Sulfur recovery device

Abstract

The invention provides a sulfur recovery device. The reaction part is provided with a first reaction cavity as well as a first inlet, a second inlet and a product outlet which are communicated with the first reaction cavity; the feeding part comprises a first gas inlet pipeline, and the first gas inlet pipeline is configured to be used for introducing hydrogen sulfide gas into the first reaction cavity through the first inlet; the air inlet part is used for providing air for the second inlet; the sulfur collecting part comprises a receiving structure and a first collecting pipeline, and the first collecting pipeline is used for communicating the receiving structure with the product outlet; the air distribution ratio adjusting part comprises a controller and a temperature detection component, the temperature detection component is arranged on the first air inlet pipeline, the temperature detection component is in control connection with the controller, and the controller is in control connection with the air inlet part so as to control the flow of air introduced from the air inlet part to the second inlet. According to the technical scheme, the problem that in the prior art, a sulfur recovery device can affect adjustment of the air distribution ratio is solved.

Description

Technical Field

[0001] The invention relates to the technical field of sulfur recovery, and in particular to a sulfur recovery device. Background Art

[0002] Coal-based methanol process refers to the process of producing methanol through a series of chemical reaction processes using coal as raw material. The basic process of coal-based methanol process includes the following main steps: Step 1, gasification. In this process, coal reacts with oxygen and water under high pressure to produce synthesis gas. The main components of synthesis gas include CO, H2, CO2, H2O and a small amount of CH4, H2S and other gases. The equation of gasification reaction is: C+H2O=CO+H2; Step 2, transformation. During the transformation process, CO reacts with water vapor to produce more H2. The equation of transformation reaction is: CO+H2O(g)=CO2+H2 (exothermic reaction); Step 3, low-temperature methanol washing and purification, which is used to remove CO2, H2S and other impurities in the gas phase; Step 4, methanol synthesis and refining. The purified synthesis gas enters the methanol reactor under the compression of the gas compressor, and produces crude methanol under a certain pressure and catalyst. After the crude methanol passes through the separator, it passes through the methanol refiner to obtain a refined methanol product.

[0003] During the purification process, the generated H2S is sent to the sulfur recovery unit to generate sulfur and ensure that the SO2 content in the tail gas meets the standard. Sulfur recovery uses Claus sulfur recovery technology to treat acid gas containing H2S. Claus sulfur recovery technology is a chemical process used to treat acid gas containing hydrogen sulfide (H2S) and convert it into elemental sulfur. Claus sulfur recovery technology is realized through the Claus oxidation furnace. In the Claus oxidation furnace, 1 / 3 of H2S is oxidized into SO2 by air, and SO2 reacts with unconverted H2S to produce sulfur. The reaction equation is as follows: 2H2S+3O2=2SO2+2H2O; 2H2S+SO2=2H2O+3S; The air distribution ratio refers to the ratio of the amount of acid gas entering the Claus oxidation furnace to the amount of air entering the Claus oxidation furnace. Generally, the air distribution ratio is adjusted to control the H2S / SO2 after the reaction, so as to achieve the purpose of improving the sulfur conversion rate.

[0004] The air distribution ratio is generally adjusted by an online analyzer. The online analyzer of the sulfur recovery device is after the Claus oxidation furnace, reactor, and condenser, so it has a certain hysteresis. There are certain improvements in the prior art for the hysteresis. For example, CN204022473U discloses a sulfur recovery device H2S / SO2 ratio control system. This method effectively controls the H2S / SO2 ratio, so that the stability rate of the H2S / SO2 ratio in the sulfur production tail gas is improved and the sulfur content is reduced, thereby reducing the load of the subsequent tail gas hydrogenation treatment part, and finally reducing the sulfur content of the exhaust gas of the device, achieving significant economic and social benefits. CN109824017A discloses a sulfur recovery device and method based on Claus air distribution automatic adjustment. This method changes the traditional main air and auxiliary air independent double-loop control process. When the auxiliary air is over-adjusted, the change of the main air flow rate is adjusted to realize the air distribution system control, ensuring that the ratio of H2S and SO2 at the outlet of the Claus process reactor approaches the ideal reaction ratio, while promoting the auxiliary air flow range to return to a reasonable range. CN109850852A discloses a Claus air distribution control system based on a sulfur recovery device. This method first changes the location of the H2S / SO2 online analyzer from the exit of the Claus secondary reactor to the exit of the Claus primary reactor, thereby reducing the lag time of the detection feedback. The air distribution is controlled by the H2S content in the process gas, thereby alleviating the oscillation problem caused by the instability of the proportional control. Although the patent of CN109850852A changes the location of the online analyzer for detecting the gas content of H2S / SO2 from the exit of the Claus secondary reactor to the exit of the Claus primary reactor, thereby reducing the lag time of the detection feedback, it still cannot completely solve the problem of the lag in the detection feedback. CN113264508B discloses a sulfur recovery method and device, which simultaneously sets an acid gas component analyzer and a ratio analyzer. When the acid gas component changes, the concentration of the mixed gas of air and oxygen in the first conveying pipeline is timely adjusted by the first regulating valve, and the concentration of the mixed gas in the second conveying pipeline is timely adjusted by the second regulating valve, so that the sulfur recovery device maintains the best air distribution operation, thereby improving the sulfur recovery rate. CN116358298A discloses an industrial control system for a sulfur recovery device, which includes a main fan control system, an acid gas control system, an air-gas ratio control system and an online feedback control system. By comprehensively using the first flow detection component, the acid gas flow detection component, the second flow detection component and the gas online analyzer, the information of the air, fuel gas and acid gas generated by the reaction in and out of the sulfur recovery device is collected, which can effectively reduce the measurement error and improve the total sulfur recovery rate of the Claus sulfur recovery device.

[0005] However, when the temperature of the acid gas (H2S) is too high, the methanol in the upstream low-temperature methanol washing device will be carried into the Claus oxidation furnace. In this way, the methanol will consume oxygen in the Claus oxidation furnace, thereby reducing the oxygen content in the Claus oxidation furnace, which will not only reduce the content of sulfur generated in the Claus oxidation furnace, but also affect the adjustment of the air supply ratio. Summary of the invention

[0006] The main purpose of the present invention is to provide a sulfur recovery device to solve the problem that the sulfur recovery device in the prior art will affect the adjustment of the air distribution ratio.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a sulfur recovery device, which includes a reaction part, having a first reaction chamber and a first inlet, a second inlet and a product outlet connected to the first reaction chamber; a feeding part, including a first air inlet pipeline, the first air inlet pipeline is configured to pass hydrogen sulfide gas into the first reaction chamber through the first inlet; an air inlet part, used to provide air to the second inlet; a sulfur collecting part, including a receiving structure and a first collecting pipeline, the first collecting pipeline is used to connect the receiving structure with the product outlet; an air distribution ratio adjustment part, including a controller and a temperature detection component, the temperature detection component is arranged on the first air inlet pipeline, the temperature detection component is control-connected to the controller, and the controller is control-connected to the air inlet part to control the air flow rate passed from the air inlet part to the second inlet.

