integrated kettle 5 and the evaporator 9 are respectively connected to the tube side inlet of a tail gas heat exchanger 10 through pipelines, and the tube side outlet of the tail gas heat exchanger 10 is connected to a tail gas treatment device 11 through a pipeline; the shell side outlet of the tail gas heat exchanger 10 is sequentially connected to the tube side inlet of a circulating water heat exchanger 18 and the tube side inlet of a carbon disulfide heat exchanger 12 through pipelines, the tube side outlet of the carbon disulfide heat exchanger 12 is connected to a nitrogen storage tank 13 through a pipeline, and the outlet of the nitrogen storage tank 13 is respectively connected to the sulfur heating tank 3 and the integrated kettle 5 through pipelines.

[0025] The outlet of the nitrogen storage tank 13 is also connected to the filling oil mixer 6, the automatic packaging machine 7, the carbon disulfide storage tank 8 and the evaporator 9 through pipelines.

[0026] The carbon disulfide outlet of the evaporator 9 is connected to the carbon disulfide storage tank 8 through a pipeline.

[0027] The liquid sulfur outlet of the evaporator 9 is connected to the sulfuric acid plant through a liquid sulfur pipeline 14 .

[0028] The shell side inlet of the tail gas heat exchanger 10 is connected to a liquid nitrogen pipeline 15 .

[0029] The shell side inlet of the carbon disulfide heat exchanger 12 is connected to the carbon disulfide storage tank 8 through a pipeline, and the shell side outlet of the carbon disulfide heat exchanger 12 is connected to the quencher 4 through a pipeline.

[0030] The inlet of the quencher 4 and the filling oil mixer 6 are respectively connected with a stabilizer feeding pipeline 16.

[0031] The inlet of the filling oil mixer 6 is also connected to a filling oil feed pipeline 17 .

[0032] When working, the specific steps are as follows:

[0033] First, liquid sulfur is pumped from the liquid sulfur storage tank 1 to the sulfur heating tank 3 through the submerged centrifugal pump 2, and is continuously heated until the temperature reaches 350±50°C. After the heating is completed, the heated liquid sulfur is pushed to the quencher 4 using nitrogen provided by the nitrogen storage tank 13. In the quencher 4, a stabilizer is added through the stabilizer feed pipeline 16 to blow the liquid sulfur and refine it. At this time, low-temperature carbon disulfide from the carbon disulfide storage tank 8 and maintained at 65±15°C after heat exchange in the carbon disulfide heat exchanger 12 also enters the quencher 4 and is fully mixed with the refined liquid sulfur.

[0034] The mixture then enters the integrated kettle 5, and the separation device in the integrated kettle 5 is started to crush the solid-liquid mixture to obtain a slurry mixture with a fineness that meets the process requirements. Next, hot water is passed into the jacket of the integrated kettle 5 to ripen the insoluble sulfur and eliminate the short-chain high-molecular insoluble sulfur with poor stability.

[0035] After the aging treatment is completed, freshly prepared carbon disulfide is injected from the carbon disulfide storage tank 8 into the integrated kettle 5 as a washing liquid to wash away the rhombic sulfur. The washing liquid generated during the washing process enters the evaporator 9, and the carbon disulfide separated in the evaporator 9 is collected back to the carbon disulfide storage tank 8, while the separated liquid sulfur is transported to the sulfuric acid workshop through the liquid sulfur pipeline 14 for further application.

[0036] After washing, the material in the integrated reactor 5 is vacuum dried. The dried material is transported to the filling oil mixer 6, where the stabilizer entering through the stabilizer feed line 16 and the process additive oil entering through the filling oil feed line 17 are added and mixed at the same time.

[0037] Finally, the uniformly mixed materials are packaged by an automatic packaging machine 7 and stored in a warehouse to obtain a high-performance insoluble sulfur product.

