Hydrogenation apparatus for hydrogen peroxide production

Abstract

The utility model discloses a kind of hydrogenation equipment of hydrogen peroxide production, comprising: working fluid filter assembly, working fluid heat exchanger, working fluid preheater, hydrogen filter, hydrogenation tower, hydrogenation vapor-liquid separator, hydrogenation liquid circulating pump group, hydrogenation liquid regeneration bed, hydrogenation liquid filter group, hydrogenation liquid storage tank, hydrogenation tail gas condenser and condensate measuring tank, the working fluid filter assembly is equipped with working fluid import and working fluid export, the working fluid import is suitable for passing into working fluid;The working fluid heat exchanger is equipped with working fluid side import, working fluid side export, hydrogenation liquid side import and hydrogenation liquid side export, the working fluid side import with the working fluid export of the working fluid filter assembly is communicated;The working fluid preheater is equipped with preheating import and preheating export, the preheating import with the working fluid side export of the working fluid heat exchanger is communicated.The utility model can increase heat energy utilization rate and improve tail gas recovery effect.

Description

Technical Field

[0001] This utility model relates to a hydrogen peroxide production hydrogenation equipment. Background Technology

[0002] Currently, the industrial production of hydrogen peroxide mainly employs the anthraquinone process, with the hydrogenation stage being the key step. Traditional hydrogenation production equipment typically consists of a hydrogenation tower, filtration unit, circulating pump, and separation equipment.

[0003] After searching the existing technology, it was found that Chinese Patent Publication No. CN215087209U discloses a palladium catalyst regeneration subsystem in a continuous production system of a hydrogenation tower. This patent achieves palladium catalyst regeneration through multi-stage hydrogenation towers and multi-channel valve switching, enabling continuous production. However, this device only uses a working fluid preheater for preheating, resulting in low thermal energy utilization. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a hydrogen peroxide production hydrogenation equipment that can increase the thermal energy utilization rate and improve the tail gas recovery effect.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a hydrogen peroxide production hydrogenation device, comprising:

[0006] A working fluid filtration assembly, wherein the working fluid filtration assembly is provided with a working fluid inlet and a working fluid outlet, and the working fluid inlet is adapted to allow working fluid to flow in;

[0007] A working fluid heat exchanger is provided with a working fluid side inlet, a working fluid side outlet, a hydrogenated liquid side inlet, and a hydrogenated liquid side outlet. The working fluid side inlet is connected to the working fluid outlet of the working fluid filtration assembly.

[0008] A working fluid preheater is provided with a preheating inlet and a preheating outlet, and the preheating inlet is connected to the working fluid side outlet of the working fluid heat exchanger.

[0009] A hydrogen filter, wherein the hydrogen filter is provided with a hydrogen inlet and a hydrogen outlet, and the hydrogen inlet is adapted to allow hydrogen to pass through;

[0010] A hydrogenation tower, wherein the hydrogenation tower is provided with a working liquid inlet, a hydrogen gas inlet and a hydrogenated liquid outlet;

[0011] A hydrogenation vapor-liquid separator is provided with a mixture inlet, a first hydrogenated liquid outlet, a second hydrogenated liquid outlet, and a hydrogenation tail gas outlet. The mixture inlet is connected to the hydrogenated liquid outlet of the hydrogenation tower.

[0012] A hydrogenated liquid circulation pump set, wherein the hydrogenated liquid circulation pump set is provided with a circulation inlet and a circulation outlet, and the circulation inlet is connected to the first hydrogenated liquid outlet of the hydrogenated vapor-liquid separator;

[0013] A hydrogenated liquid regeneration bed is provided with a regeneration bed inlet and a regeneration bed outlet, and the regeneration bed inlet is connected to the second hydrogenated liquid outlet of the hydrogenated vapor-liquid separator;

[0014] A hydrogenated liquid filter assembly is provided with a filter inlet and a filter outlet. The filter inlet is connected to the regeneration bed outlet of the hydrogenated liquid regeneration bed, and the filter outlet is connected to the hydrogenated liquid side inlet of the working fluid heat exchanger.