[0008] Furthermore, the air intake part includes: a second air intake pipeline, the air intake end of the second air intake pipeline is used to let in external air, and the air outlet end of the second air intake pipeline is connected to the second inlet; a fluid power component, the fluid power component is arranged on the second air intake pipeline; a regulating valve assembly, the regulating valve assembly is arranged on the second air intake pipeline, and the controller is controlled and connected with the regulating valve assembly and / or the fluid power component.

[0009] Furthermore, the regulating valve assembly includes a first regulating valve and a second regulating valve, and the flow regulation range of the first regulating valve is greater than the flow regulation range of the second regulating valve; or, the air intake part also includes a filter, the filter is arranged at the air intake end of the second air intake pipe, and the filter is used to filter the external air.

[0010] Furthermore, the feed part also includes: a feed pipeline, which is constructed to pass the mixed material; a gas-liquid separation structure, which has a first separation chamber and a feed port, a first liquid outlet and a first gas outlet connected to the first separation chamber, the first gas outlet is connected to the first gas inlet pipeline, and the feed port is connected to the feed pipeline.

[0011] Furthermore, the reaction section also has a combustion chamber and a third inlet and a fourth inlet connected to the combustion chamber. The combustion chamber and the first reaction chamber are arranged at intervals, and the combustion chamber is located on at least one side of the first reaction chamber. The sulfur recovery device also includes: a third air intake pipeline, one end of the third air intake pipeline is connected to the second air intake pipeline, and the other end of the third air intake pipeline is connected to the third inlet; a fourth air intake pipeline, one end of the fourth air intake pipeline is used to introduce fuel gas, and the other end of the fourth air intake pipeline is connected to the fourth inlet.

[0012] Furthermore, the reaction part includes: a reaction body, on which a first inlet, a second inlet and a first outlet are provided; a first conveying pipeline, a first end of the first conveying pipeline is connected to the first outlet, and a second end of the first conveying pipeline is provided with a product outlet; a first heat exchanger, the first heat exchanger is located at the periphery of the first conveying pipeline, and the first heat exchanger is used to cool the mixed material in the first conveying pipeline.

[0013] Furthermore, the sulfur recovery device also includes: a first pipeline, the second end of the first delivery pipeline is also provided with a gas outlet, and one end of the first pipeline is connected to the gas outlet; a first reactor, having a second reaction chamber and a fifth inlet and a second outlet connected to the second reaction chamber, the fifth inlet is connected to the other end of the first pipeline; a second delivery pipeline, including a first main pipe and a first branch pipe and a second branch pipe both connected to the first main pipe, the first main pipe is connected to the second outlet, the first branch pipe is connected to the receiving structure, and the second branch pipe is used to discharge gas; a second heat exchanger, the second heat exchanger is located on the periphery of the first main pipe, and the second heat exchanger is used to cool the mixed material in the first main pipe.

[0014] Furthermore, the sulfur recovery device also includes a second liquid inlet pipeline and a second gas outlet pipeline, the second heat exchanger has a second heat exchange chamber, one end of the second liquid inlet pipeline is connected to the low-pressure boiler, the other end of the second liquid inlet pipeline is connected to the second heat exchange chamber, one end of the second gas outlet pipeline is connected to the second heat exchange chamber, and the other end of the second gas outlet pipeline is used to discharge steam.

[0015] Furthermore, the sulfur recovery device also includes: a second reactor, having a third reaction chamber and a sixth inlet and a third outlet connected to the third reaction chamber, the sixth inlet being connected to the second branch pipe; a third delivery pipeline, including a second main pipe and a third branch pipe and a fourth branch pipe both connected to the second main pipe, the second main pipe being connected to the third outlet, the third branch pipe being connected to the receiving structure, and the fourth branch pipe being used to discharge gas; a third heat exchanger, the third heat exchanger being located at the periphery of the second branch pipe, and the third heat exchanger being used to heat the gas in the second branch pipe; and a fourth heat exchanger, the fourth heat exchanger being located at the periphery of the second main pipe, and the fourth heat exchanger being used to cool the mixed material.

[0016] Further, the sulfur recovery device also includes a third liquid inlet pipeline and a third gas outlet pipeline, the fourth heat exchanger has a third heat exchange chamber, one end of the third liquid inlet pipeline is connected to the low-pressure boiler, the other end of the third liquid inlet pipeline is connected to the third heat exchange chamber, one end of the third gas outlet pipeline is connected to the third heat exchange chamber, and the other end of the third gas outlet pipeline is used to discharge steam; or, the sulfur recovery device also includes: an analysis unit, which is arranged on the fourth branch pipe, the analysis unit is used to detect the gas content, and the controller is controlled and connected to the analysis unit; or, the sulfur recovery device also includes: a sulfur separation unit, which is arranged on the fourth branch pipe, the sulfur separation unit has a second liquid outlet; a fourth collecting pipeline, one end of the fourth collecting pipeline is connected to the receiving structure, and the other end of the fourth collecting pipeline is connected to the second liquid outlet, and the sulfur separation unit is used to separate the liquid sulfur in the fourth branch pipe from the fourth branch pipe and enter the receiving structure through the fourth collecting pipeline.

[0017] By applying the technical solution of the present invention, hydrogen sulfide gas is introduced into the first reaction chamber through the first inlet from the first air intake pipeline, and air enters the first reaction chamber from the second inlet. The hydrogen sulfide gas and the air react in the first reaction chamber. By setting a temperature detection component on the first air intake pipeline, when the temperature of the hydrogen sulfide gas in the first air intake pipeline increases, the temperature detection component transmits a signal to the controller, and the controller can immediately respond to the change in the temperature of the hydrogen sulfide gas and timely adjust the air flow rate of the air intake part entering the second inlet. In this way, methanol can be prevented from entering the first reaction chamber due to the increase in the gas temperature of hydrogen sulfide, thereby avoiding methanol from consuming air in the first reaction chamber. Not only can the problem of reduced sulfur production in the first reaction chamber be avoided, but also the problem of the air distribution ratio of hydrogen sulfide gas and air deviating from the optimal setting can be avoided. The present invention accurately compensates for the change in the air distribution ratio caused by the consumption of oxygen by methanol through the associated control of temperature and air flow, ensures that the reaction in the first reaction chamber is carried out under the most suitable conditions, and improves the conversion rate of sulfur. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic structural diagram of an embodiment of a sulfur recovery device of the present invention is shown;

[0020] Figure 2 Shows Figure 1 A graph of acid gas temperature and air usage for a sulfur recovery unit.