[0038] During the entire production process, the tail gas generated by the integrated kettle 5 and the evaporator 9 enters the tail gas heat exchanger 10 through the pipeline, and exchanges heat with the liquid nitrogen at a temperature of -196°C from the liquid nitrogen pipeline 15. The tail gas after heat exchange enters the tail gas treatment equipment 11 for treatment, and the temperature of the liquid nitrogen after heat exchange rises to -70±10°C, and then enters the circulating water heat exchanger 18, and the temperature of the liquid nitrogen rises to -45±5°C after heat exchange with the circulating water, and then enters the carbon disulfide heat exchanger 12, and exchanges heat with the carbon disulfide entering the quencher 4 from the carbon disulfide storage tank 8, and finally the temperature of the liquid nitrogen rises to room temperature and is stored back in the nitrogen storage tank 13. The nitrogen outlet of the nitrogen storage tank 13 is connected to the sulfur heating tank 3 and the integrated kettle 5 through pipelines, respectively, to provide transportation power for the sulfur heating tank 3 and the integrated kettle 5; at the same time, the nitrogen outlet of the nitrogen storage tank 13 is also connected to the filling oil mixer 6, the automatic packaging machine 7, the carbon disulfide storage tank 8 and the evaporator 9 through pipelines, respectively, to be used as a protective gas.

Claims

1. An insoluble sulfur production device, characterized in that: The invention comprises a liquid sulfur storage tank (1), a submerged centrifugal pump (2), a sulfur heating tank (3), a quencher (4), an integrated kettle (5), a filling oil mixer (6) and an automatic packaging machine (7) which are connected in sequence. The integrated kettle (5) is equipped with a washing liquid inlet and a washing liquid outlet, and the washing liquid inlet and the washing liquid outlet are respectively connected to a carbon disulfide storage tank (8) and an evaporator (9) through pipelines; the tail gas outlets of the integrated kettle (5) and the evaporator (9) are respectively connected to a tail gas heat exchanger (10) through pipelines. The tube side inlet of the tail gas heat exchanger (10) is connected, and the tube side outlet of the tail gas heat exchanger (10) is connected to the tail gas treatment equipment (11) through a pipeline; the shell side outlet of the tail gas heat exchanger (10) is connected to the tube side inlet of the circulating water heat exchanger (18) and the tube side inlet of the carbon disulfide heat exchanger (12) through pipelines in sequence, the tube side outlet of the carbon disulfide heat exchanger (12) is connected to the nitrogen storage tank (13) through a pipeline, and the outlet of the nitrogen storage tank (13) is connected to the sulfur heating tank (3) and the integrated kettle (5) through pipelines.

2. The insoluble sulfur production device according to claim 1, characterized in that: The outlet of the nitrogen storage tank (13) is also connected to the filling oil mixer (6), the automatic packaging machine (7), the carbon disulfide storage tank (8) and the evaporator (9) through pipelines.

3. The insoluble sulfur production device according to claim 1, characterized in that: The carbon disulfide discharge port of the evaporator (9) is connected to the carbon disulfide storage tank (8) via a pipeline.

4. The insoluble sulfur production device according to claim 1, characterized in that: The liquid sulfur outlet of the evaporator (9) is connected to the sulfuric acid plant via a liquid sulfur pipeline (14).

5. The insoluble sulfur production device according to claim 1, characterized in that: The shell side inlet of the tail gas heat exchanger (10) is connected to a liquid nitrogen pipeline (15).

6. The insoluble sulfur production device according to claim 1, characterized in that: The shell side inlet of the carbon disulfide heat exchanger (12) is connected to the carbon disulfide storage tank (8) through a pipeline, and the shell side outlet of the carbon disulfide heat exchanger (12) is connected to the quencher (4) through a pipeline.

7. The insoluble sulfur production device according to claim 1, characterized in that: The inlets of the quencher (4) and the filling oil mixer (6) are respectively connected to stabilizer feed pipelines (16).

8. The insoluble sulfur production device according to claim 1, characterized in that: The inlet of the filling oil mixer (6) is also connected to a filling oil feed pipeline (17).

Images