[0015] A hydrogenated liquid storage tank is provided with a storage tank inlet, which is connected to the hydrogenated liquid side outlet of the working fluid heat exchanger;

[0016] A hydrogenation tail gas condenser is provided with a tail gas inlet, a condensate outlet and a tail gas outlet, and the tail gas inlet is connected to the hydrogenation tail gas outlet of the hydrogenation vapor-liquid separator.

[0017] A condensate metering tank is provided with a metering tank inlet, which is connected to the condensate outlet of the hydrogenation tail gas condenser.

[0018] The circulation outlet of the hydrogenated liquid circulation pump group merges with the preheating outlet of the working liquid preheater and is connected to the working liquid inlet of the hydrogenation tower. The hydrogen outlet of the hydrogen filter is connected to the hydrogen inlet of the hydrogenation tower.

[0019] Furthermore, in order to adjust the exhaust gas venting volume according to the oxygen content, the hydrogen peroxide production hydrogenation equipment also includes a hydrogenation exhaust gas oxygen content analyzer, an exhaust gas flow regulating valve, and a controller.

[0020] The hydrogenation tail gas oxygen content analyzer is installed on the pipeline between the tail gas outlet of the hydrogenation tail gas condenser and the hydrogenation tail gas water seal flame arrester. The hydrogenation tail gas oxygen content analyzer is suitable for detecting the oxygen content in the hydrogenation tail gas and outputting an oxygen content signal.

[0021] The exhaust gas flow regulating valve is installed on the pipeline between the hydrogenation exhaust gas oxygen content analyzer and the hydrogenation exhaust gas water seal flame arrester. The controller is connected to both the hydrogenation exhaust gas oxygen content analyzer and the exhaust gas flow regulating valve. The controller is adapted to adjust the opening degree of the exhaust gas flow regulating valve according to the oxygen content signal from the hydrogenation exhaust gas oxygen content analyzer.

[0022] Furthermore, in order to control the liquid level in the hydrogenation vapor-liquid separator, the hydrogen peroxide production hydrogenation equipment also includes a liquid level detection component and a liquid level regulating valve;

[0023] The liquid level detection component is disposed on the hydrogenation vapor-liquid separator, and the liquid level detection component is adapted to detect the liquid level in the hydrogenation vapor-liquid separator and output a liquid level signal;

[0024] The liquid level regulating valve is installed on the pipeline between the hydrogenation vapor-liquid separator and the hydrogenation liquid regeneration bed. The controller is connected to the liquid level detection component and the liquid level regulating valve respectively. The controller is adapted to adjust the opening degree of the liquid level regulating valve according to the liquid level signal of the liquid level detection component.

[0025] Furthermore, in order to better remove impurities from the working fluid, the working fluid filtration assembly includes a primary working fluid filter and a secondary working fluid filter connected in sequence, with the outlet of the primary working fluid filter connected to the inlet of the secondary working fluid filter.

[0026] Furthermore, the hydrogenation tower comprises three hydrogenation tower units connected in series, and each hydrogenation tower unit is equipped with a palladium catalyst bed.

[0027] Furthermore, the hydrogen peroxide production hydrogenation equipment also includes a first connecting pipeline and a second connecting pipeline. After the second hydrogenated liquid outlet of the hydrogenation vapor-liquid separator is diverted, it is connected to the first connecting pipeline and the second connecting pipeline respectively. The first connecting pipeline is connected to the hydrogenated liquid regeneration bed, and the second connecting pipeline is connected to the hydrogenated liquid filter group.

[0028] Furthermore, in order to monitor the liquid level in the hydrogenated liquid storage tank, the hydrogenated liquid storage tank is equipped with a liquid level detection component, which is adapted to detect the liquid level in the hydrogenated liquid storage tank.