[0021] The above drawings include the following reference numerals:

[0022] 100, reaction part; 200, air intake part; 10, reaction body; 11, regeneration tower; 12, tail gas incineration part; 13, receiving structure; 14, sulfur granulator; 15, first air intake pipeline; 16, seventh air intake pipeline; 17, sixth air intake pipeline; 18, fourth air intake pipeline; 20, first reactor; 21, second air intake pipeline; 22, first heat exchanger; 23, second heat exchanger; 24, fourth heat exchanger; 25, third heat exchanger; 26, fourth collecting pipeline; 27, second branch pipe; 28, fifth pipeline; 29, reflux pipeline; 30, second reactor; 31, first liquid inlet pipeline; 32, second liquid inlet pipeline; 3 3. The first collecting pipeline; 34. The first branch pipe; 35. The third branch pipe; 36. The fifth air inlet pipeline; 37. The third liquid inlet pipeline; 38. The third air inlet pipeline; 40. The gas-liquid separation structure; 41. The second pipeline; 42. The feed pipeline; 43. The fourth branch pipe; 44. The central pipe; 45. The first pipeline; 46. The first air outlet pipeline; 47. The first main pipe; 48. The second air outlet pipeline; 49. The second main pipe; 50. The analysis unit; 51. The first liquid outlet pipeline; 52. The third air outlet pipeline; 53. The third pipeline; 55. The fourth pipeline; 60. The fluid power component; 70. The filter; 80. The sulfur separation unit; 90. The absorption tower. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] like Figure 1 As shown, an embodiment of the present invention provides a sulfur recovery device. The sulfur recovery device includes a reaction part 100, having a first reaction chamber and a first inlet, a second inlet and a product outlet connected to the first reaction chamber; a feed part, including a first air inlet pipeline 15, the first air inlet pipeline 15 is configured to pass hydrogen sulfide gas into the first reaction chamber through the first inlet; an air inlet part 200, used to provide air to the second inlet; a sulfur collection part, including a receiving structure 13 and a first collecting pipeline 33, the first collecting pipeline 33 is used to connect the receiving structure 13 with the product outlet; an air distribution ratio adjustment part, including a controller and a temperature detection component, the temperature detection component is arranged on the first air inlet pipeline 15, the temperature detection component is control-connected to the controller, and the controller is control-connected to the air inlet part 200 to control the air flow rate of the air inlet part 200 to the second inlet.

[0025] In the above technical solution, hydrogen sulfide gas is introduced into the first reaction chamber through the first inlet from the first air intake pipeline 15, and air enters the first reaction chamber from the second inlet. The hydrogen sulfide gas and the air react in the first reaction chamber. By setting a temperature detection component on the first air intake pipeline 15, when the temperature of the hydrogen sulfide gas in the first air intake pipeline 15 increases, the temperature detection component transmits a signal to the controller, and the controller can immediately respond to the change in the temperature of the hydrogen sulfide gas and timely adjust the air flow rate of the air intake part 200 entering the second inlet. In this way, it is possible to avoid methanol from entering the first reaction chamber due to the increase in the gas temperature of hydrogen sulfide, thereby avoiding methanol from consuming air in the first reaction chamber, which can not only avoid the problem of reduced sulfur production in the first reaction chamber, but also avoid the problem of the air ratio of hydrogen sulfide gas and air deviating from the optimal setting. The present invention accurately compensates for the change in the air ratio caused by the consumption of oxygen by methanol through the associated control of temperature and air flow, ensures that the reaction in the first reaction chamber is carried out under the most suitable conditions, and improves the conversion rate of sulfur.

[0026] Furthermore, in the embodiment of the present invention, the combination of the temperature detection component and the air distribution ratio adjustment unit provides greater flexibility for the operation of the sulfur recovery device. The technicians can make timely adjustments to the air flow rate entering the first reaction chamber by observing the gas temperature of hydrogen sulfide, thereby reducing the hysteresis of the dependence on the analysis unit 50 and enhancing the predictability and controllability of the sulfur recovery device.

[0027] Specifically, in the embodiment of the present invention, the reaction occurring in the first reaction chamber is a Claus reaction, which includes two stages: oxygen in the air entering the first reaction chamber reacts with 1 / 3 of H2S to generate SO2, and SO2 then reacts with unconverted H2S to produce sulfur. The reaction equation is as follows: 2H2S+3O2=2SO2+2H2O; 2H2S+SO2=2H2O+3S, the generated sulfur enters the receiving structure 13 through the product outlet from the first collecting pipeline 33, the receiving structure 13 is a sulfur aeration tank, the sulfur recovery device also includes a sulfur granulator 14, sulfur enters the sulfur granulator 14 after completing aeration in the receiving structure 13, the sulfur granulator 14 is a device for converting liquid sulfur into solid particles, the specific structure of the sulfur aeration tank and the sulfur granulator 14 can refer to the prior art, and will not be repeated here.

[0028] Specifically, in the embodiment of the present invention, the temperature detection component is a temperature sensor.

[0029] like Figure 1As shown, in an embodiment of the present invention, the air intake part 200 includes a second air intake pipeline 21, the air intake end of the second air intake pipeline 21 is used to introduce external air, and the air outlet end of the second air intake pipeline 21 is connected to the second inlet; a fluid power component 60, the fluid power component 60 is arranged on the second air intake pipeline 21; a regulating valve assembly, the regulating valve assembly is arranged on the second air intake pipeline 21, and the controller is controlled and connected with the regulating valve assembly and / or the fluid power component 60.

[0030] In the above technical solution, when the temperature of the hydrogen sulfide gas in the first air intake pipeline 15 increases, the temperature detection component transmits a signal to the controller. The controller can adjust the air flow entering the first reaction chamber by adjusting the rotation speed of the fluid power component 60 and / or the opening of the regulating valve assembly. In this way, on the one hand, it can prevent the higher temperature hydrogen sulfide gas from carrying methanol into the first reaction chamber, thereby preventing methanol from consuming air in the first reaction chamber to increase the sulfur yield. On the other hand, it can also compensate for the imbalance of the air distribution ratio caused by temperature changes, reduce control lag, and improve the reaction efficiency in the first reaction chamber.

[0031] Preferably, in the embodiment of the present invention, the fluid power component 60 is a fan.

[0032] In one embodiment, the fluid power component may also be a piston pump or a compressor or a diaphragm pump.

[0033] Specifically, in an embodiment of the present invention, when the temperature of the hydrogen sulfide gas increases and causes the methanol in the first reaction chamber to consume oxygen, the air flow entering the first reaction chamber is adjusted in time to ensure the optimization of the sulfur generation reaction, thereby reducing energy consumption and improving energy utilization efficiency.

[0034] like Figure 1 As shown, in an embodiment of the present invention, the regulating valve assembly includes a first regulating valve and a second regulating valve, and the flow regulating range of the first regulating valve is greater than the flow regulating range of the second regulating valve.

[0035] In the above technical solution, by setting the first regulating valve and the second regulating valve, dynamic control from large-scale regulation to fine-tuning of the air flow entering the first reaction chamber can be achieved. By using regulating valves with different adjustment ranges in combination, the best balance point can be found between large-range regulation and small-range regulation, thereby avoiding the control instability that may occur when a single regulating valve is adjusted drastically, thereby avoiding the phenomenon of affecting the sulfur yield.

[0036] Specifically, in the embodiment of the present invention, since the first regulating valve has a larger flow adjustment range, it is suitable for handling a larger range of air flow changes and can quickly respond to changes in air demand caused by large temperature fluctuations of hydrogen sulfide gas; the flow adjustment range of the second regulating valve is smaller and is more suitable for micro-adjustment. Through the synergistic effect of the first regulating valve and the second regulating valve, the regulating valve assembly can achieve more refined air flow control.

[0037] Specifically, in the embodiment of the present invention, the second air intake pipeline 21 includes a first air intake branch pipe and a second air intake branch pipe, the first regulating valve is arranged on the first air intake branch pipe, and the second regulating valve is arranged on the second air intake branch pipe, wherein the first regulating valve is a main process air regulating valve, and the second regulating valve is a secondary process air regulating valve, and the flow rate regulating range of the first regulating valve is 0-4000m 3 / h, the adjustment range of the second regulating valve is 0-800m 3 / h.

[0038] like Figure 1 As shown, in the embodiment of the present invention, the air intake portion 200 further includes a filter 70, and the filter 70 is disposed at the air intake end of the second air intake pipeline 21, and the filter 70 is used to filter the external air.

[0039] In the above technical solution, by setting the filter 70, the filter 70 can filter the external air entering the second air inlet pipe 21 of the sulfur recovery device, and can effectively remove impurities such as dust and particulate matter in the external air, and prevent these impurities from entering the first reaction chamber, thereby reducing interference with the sulfur generation process.

[0040] like Figure 1 As shown, in an embodiment of the present invention, the feed part also includes a feed pipeline 42, which is constructed to pass the mixed material; the gas-liquid separation structure 40 has a first separation chamber and a feed port, a first liquid outlet and a first gas outlet connected to the first separation chamber, the first gas outlet is connected to the first gas inlet pipeline 15, and the feed port is connected to the feed pipeline 42.

[0041] In the above technical solution, the mixed material enters the gas-liquid separation structure 40 from the feed pipeline 42, and the first separation chamber can separate the mixed material introduced from the feed pipeline 42. The separated gas enters the first reaction chamber from the first gas outlet through the first gas inlet pipeline 15 to react with the oxygen in the first reaction chamber to generate sulfur.

[0042] Specifically, in an embodiment of the present invention, the gas phase of the mixed material is an acidic gas, the components of the acidic gas are mainly H2S, N2 and CO2, the liquid phase of the mixed material is mainly methanol, and the gas-liquid separation structure 40 is a gas-liquid separation tank, which can separate liquid methanol from the mixed material so that the H2S in the acidic gas and the oxygen in the first reaction chamber can react to generate sulfur.

[0043] like Figure 1 As shown, in an embodiment of the present invention, the reaction part further has a combustion chamber and a third inlet and a fourth inlet connected to the combustion chamber, the combustion chamber and the first reaction chamber are arranged at intervals, and the combustion chamber is located on at least one side of the first reaction chamber, and the temperature-controlled sulfur recovery device also includes a third air intake pipeline 38, one end of the third air intake pipeline 38 is connected to the second air intake pipeline 21, and the other end of the third air intake pipeline 38 is connected to the third inlet; a fourth air intake pipeline 18, one end of the fourth air intake pipeline 18 is used to introduce fuel gas, and the other end of the fourth air intake pipeline 18 is connected to the fourth inlet.

[0044] In the above technical solution, external air enters the combustion chamber from the second air intake line 21 through the third air intake line 38 through the third inlet, and the fuel gas enters the combustion chamber from the fourth air intake line 18 through the fourth inlet. The external air and the fuel gas burn in the combustion chamber. In this way, the reaction temperature in the first reaction chamber can be increased, thereby increasing the sulfur yield.

[0045] Specifically, in an embodiment of the present invention, the fuel gas includes CO, H2 and CO2.

[0046] Specifically, in the embodiment of the present invention, since the combustion chamber is located around the first reaction chamber, uniform heat distribution can be provided to the first reaction chamber, thereby avoiding local overheating or uneven temperature of the first reaction chamber that causes a decrease in reaction efficiency.

[0047] In one embodiment, the combustion chamber may also be located on one circumferential side of the first reaction chamber.

[0048] In the prior art, the process of Claus reaction to generate sulfur is mainly divided into two stages: high-temperature thermal reaction and low-temperature catalytic reaction. The high-temperature thermal reaction is completed in the first reaction chamber, and the temperature is usually controlled between 950℃ and 1300℃. The low-temperature catalytic reaction is completed in the first reactor and the second reactor. The temperature of the first reactor is usually controlled between 230℃ and 270℃. This temperature range is conducive to the hydrolysis reaction of organic sulfur and ensures the recovery rate of sulfur. Therefore, it is necessary to cool the mixed material entering the first reactor. Therefore, if Figure 1As shown, in an embodiment of the present invention, the reaction part includes a reaction body 10, and the reaction body 10 is provided with a first inlet, a second inlet and a first outlet; a first delivery pipeline, the first end of the first delivery pipeline is connected to the first outlet, and the second end of the first delivery pipeline is provided with a product outlet; a first heat exchanger 22, the first heat exchanger 22 is located on the periphery of the first delivery pipeline, and the first heat exchanger 22 is used to cool the mixed material in the first delivery pipeline.

[0049] In the above technical solution, after the hydrogen sulfide gas and the air react in the reaction body 10, the reaction products and the incompletely reacted reactants form a mixed material and enter the first conveying pipeline. The first heat exchanger 22 can cool the mixed material in the first conveying pipeline. In this way, the mixed material can be cooled before entering the first reactor, so as to increase the yield of sulfur.

[0050] Specifically, in the embodiment of the present invention, the reaction body 10 has the above-mentioned first reaction chamber.

[0051] Specifically, in an embodiment of the present invention, the sulfur recovery device also includes a first liquid inlet pipeline 31 and a first gas outlet pipeline 46, the first heat exchanger 22 has a first heat exchange chamber, one end of the first liquid inlet pipeline 31 is connected to the low-pressure boiler, the other end of the first liquid inlet pipeline 31 is connected to the first heat exchange chamber, one end of the first gas outlet pipeline 46 is connected to the first heat exchange chamber, and the other end of the first gas outlet pipeline 46 is used to discharge steam.

[0052] In the above technical solution, the high-temperature mixed material in the reaction body 10 enters the first conveying pipeline through the first outlet, and the liquid in the low-pressure boiler enters the first heat exchange chamber through the first liquid inlet pipeline 31. The high-temperature mixed material exchanges heat with the liquid, and the high-temperature mixed material transfers heat to the liquid. The liquid temperature rises and turns into steam, and the steam is discharged through the first gas outlet pipeline 46, and the temperature of the mixed material is reduced. In this way, the mixed material can be cooled before entering the first reactor, so as to increase the yield of sulfur.