[0029] Furthermore, in order to prevent backfire of the exhaust gas and isolate the gas passage, the hydrogen peroxide production hydrogenation equipment also includes a hydrogenation exhaust gas water seal flame arrester, the inlet of which is connected to the exhaust gas outlet of the hydrogenation exhaust gas condenser.

[0030] Furthermore, after the temperature of the hydrogenated liquid is reduced, it is transported to the hydrogenated liquid storage tank. A hydrogenated liquid cooler is provided between the hydrogenated liquid side outlet of the working fluid heat exchanger and the storage tank inlet of the hydrogenated liquid storage tank. The hydrogenated liquid cooler has a cooling inlet and a cooling outlet. The cooling inlet is connected to the hydrogenated liquid side outlet of the working fluid heat exchanger, and the cooling outlet is connected to the storage tank inlet of the hydrogenated liquid storage tank.

[0031] Furthermore, the hydrogen peroxide production hydrogenation equipment also includes a hydrogenated liquid transfer pump set, which has a pump set inlet and a pump set outlet. The pump set inlet is connected to the second hydrogenated liquid outlet of the hydrogenated vapor-liquid separator, and the pump set outlet is connected to the regeneration bed inlet of the hydrogenated liquid regeneration bed.

[0032] By adopting the above technical solution, this utility model has the following beneficial effects:

[0033] In this invention, during operation, the working fluid is filtered by the working fluid filtration assembly and then enters the working fluid heat exchanger through the working fluid side inlet. There, it exchanges heat with the hydrogenated liquid from the hydrogenated liquid filter group, thereby increasing the temperature of the working fluid by absorbing the heat of reaction carried by the hydrogenated liquid. After being further heated by the working fluid preheater, it merges with the circulation outlet of the hydrogenated liquid circulation pump group and enters the working fluid inlet of the hydrogenation tower.

[0034] A hydrogen filter supplies filtered hydrogen to the hydrogen inlet of the hydrogenation tower, where it comes into contact with the working fluid to generate hydrogenated liquid. The hydrogenated liquid outlet of the hydrogenation tower is connected to the mixture inlet of the hydrogenation vapor-liquid separator. The hydrogenation vapor-liquid separator divides the mixture flow into a first hydrogenated liquid outlet, a second hydrogenated liquid outlet, and a hydrogenation tail gas outlet. The first hydrogenated liquid outlet is connected to a hydrogenated liquid circulation pump group to form a loop back to the hydrogenation tower. The second hydrogenated liquid outlet is connected to the hydrogenated liquid regeneration bed. The regeneration bed outlet of the hydrogenated liquid regeneration bed is connected to the filter inlet of the hydrogenated liquid filter group. The filter outlet of the hydrogenated liquid filter group is connected to the hydrogenated liquid side inlet of the working fluid heat exchanger and exchanges heat with the working fluid in the working fluid heat exchanger before flowing into the hydrogenated liquid storage tank through the hydrogenated liquid side outlet.

[0035] The hydrogenation tail gas outlet of the hydrogenation vapor-liquid separator is connected to the hydrogenation tail gas condenser, and the condensate metering tank is connected to the condensate outlet of the hydrogenation tail gas condenser to collect the condensate. The above structure allows the heat of reaction to be transferred to the working fluid path through the working fluid heat exchanger, reducing the additional heating load. At the same time, the recovery method formed by the hydrogenation tail gas condenser and the condensate metering tank reduces the amount of solvent carried out with the tail gas, thereby reducing energy loss and solvent loss.

[0036] After the hydrogenation tail gas water seal flame arrester is connected to the hydrogenation tail gas condenser, the tail gas discharge forms a water seal for isolation and flame arrest; the hydrogenation liquid cooler is installed between the working fluid heat exchanger and the hydrogenation liquid storage tank to reduce the temperature of the hydrogenation liquid entering the hydrogenation liquid storage tank.