[0053] Specifically, in the embodiment of the present invention, the liquid in the low-pressure boiler is water, and the steam discharged from the first gas outlet pipeline 46 is low-pressure steam, which is sent to the steam network for recovery.

[0054] Preferably, in the embodiment of the present invention, the first heat exchanger 22 is a plate heat exchanger.

[0055] In the prior art, the reaction equation of the first reactor is: 2H2S+SO2=2H2O+3S. Since the temperature of the first reactor is usually controlled between 230°C and 270°C, the product after the reaction of the first reactor is gaseous. Therefore, it is necessary to cool the mixed material after the reaction to convert the gaseous sulfur into liquid sulfur, and then recover the liquid sulfur through the receiving structure 13. Therefore, Figure 1 As shown, in the embodiment of the present invention, the sulfur recovery device also includes a first pipeline 45, the second end of the first delivery pipeline is also provided with a gas outlet, and one end of the first pipeline 45 is connected to the gas outlet; the first reactor 20 has a second reaction chamber and a fifth inlet and a second outlet connected to the second reaction chamber, and the fifth inlet is connected to the other end of the first pipeline 45; the second delivery pipeline includes a first main pipe 47 and a first branch pipe 34 and a second branch pipe 27 both connected to the first main pipe 47, the first main pipe 47 is connected to the second outlet, the first branch pipe 34 is connected to the receiving structure 13, and the second branch pipe 27 is used to discharge gas; the second heat exchanger 23, the second heat exchanger 23 is located on the periphery of the first main pipe 47, and the second heat exchanger 23 is used to cool the mixed material in the first main pipe 47.

[0056] In the above technical solution, the incompletely reacted gas (H2S and SO2) after being cooled by the first heat exchanger 22 is transported to the first reactor 20 through the first pipeline 45 through the fifth inlet, and reacts in the first reactor 20. The reaction products and the incompletely reacted reactants form a mixed material, which enters the first main pipe 47 through the second outlet. The second heat exchanger 23 is used to cool the mixed material after the reaction in the first reactor 20 to convert gaseous sulfur into liquid sulfur. The cooled gas is discharged through the second branch pipe 27, and the liquid sulfur flows to the receiving structure 13 through the first branch pipe 34.

[0057] Specifically, in the embodiment of the present invention, the second heat exchanger 23 is a waste heat recovery device.

[0058] Specifically, in an embodiment of the present invention, the sulfur recovery device also includes a central tube 44, one end of the central tube 44 is connected to the first outlet, and the other end of the central tube 44 is connected to the first pipeline 45. The high-temperature mixed material in the central tube 44 is mixed with the mixed material cooled by the first heat exchanger 22, so that the temperature of the mixed material can be adjusted.

[0059] like Figure 1 As shown, in an embodiment of the present invention, the sulfur recovery device also includes a second liquid inlet pipeline 32 and a second gas outlet pipeline 48, the second heat exchanger 23 has a second heat exchange chamber, one end of the second liquid inlet pipeline 32 is connected to the low-pressure boiler, the other end of the second liquid inlet pipeline 32 is connected to the second heat exchange chamber, one end of the second gas outlet pipeline 48 is connected to the second heat exchange chamber, and the other end of the second gas outlet pipeline 48 is used to discharge steam.

[0060] In the above technical solution, the mixed material of the first reactor 20 enters the first main pipe 47 through the second outlet, and the liquid in the low-pressure boiler enters the second heat exchange chamber through the second liquid inlet pipe 32. The mixed material exchanges heat with the liquid, and the mixed material transfers heat to the liquid. The liquid temperature rises and turns into steam, and the steam is discharged through the second gas outlet pipe 48. The temperature of the mixed material decreases, so that the gaseous sulfur turns into liquid sulfur. The cooled gas is discharged through the second branch pipe 27, and the liquid sulfur flows into the receiving structure 13 through the first branch pipe 34.

[0061] Specifically, in an embodiment of the present invention, the steam discharged from the second outlet pipe 48 is low-pressure steam, which is sent into the steam network. Low-pressure steam refers to steam used in industrial production processes with a pressure lower than the pressure level of conventional low-pressure steam, usually lower than 0.5 bar (approximately equal to 0.5 atmospheres).

[0062] After the second heat exchanger 23 cools the gas in the second branch pipe 27, since the temperature of the second-stage reactor is usually controlled between 230°C and 270°C, it is necessary to heat the gas in the second branch pipe 27. Figure 1 As shown, in the embodiment of the present invention, the sulfur recovery device further includes a third heat exchanger 25 , which is located at the outer periphery of the second branch pipe 27 , and is used to heat the gas in the second branch pipe 27 .

[0063] In the above technical solution, the third heat exchanger 25 can heat the gas in the second branch pipe 27 to increase the temperature of the gas in the second branch pipe 27, thereby improving the reaction efficiency.

[0064] Specifically, in an embodiment of the present invention, the third heat exchanger 25 is a plate heat exchanger, and the third heat exchanger 25 has a fourth heat exchange chamber. The sulfur recovery device also includes a fifth air inlet pipeline 36 and a first liquid outlet pipeline 51. One end of the fifth air inlet pipeline 36 is used to pass medium-pressure steam, and the temperature of the medium-pressure steam is between 380°C and 420°C. The other end of the fifth air inlet pipeline 36 is connected to the fourth heat exchange chamber, and one end of the first liquid outlet pipeline 51 is connected to the fourth heat exchange chamber. The other end of the first liquid outlet pipeline 51 is used to discharge condensed water. The medium-pressure steam is passed into the fourth heat exchange chamber through the fifth air inlet pipeline 36, and the gas in the second branch pipe 27 exchanges heat with the medium-pressure steam. The gas in the second branch pipe 27 is heated, and the medium-pressure steam is cooled and condensed and then discharged through the first liquid outlet pipeline 51.

[0065] In the prior art, the reaction equation of the second stage reactor is: 2H2S+SO2=2H2O+3S. Since the temperature of the second stage reactor is usually controlled between 230°C and 270°C, the product after the reaction of the second stage reactor is gaseous. Therefore, it is necessary to cool the mixture after the reaction to convert the gaseous sulfur into liquid sulfur, and then recover the liquid sulfur through the receiving structure 13. Therefore, Figure 1 As shown, in the embodiment of the present invention, the sulfur recovery device also includes a second reactor 30, having a third reaction chamber and a sixth inlet and a third outlet connected to the third reaction chamber, the sixth inlet is connected to the second branch pipe 27; a third transport pipeline, including a second main pipe 49 and a third branch pipe 35 and a fourth branch pipe 43 both connected to the second main pipe 49, the second main pipe 49 is connected to the third outlet, the third branch pipe 35 is connected to the receiving structure 13, and the fourth branch pipe 43 is used to discharge gas; a fourth heat exchanger 24, the fourth heat exchanger 24 is located on the periphery of the second main pipe 49, and the fourth heat exchanger 24 is used to cool the mixed material.

[0066] In the above technical solution, the mixed material after being cooled by the second heat exchanger 23 and heated by the third heat exchanger 25 is transported to the second reactor 30 through the second branch pipe 27 through the sixth inlet, and reacts in the second reactor 30. The product generated by the reaction and the reactant that has not reacted completely form a mixed material. The mixed material enters the second main pipe 49 through the third outlet. The fourth heat exchanger 24 is used to cool the mixed material after the reaction in the second reactor 30 to convert gaseous sulfur into liquid sulfur. The cooled gas is discharged through the fourth branch pipe 43, and the liquid sulfur flows to the receiving structure 13 through the third branch pipe 35.

[0067] Specifically, in the embodiment of the present invention, the first reactor 20 is a one-stage reactor, and the second reactor 30 is a two-stage reactor.

[0068] like Figure 1 As shown, in an embodiment of the present invention, the sulfur recovery device also includes a third liquid inlet pipeline 37 and a third gas outlet pipeline 52, the fourth heat exchanger 24 has a third heat exchange chamber, one end of the third liquid inlet pipeline 37 is connected to the low-pressure boiler, the other end of the third liquid inlet pipeline 37 is connected to the third heat exchange chamber, one end of the third gas outlet pipeline 52 is connected to the third heat exchange chamber, and the other end of the third gas outlet pipeline 52 is used to discharge steam.

[0069] In the above technical solution, the mixed material in the second reactor 30 enters the second main pipe 49 through the third outlet, and the liquid in the low-pressure boiler enters the third heat exchange chamber through the third liquid inlet pipe 37. The mixed material exchanges heat with the liquid, and the mixed material transfers heat to the liquid. The liquid temperature rises and turns into steam, and the steam is discharged through the third gas outlet pipe 52. The temperature of the mixed material decreases, so that the gaseous sulfur turns into liquid sulfur. The cooled gas is discharged through the fourth branch pipe 43, and the liquid sulfur flows into the receiving structure 13 through the third branch pipe 35.

[0070] Specifically, in the embodiment of the present invention, the fourth heat exchanger 24 is a plate heat exchanger, and the steam discharged from the third gas outlet pipeline 52 is sent to the steam network for recovery.

[0071] like Figure 1 As shown, in the embodiment of the present invention, the sulfur recovery device further includes an analysis unit 50 disposed on the fourth branch pipe 43 . The analysis unit 50 is used to detect the content of the gas, and the controller is control-connected to the analysis unit 50 .

[0072] In the above technical solution, by providing the analysis unit 50, the gas content of the fourth branch pipe 43 can be detected, and the air intake of the external air into the first reaction chamber can be adjusted according to the gas content, thereby improving the yield of sulfur.

[0073] Specifically, in the embodiment of the present invention, the analysis unit 50 is a H2S / SO2 analyzer. The specific structure of the H2S / SO2 analyzer can refer to the prior art and will not be described in detail here.

[0074] Specifically, in the embodiment of the present invention, the content of H2S and SO2 is detected by the analysis unit 50. When the H2S content is high and the SO2 content is low, the intake of external air is increased; when the H2S content is low and the SO2 content is high, the amount of external air is reduced.

[0075] Since it is difficult to separate all the sulfur generated during the reaction of the reaction body 10, the first reactor 20 and the second reactor 30, Figure 1 As shown, in an embodiment of the present invention, the sulfur recovery device also includes a sulfur separation unit 80, which is arranged on the fourth branch pipe 43, and the sulfur separation unit 80 has a second liquid outlet; a fourth collecting pipeline 26, one end of the fourth collecting pipeline 26 is connected to the receiving structure 13, and the other end of the fourth collecting pipeline 26 is connected to the second liquid outlet, and the sulfur separation unit 80 is used to separate the liquid sulfur in the fourth branch pipe 43 from the fourth branch pipe 43 and enter the receiving structure 13 through the fourth collecting pipeline 26.

[0076] In the above technical solution, the sulfur separation unit 80 can separate the unseparated liquid sulfur in the reaction body 10, the first reactor 20 and the second reactor 30, so as to ensure the full recovery of sulfur. The liquid sulfur enters the receiving structure 13 through the fourth collecting pipeline 26 from the fourth liquid outlet.

[0077] Specifically, in the embodiment of the present invention, the sulfur separation unit 80 is a sulfur separator. The specific structure of the sulfur separator can refer to the prior art and will not be described in detail here.

[0078] Specifically, in an embodiment of the present invention, the sulfur recovery device also includes a hydrogenation reactor, which is arranged on the fourth branch pipe 43 and downstream of the analysis unit 50. The hydrogenation reactor is used to treat the sulfides that are not completely converted in the gas in the fourth branch pipe 43. After the hydrogenation reaction, the sulfides in the tail gas are converted into hydrogen sulfide.

[0079] Specifically, in an embodiment of the present invention, the sulfur recovery unit also includes a quenching tower, which is arranged on the fourth branch pipe 43 and arranged downstream of the hydrogenation reactor. The function of the quenching tower is to cool the high-temperature gas from the hydrogenation reactor to create suitable temperature conditions for the subsequent absorption process. Its working process is as follows: the high-temperature gas is transported from the hydrogenation reactor to the quenching tower, and the high-temperature gas is contacted by spraying a cooling liquid (such as water or a coolant) to absorb the heat of the high-temperature gas, thereby reducing the temperature of the high-temperature gas. The quenching tower is usually equipped with a temperature control device to ensure that the high-temperature gas is cooled to a suitable absorption temperature to prevent hydrogen sulfide from being re-gasified at an excessively high temperature. After the high-temperature gas is cooled, the droplets that may be carried in the high-temperature gas are separated by a demister or a cyclone separator to prevent the droplets from affecting the subsequent absorption process.

[0080] Specifically, in an embodiment of the present invention, the sulfur recovery device further includes an absorption tower 90, a regeneration tower 11, a second pipeline 41 and a third pipeline 53. The absorption tower 90 is used to absorb the hydrogen sulfide cooled from the quenching tower. The interior of the absorption tower 90 is filled with an absorption liquid, such as an amine solution. The amine solution can react with the hydrogen sulfide in the cooled gas. The cooled gas enters the absorption tower 90 and contacts with the absorption liquid in a countercurrent or bubbling manner. The hydrogen sulfide in the gas is absorbed by the absorption liquid to form a hydrogen sulfide-rich solution. The function of the regeneration tower 11 is to regenerate the hydrogen sulfide-rich solution in the absorption tower 90. The process is as follows: the hydrogen sulfide-rich solution in the absorption tower 90 is sent into the regeneration tower 11, and hydrogen sulfide is desorbed from the solution by heating (such as steam heating). In this way, hydrogen sulfide and the amine solution are desorbed and separated, and the amine solution after desorbing hydrogen sulfide is sent back to the absorption tower 90 so that the absorption tower 90 can absorb hydrogen sulfide again. The absorption tower 90 and the regeneration tower 11 are connected by a third pipeline 53, and the third pipeline 53 can transport the hydrogen sulfide-rich solution of the absorption tower 90 to the regeneration tower 11. The absorption tower 90 and the regeneration tower 11 are connected by a second pipeline 41, and the second pipeline 41 can return the amine solution after desorbing hydrogen sulfide to the absorption tower 90.