[0037] In summary, this invention enables heat to be recovered in the working fluid path and solvent to be condensed and collected in the exhaust gas path during heat exchange, storage, exhaust gas condensation, and condensate collection, thereby reducing energy and material losses. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the hydrogen peroxide production hydrogenation equipment of this utility model. Figure 1 ;

[0039] Figure 2 This is a schematic diagram of the hydrogen peroxide production hydrogenation equipment of this utility model. Figure 2 . Detailed Implementation

[0040] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0041] Example 1: As Figure 1-2 As shown, a hydrogen peroxide production hydrogenation device includes:

[0042] A working fluid filtration assembly (not shown in the figure) is provided with a working fluid inlet and a working fluid outlet. The working fluid inlet is suitable for introducing working fluid.

[0043] The working fluid heat exchanger 2 is provided with a working fluid side inlet, a working fluid side outlet, a hydrogenated liquid side inlet, and a hydrogenated liquid side outlet. The working fluid side inlet is connected to the working fluid outlet of the working fluid filter assembly.

[0044] Working fluid preheater 3 is provided with a preheating inlet and a preheating outlet. The preheating inlet is connected to the working fluid side outlet of the working fluid heat exchanger 2.

[0045] Hydrogen filter 4 is provided with a hydrogen inlet and a hydrogen outlet. The hydrogen inlet is suitable for introducing hydrogen.

[0046] Hydrogenation tower 5 is equipped with a working liquid inlet, a hydrogen inlet, and a hydrogenated liquid outlet;

[0047] The hydrogenation vapor-liquid separator 6 is provided with a mixture inlet, a first hydrogenated liquid outlet, a second hydrogenated liquid outlet and a hydrogenation tail gas outlet. The mixture inlet is connected to the hydrogenated liquid outlet of the hydrogenation tower 5.

[0048] The hydrogenated liquid circulation pump group 7 is provided with a circulation inlet and a circulation outlet. The circulation inlet is connected to the first hydrogenated liquid outlet of the hydrogenated vapor-liquid separator 6.

[0049] The hydrogenated liquid regeneration bed 8 is provided with a regeneration bed inlet and a regeneration bed outlet. The regeneration bed inlet is connected to the second hydrogenated liquid outlet of the hydrogenated vapor-liquid separator 6.

[0050] The hydrogenated liquid filter group 9 is provided with a filter inlet and a filter outlet. The filter inlet is connected to the regeneration bed outlet of the hydrogenated liquid regeneration bed 8, and the filter outlet is connected to the hydrogenated liquid side inlet of the working fluid heat exchanger 2.

[0051] The hydrogenated liquid storage tank 10 is provided with a storage tank inlet, which is connected to the hydrogenated liquid side outlet of the working liquid heat exchanger 2.

[0052] The hydrogenation tail gas condenser 11 is provided with a tail gas inlet, a condensate outlet and a tail gas outlet. The tail gas inlet is connected to the hydrogenation tail gas outlet of the hydrogenation vapor-liquid separator 6.

[0053] The condensate metering tank 12 is provided with a metering tank inlet, which is connected to the condensate outlet of the hydrogenation tail gas condenser 11.

[0054] The circulation outlet of the hydrogenated liquid circulation pump group 7 merges with the preheating outlet of the working liquid preheater 3 and is connected to the working liquid inlet of the hydrogenation tower 5. The hydrogen outlet of the hydrogen filter 4 is connected to the hydrogen inlet of the hydrogenation tower 5.

[0055] In this embodiment, as Figure 1-2 As shown, after the working fluid is filtered by the working fluid filtration assembly, it enters the working fluid heat exchanger 2 through the working fluid side inlet and exchanges heat with the hydrogenated liquid from the hydrogenated liquid filter group 9. This causes the working fluid to absorb the heat of reaction carried by the hydrogenated liquid and its temperature to rise. After being further heated by the working fluid preheater 3, it merges with the circulation outlet of the hydrogenated liquid circulation pump group 7 and enters the working fluid inlet of the hydrogenation tower 5.