[0081] Specifically, in an embodiment of the present invention, the sulfur recovery device also includes a reflux pipeline 29, one end of the reflux pipeline 29 is connected to the regeneration tower 11, and the other end of the reflux pipeline 29 is connected to the feed pipeline 42. Since hydrogen sulfide and the amine solution are desorbed and separated in the regeneration tower 11, the desorbed hydrogen sulfide flows back to the feed pipeline 42 through the reflux pipeline 29 to generate sulfur again.

[0082] Specifically, in an embodiment of the present invention, the sulfur recovery device also includes a tail gas incineration section 12 and a fourth pipeline 55. The tail gas incineration section 12 is a tail gas incineration furnace. One end of the fourth pipeline 55 is connected to the absorption tower 90, and the other end of the fourth pipeline 55 is connected to the tail gas incineration section 12. The absorption tower 90 can absorb hydrogen sulfide in the gas cooled from the quenching tower. The SO2 that is not absorbed in the absorption tower 90 is transported to the tail gas incineration section 12 through the fourth pipeline 55 for incineration, and is discharged into the atmosphere through the chimney after incineration.

[0083] Specifically, in an embodiment of the present invention, the sulfur recovery device also includes a fifth pipeline 28 and a third regulating valve. One end of the fifth pipeline 28 is connected to the fourth branch pipe 43, and the other end of the fifth pipeline 28 is connected to the tail gas incineration part 12. The third regulating valve is arranged on the fifth pipeline 28. When the absorption tower 90 or the regeneration tower 11 fails, the third regulating valve is opened, and the gas directly enters the tail gas incineration part 12 for incineration, and is discharged into the atmosphere through the chimney after incineration.

[0084] Specifically, in an embodiment of the present invention, the sulfur recovery device further includes a sixth air intake pipeline 17 and a seventh air intake pipeline 16. The seventh air intake pipeline 16 is used to introduce oxygen into the first reaction chamber. The introduction of oxygen can increase the temperature in the first reaction chamber. However, in the actual operation of the sulfur recovery device, since it does not meet safety requirements, the seventh air intake pipeline 16 is not put into use. The sixth air intake pipeline 17 is used to introduce SWS (sour water stripping gas) gas into the first reaction chamber.

[0085] Specifically, in the embodiment of the present invention, Aspen Plus software is used to simulate the amount of methanol carried by the acid gas when the temperature changes. Among them, the physical property method is NRTL, the gas-liquid separation structure 40 adopts the Flash2 module, and the parameters of the gas-liquid separation structure 40 are shown in the following table:

[0086] Temperature / ℃ 40 Pressure / MPa 0.25

[0087] Specifically, in the embodiment of the present invention, when the temperature of the acid gas is 71.3° C., the content of the acid gas is as shown in the following table:

[0088]

[0089] Specifically, in the embodiment of the present invention, sensitivity analysis was performed using Aspen Plus, and the relationship between the methanol concentration in the acid gas and the acid gas temperature was obtained as shown in the following table:

[0090]

[0091] When methanol enters the first reaction chamber, the reaction equation is: 2CH3OH+3O2=2CO2+4H2O; therefore, it can be calculated that when the acid gas flow rate is 5000Nm 3 / h, when the volume content of oxygen in the air is 20.9%, the external air flow rate consumed corresponding to different acid gas temperatures can be calculated, as shown in the following table:

[0092]

[0093] Specifically, Figure 2 As shown in the embodiment of the present invention, the data in the above table are made into a curve graph using oringe software, wherein the horizontal axis is the temperature of the acid gas, the vertical axis is the consumed external air flow rate, and the formula for the amount of air consumed by carrying methanol corresponding to the acid gas temperature is fitted as follows: V = exp(6.78603 + 0.05967t + 7.14961*10 -5 t 2 ), where t is the acid gas temperature and V is the amount of air consumed by methanol.

[0094] Specifically, in the embodiment of the present invention, since the temperature detected in the above table is the low-temperature methanol washing device upstream of the sulfur recovery device, according to the actual temperature measurement on site, the temperature detected by the temperature detection component on the first air intake pipeline 15 is 15°C lower than the temperature detected by the low-temperature methanol washing device, and the above formula is based on the acid gas flow rate of 5000Nm 3 / h. Therefore, the formula for the acid gas temperature and the amount of air consumed to carry methanol is: V = (V1 / 5000) exp[6.78603+0.05967(t-15)+7.14961*10-5(t-15) 2 ], where t is the acid gas temperature and V is the amount of air consumed by methanol.

[0095] Specifically, in the embodiment of the present invention, in the actual operation of the sulfur recovery device, the amount of external air that needs to be consumed when the acid gas temperature changes is as shown in the following table:

[0096]

[0097] Specifically, in the embodiment of the present invention, it is verified through the actual operation of the sulfur recovery device that the deviation between the actual external air consumption and the fitted external air consumption is not large, which can better guide the actual operation.

[0098] From the above description, it can be seen that the above embodiment of the present invention achieves the following technical effects: hydrogen sulfide gas is introduced into the first reaction chamber through the first inlet from the first air intake pipeline, air enters the first reaction chamber from the second inlet, and hydrogen sulfide gas and air react in the first reaction chamber. By setting a temperature detection component on the first air intake pipeline, when the temperature of the hydrogen sulfide gas in the first air intake pipeline increases, the temperature detection component transmits a signal to the controller, and the controller can immediately respond to the change in the temperature of the hydrogen sulfide gas and timely adjust the air flow rate of the air intake part entering the second inlet. In this way, methanol can be prevented from entering the first reaction chamber due to the increase in the gas temperature of hydrogen sulfide, thereby avoiding methanol from consuming air in the first reaction chamber, which can not only avoid the problem of reduced sulfur production in the first reaction chamber, but also avoid the problem of the air ratio of hydrogen sulfide gas and air deviating from the optimal setting. The present invention accurately compensates for the change in the air ratio caused by the consumption of oxygen by methanol through the associated control of temperature and air flow, ensures that the reaction in the first reaction chamber is carried out under the most suitable conditions, and improves the conversion rate of sulfur.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sulfur recovery device, characterized in that: include: A reaction part (100) having a first reaction chamber and a first inlet, a second inlet and a product outlet communicated with the first reaction chamber; A feed section, comprising a first air intake pipeline (15), wherein the first air intake pipeline (15) is configured to pass hydrogen sulfide gas into the first reaction chamber through the first inlet; An air intake portion (200), configured to provide air to the second inlet; A sulfur collecting part, comprising a receiving structure (13) and a first collecting pipeline (33), wherein the first collecting pipeline (33) is used to connect the receiving structure (13) with the product outlet; The air distribution ratio adjustment unit comprises a controller and a temperature detection component, wherein the temperature detection component is arranged on the first air intake pipeline (15), the temperature detection component is control-connected to the controller, and the controller is control-connected to the air intake unit (200) to control the air flow rate of the air intake unit (200) entering the second inlet.