[0056] Hydrogen filter 4 supplies filtered hydrogen to the hydrogen inlet of hydrogenation tower 5, where it comes into contact with the working fluid to generate hydrogenated liquid. The hydrogenated liquid outlet of hydrogenation tower 5 is connected to the mixture inlet of hydrogenation vapor-liquid separator 6, which divides the mixture flow into a first hydrogenated liquid outlet, a second hydrogenated liquid outlet, and a hydrogenated tail gas outlet. The first hydrogenated liquid outlet is connected to hydrogenated liquid circulation pump set 7 to form a loop back to hydrogenation tower 5, and the second hydrogenated liquid outlet is connected to hydrogenated liquid regeneration bed 8. The outlet of the regeneration bed 8 is connected to the filter inlet of the hydrogenated liquid filter group 9. The filter outlet of the hydrogenated liquid filter group 9 is connected to the hydrogenated liquid side inlet of the working liquid heat exchanger 2 and exchanges heat with the working liquid in the working liquid heat exchanger 2 before flowing into the hydrogenated liquid storage tank 10 through the hydrogenated liquid side outlet. The outlet of the hydrogenated gas separator 6 is connected to the hydrogenated gas condenser 11. The condensate metering tank 12 is connected to the condensate outlet of the hydrogenated gas condenser 11 to collect the condensate.

[0057] In this embodiment, the hydrogenated liquid regeneration bed 8 is specifically a hydrogenated liquid bleaching bed that uses bleaching clay to adsorb the degradation products.

[0058] Specifically, such as Figure 1 As shown, the hydrogen peroxide production hydrogenation equipment also includes a hydrogenation tail gas oxygen content analyzer 15, a tail gas flow regulating valve, and a controller.

[0059] The hydrogenation tail gas oxygen content analyzer 15 is installed on the pipeline between the tail gas outlet of the hydrogenation tail gas condenser 11 and the hydrogenation tail gas water seal flame arrestor 13. The hydrogenation tail gas oxygen content analyzer is suitable for detecting the oxygen content in the hydrogenation tail gas and outputting the oxygen content signal.

[0060] The exhaust gas flow regulating valve is installed on the pipeline between the hydrogenation exhaust gas oxygen content analyzer 15 and the hydrogenation exhaust gas water seal flame arrester 13. The controller is connected to the hydrogenation exhaust gas oxygen content analyzer 15 and the exhaust gas flow regulating valve respectively. The controller is adapted to adjust the opening degree of the exhaust gas flow regulating valve according to the oxygen content signal of the hydrogenation exhaust gas oxygen content analyzer 15.

[0061] In this embodiment, as Figure 1 As shown, the hydrogenation tail gas oxygen content analyzer 15 is installed on the pipeline between the tail gas outlet of the hydrogenation tail gas condenser 11 and the hydrogenation tail gas water seal flame arrester 13. It detects the oxygen content in the flowing hydrogenation tail gas and outputs an oxygen content signal to the controller. The tail gas flow regulating valve is installed on the pipeline between the hydrogenation tail gas oxygen content analyzer 15 and the hydrogenation tail gas water seal flame arrester 13. The controller adjusts the opening of the tail gas flow regulating valve according to the oxygen content signal from the hydrogenation tail gas oxygen content analyzer 15 to control the oxygen content in the hydrogenation tail gas within a range not exceeding 2%. When the detected oxygen content value is lower than the set range, the controller reduces the opening of the tail gas flow regulating valve to reduce the tail gas emission and avoid excessive tail gas emission leading to increased hydrogen consumption. When the oxygen content is higher than the set range, the controller increases the opening of the tail gas flow regulating valve to increase the tail gas emission and avoid insufficient tail gas emission leading to an increase in the inert gas content in the hydrogenation tower 5.

[0062] In this embodiment, the controller is a DCS, and the exhaust gas flow regulating valve can be an electric regulating valve in this embodiment, but it can also be a pneumatic regulating valve in other embodiments.