2. The sulfur recovery device according to claim 1, characterized in that: The air intake portion (200) comprises: A second air inlet pipeline (21), wherein an air inlet end of the second air inlet pipeline (21) is used to allow external air to enter, and an air outlet end of the second air inlet pipeline (21) is connected to the second inlet; a fluid power component (60), wherein the fluid power component (60) is arranged on the second air intake pipeline (21); A regulating valve assembly is provided on the second air intake pipeline (21); the controller is controllably connected to the regulating valve assembly and / or the fluid power component (60).

3. The sulfur recovery device according to claim 2, characterized in that: The regulating valve assembly comprises a first regulating valve and a second regulating valve, wherein the flow regulating range of the first regulating valve is greater than the flow regulating range of the second regulating valve; or, the air intake portion (200) further comprises a filter (70), wherein the filter (70) is arranged at the air intake end of the second air intake pipeline (21), and the filter (70) is used to filter the external air.

4. The sulfur recovery unit according to any one of claims 1 to 3, characterized in that: The feeding section also includes: A feed pipeline (42), wherein the feed pipeline (42) is configured to pass the mixed material; The gas-liquid separation structure (40) comprises a first separation chamber and a feed port, a first liquid outlet and a first gas outlet connected to the first separation chamber, wherein the first gas outlet is connected to the first gas inlet pipeline (15), and the feed port is connected to the feed pipeline (42).

5. The sulfur recovery device according to claim 2, characterized in that: The reaction part further comprises a combustion chamber and a third inlet and a fourth inlet communicated with the combustion chamber, the combustion chamber and the first reaction chamber are arranged at intervals, and the combustion chamber is located at at least one side of the first reaction chamber, and the sulfur recovery device further comprises: a third air intake pipeline (38), one end of the third air intake pipeline (38) being in communication with the second air intake pipeline (21), and the other end of the third air intake pipeline (38) being in communication with the third inlet; A fourth air intake pipeline (18), one end of which is used to introduce fuel gas, and the other end of which is connected to the fourth inlet.

6. The sulfur recovery unit according to any one of claims 1 to 3, characterized in that: The reaction unit (100) comprises: A reaction body (10), wherein the reaction body (10) is provided with the first inlet, the second inlet and a first outlet; a first delivery pipeline, wherein a first end of the first delivery pipeline is connected to the first outlet, and a second end of the first delivery pipeline is provided with the product outlet; A first heat exchanger (22), the first heat exchanger (22) is located on the outer periphery of the first conveying pipeline, and the first heat exchanger (22) is used to cool the mixed material in the first conveying pipeline.

7. The sulfur recovery device according to claim 6, characterized in that: The sulfur recovery unit also includes: A first pipeline (45), wherein a second end of the first delivery pipeline is further provided with a gas outlet, and one end of the first pipeline (45) is in communication with the gas outlet; A first reactor (20) having a second reaction chamber, a fifth inlet communicating with the second reaction chamber, and a second outlet, wherein the fifth inlet is communicated with the other end of the first pipeline (45); a second delivery pipeline, comprising a first main pipe (47) and a first branch pipe (34) and a second branch pipe (27) both of which are in communication with the first main pipe (47), the first main pipe (47) being in communication with the second outlet, the first branch pipe (34) being in communication with the receiving structure (13), and the second branch pipe (27) being used for discharging gas; A second heat exchanger (23), the second heat exchanger (23) is located on the periphery of the first main pipe (47), and the second heat exchanger (23) is used to cool the mixed material in the first main pipe (47).

8. The sulfur recovery device according to claim 7, characterized in that: The sulfur recovery device further comprises a second liquid inlet pipeline (32) and a second gas outlet pipeline (48); the second heat exchanger (23) has a second heat exchange chamber; one end of the second liquid inlet pipeline (32) is connected to the low-pressure boiler; the other end of the second liquid inlet pipeline (32) is connected to the second heat exchange chamber; one end of the second gas outlet pipeline (48) is connected to the second heat exchange chamber; the other end of the second gas outlet pipeline (48) is used to discharge steam.

9. The sulfur recovery device according to claim 7, characterized in that: The sulfur recovery unit also includes: a second reactor (30) having a third reaction chamber, a sixth inlet communicating with the third reaction chamber, and a third outlet, wherein the sixth inlet is communicated with the second branch pipe (27); a third delivery pipeline, comprising a second main pipe (49) and a third branch pipe (35) and a fourth branch pipe (43) both of which are in communication with the second main pipe (49), the second main pipe (49) being in communication with the third outlet, the third branch pipe (35) being in communication with the receiving structure (13), and the fourth branch pipe (43) being used for discharging gas; a third heat exchanger (25), the third heat exchanger (25) being located on the outer periphery of the second branch pipe (27), the third heat exchanger (25) being used to heat the gas in the second branch pipe (27); A fourth heat exchanger (24), the fourth heat exchanger (24) is located on the outer periphery of the second main pipe (49), and the fourth heat exchanger (24) is used to cool the mixed material.

10. The sulfur recovery device according to claim 9, characterized in that: The sulfur recovery device further comprises a third liquid inlet pipeline (37) and a third gas outlet pipeline (52); the fourth heat exchanger (24) has a third heat exchange chamber; one end of the third liquid inlet pipeline (37) is in communication with the low-pressure boiler; the other end of the third liquid inlet pipeline (37) is in communication with the third heat exchange chamber; one end of the third gas outlet pipeline (52) is in communication with the third heat exchange chamber; the other end of the third gas outlet pipeline (52) is used for discharging steam; or, The sulfur recovery device further comprises: an analysis unit (50) disposed on the fourth branch pipe (43), the analysis unit (50) being used to detect the content of the gas, and the controller being control-connected to the analysis unit (50); or, The sulfur recovery device further comprises: a sulfur separation unit (80) arranged on the fourth branch pipe (43), the sulfur separation unit (80) having a second liquid outlet; and a fourth collecting pipeline (26), one end of the fourth collecting pipeline (26) being connected to the receiving structure (13), and the other end of the fourth collecting pipeline (26) being connected to the second liquid outlet, the sulfur separation unit (80) being used to separate the liquid sulfur in the fourth branch pipe (43) from the fourth branch pipe (43) and to enter the receiving structure (13) through the fourth collecting pipeline (26).

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