[0063] Specifically, such as Figure 1 As shown, the hydrogen peroxide production hydrogenation equipment also includes a liquid level detection component 20 and a liquid level regulating valve 21;

[0064] The liquid level detection component 20 is installed on the hydrogenation vapor-liquid separator 6. The liquid level detection component 20 is adapted to detect the liquid level in the hydrogenation vapor-liquid separator 6 and output a liquid level signal.

[0065] The liquid level regulating valve 21 is installed on the pipeline between the hydrogenation vapor-liquid separator 6 and the hydrogenation liquid regeneration bed 8. The controller is connected to the liquid level detection component 20 and the liquid level regulating valve 21 respectively. The controller is adapted to adjust the opening degree of the liquid level regulating valve 21 according to the liquid level signal of the liquid level detection component 20.

[0066] In this embodiment, as Figure 1-2As shown, the liquid level detection component 20 is installed on the hydrogen vapor-liquid separator 6 to detect the liquid level height inside the hydrogen vapor-liquid separator 6 and output a liquid level signal to the controller. The liquid level regulating valve 21 is installed on the pipeline between the hydrogen vapor-liquid separator 6 and the hydrogen regeneration bed 8. The controller adjusts the opening of the liquid level regulating valve 21 according to the liquid level signal from the liquid level detection component 20 to control the liquid level inside the hydrogen vapor-liquid separator 6 within the range of 30% to 50%. When the detected liquid level is lower than the set range, the controller reduces the opening of the liquid level regulating valve 21 to reduce the outflow velocity of the hydrogenated liquid, causing the liquid level inside the hydrogen vapor-liquid separator 6 to rise again; when the liquid level is higher than the set range, the controller increases the opening of the liquid level regulating valve 21 to increase the outflow velocity of the hydrogenated liquid, causing the liquid level inside the hydrogen vapor-liquid separator 6 to drop.

[0067] In this embodiment, the level detection component 20 is a level transmitter, but in other embodiments it can also be a float level gauge or a radar level gauge. In this embodiment, the level regulating valve 21 is an electric regulating valve, but in other embodiments it can also be a pneumatic regulating valve.

[0068] Specifically, such as Figure 2 As shown, the working fluid filtration assembly includes a primary working fluid filter and a secondary working fluid filter connected in sequence, with the outlet of the primary working fluid filter connected to the inlet of the secondary working fluid filter.

[0069] Specifically, such as Figure 1 As shown, the hydrogenation tower 5 consists of three hydrogenation tower units connected in series, and each hydrogenation tower unit is equipped with a palladium catalyst bed.

[0070] Specifically, such as Figure 1-2 As shown, the hydrogen peroxide production hydrogenation equipment also includes a first connecting pipeline and a second connecting pipeline. After the second hydrogenated liquid outlet of the hydrogenation vapor-liquid separator 6 is diverted, it is connected to the first connecting pipeline and the second connecting pipeline respectively. The first connecting pipeline is connected to the hydrogenated liquid regeneration bed 8, and the second connecting pipeline is connected to the hydrogenated liquid filter group 9.

[0071] Specifically, such as Figure 2 As shown, the hydrogenated liquid storage tank 10 is equipped with a liquid level detection component, which is suitable for detecting the liquid level in the hydrogenated liquid storage tank 10.

[0072] Specifically, such as Figure 1 As shown, the hydrogen peroxide production hydrogenation equipment also includes a hydrogenation tail gas water seal flame arrester 13, the inlet of which is connected to the tail gas outlet of the hydrogenation tail gas condenser 11.

[0073] In this embodiment, as Figure 2As shown, the working fluid filtration assembly includes a primary working fluid filter and a secondary working fluid filter. The outlet of the primary working fluid filter is connected to the inlet of the secondary working fluid filter. The working fluid enters the working fluid heat exchanger 2 after passing through the primary working fluid filter and the secondary working fluid filter in sequence. The two-stage filters remove solid particles and impurities in the working fluid step by step.

[0074] After the second hydrogenated liquid outlet of the hydrogen vapor-liquid separator 6 is split, it is connected to the first connecting pipe and the second connecting pipe respectively. The first connecting pipe is connected to the regeneration bed inlet of the hydrogenated liquid regeneration bed 8, and the second connecting pipe is connected to the filter inlet of the hydrogenated liquid filter group 9. 10%-20% of the hydrogenated liquid flowing out of the hydrogen vapor-liquid separator 6 enters the hydrogenated liquid regeneration bed 8 for regeneration treatment through the first connecting pipe, and the remaining hydrogenated liquid directly enters the hydrogenated liquid filter group 9 through the second connecting pipe. The first connecting pipe and the second connecting pipe are respectively equipped with a first flow regulating valve and a second flow regulating valve. The proportional splitting of the hydrogenated liquid is achieved by adjusting the opening of the first flow regulating valve and the second flow regulating valve.

[0075] The hydrogenated liquid storage tank 10 is equipped with a liquid level detection component on its wall. The liquid level detection component detects the liquid level height in the hydrogenated liquid storage tank 10. The liquid level in the hydrogenated liquid storage tank 10 is controlled between 20% and 50%. The liquid level control of the hydrogenated liquid storage tank 10 is similar to that of the hydrogenated vapor-liquid separator 6. The hydrogenated liquid storage tank 10 is also equipped with a storage tank inlet and a control valve installed on the pipeline connected to the storage tank inlet. The controller adjusts the control valve according to the liquid level signal from the liquid level detection component to control the liquid level in the hydrogenated liquid storage tank 10 between 20% and 50%.

[0076] In this embodiment, the liquid level detection component is a liquid level transmitter; in other embodiments, it can also be a float level gauge or a radar level gauge.

[0077] The inlet of the hydrogenation tail gas water seal flame arrester 13 is connected to the tail gas outlet of the hydrogenation tail gas condenser 11. After being condensed by the hydrogenation tail gas condenser 11, the hydrogenation tail gas enters the hydrogenation tail gas water seal flame arrester 13. The water seal layer inside the hydrogenation tail gas water seal flame arrester 13 prevents the flame from propagating back to the hydrogenation system. The outlet of the hydrogenation tail gas water seal flame arrester 13 is connected to the outside for venting the tail gas.

[0078] Specifically, such as Figure 1-2 As shown, the hydrogen peroxide production hydrogenation equipment also includes a hydrogenated liquid transfer pump group 19. The hydrogenated liquid transfer pump group 19 is provided with a pump group inlet and a pump group outlet. The pump group inlet is connected to the second hydrogenated liquid outlet of the hydrogenated vapor-liquid separator 6, and the pump group outlet is connected to the regeneration bed inlet of the hydrogenated liquid regeneration bed 8.

[0079] In this embodiment, as Figure 1-2As shown, the pump inlet of the hydrogenated liquid transfer pump group 19 is connected to the second hydrogenated liquid outlet of the hydrogenated vapor-liquid separator 6, and the pump outlet is connected to the regeneration bed inlet of the hydrogenated liquid regeneration bed 8. The hydrogenated liquid transfer pump group 19 transports the hydrogenated liquid in the hydrogenated vapor-liquid separator 6 to the hydrogenated liquid regeneration bed 8, providing flow pressure for the hydrogenated liquid to pass through the hydrogenated liquid regeneration bed 8.

[0080] In this embodiment, as Figure 1-2 As shown, the working fluid enters the working fluid filtration assembly through the working fluid inlet 22. After being filtered by the primary and secondary working fluid filters, it enters the working fluid side inlet of the working fluid heat exchanger 2. In the working fluid heat exchanger 2, it exchanges heat with the hydrogenated liquid to raise its temperature. Then, it enters the working fluid preheater 3 for further heating to 40-70°C. After merging with the circulating hydrogenated liquid delivered by the hydrogenated liquid circulation pump group 7, it enters the working fluid inlet of the hydrogenation tower 5. Hydrogen gas enters the hydrogen filter 4 through the hydrogen inlet 23. After filtration, it enters the hydrogen inlet of the hydrogenation tower 5. Inside the hydrogenation tower 5, the working fluid sequentially passes through the palladium catalyst bed in the three sections of the hydrogenation tower unit, where it contacts the hydrogen gas and undergoes a hydrogenation reaction to generate hydrogenated liquid. The mixture of hydrogenated liquid and unreacted hydrogen gas is discharged from the hydrogenated liquid outlet of the hydrogenation tower 5 and enters the mixture inlet of the hydrogenation vapor-liquid separator 6.

[0081] The hydrogenation vapor-liquid separator 6 separates the mixture into hydrogenated liquid and hydrogenated tail gas. The hydrogenated tail gas exits from the hydrogenated tail gas outlet and enters the hydrogenated tail gas condenser 11. After condensation, the aromatic solvent in the tail gas enters the condensate metering tank 12. After the hydrogenated tail gas is detected by the hydrogenated tail gas oxygen content analyzer 15, the controller adjusts the opening of the tail gas flow regulating valve according to the oxygen content signal, controlling the hydrogenated tail gas to pass through the hydrogenated tail gas water seal flame arrester 13 before being discharged. The hydrogenated liquid discharged from the first hydrogenated liquid outlet of the hydrogenation vapor-liquid separator 6 is transported by the hydrogenated liquid circulation pump group 7 and merged with the working liquid heated by the working liquid preheater 3, returning to the hydrogenation tower 5. The controller adjusts the opening of the liquid level regulating valve 21 according to the liquid level signal output by the liquid level detection component 20, controlling the liquid level in the hydrogenation vapor-liquid separator 6 within the range of 30%-50%.

[0082] The hydrogenated liquid discharged from the second hydrogenated liquid outlet of the hydrogenation vapor-liquid separator 6 is split after passing through the liquid level regulating valve 21. 10%-20% of the hydrogenated liquid is transported to the hydrogenated liquid regeneration bed 8 by the hydrogenated liquid transfer pump group 19. In the hydrogenated liquid regeneration bed 8, the degradation products in the hydrogenated liquid are removed by the regenerating agent. The remaining 80%-90% of the hydrogenated liquid directly enters the hydrogenated liquid filter group 9. The first connecting pipeline and the second connecting pipeline are respectively equipped with flow regulating valves. The proportion of hydrogenated liquid is achieved by adjusting the opening of the two flow regulating valves. The hydrogenated liquid regenerated by the hydrogenated liquid regeneration bed 8 and the unregenerated hydrogenated liquid are combined before the filter inlet of the hydrogenated liquid filter group 9. After being filtered by the hydrogenated liquid filter group 9, it enters the hydrogenated liquid side inlet of the working liquid heat exchanger 2, exchanges heat with the working liquid, and is discharged from the hydrogenated liquid side outlet. After being cooled by the hydrogenated liquid cooler 14, it enters the hydrogenated liquid storage tank 10 for storage. The hydrogenated liquid storage tank 10 is equipped with a liquid level detection component on its wall. The liquid level detection component detects the liquid level in the hydrogenated liquid storage tank 10 and outputs a liquid level signal to the controller. The controller adjusts the inlet flow rate or outlet flow rate of the hydrogenated liquid storage tank 10 according to the liquid level signal to control the liquid level of the hydrogenated liquid storage tank 10 within the range of 20%-50%.

[0083] The hydrogenated liquid regeneration bed 8 is also equipped with a drain outlet, a discharge outlet, a nitrogen inlet, a steam inlet, a vent outlet, and a manhole. The regeneration bed inlet and outlet are equipped with inlet valves and outlet valves, respectively. The drain outlet is equipped with a drain valve, the discharge outlet with a discharge valve, the nitrogen inlet with a nitrogen valve, the steam inlet with a steam valve, and the vent outlet with a vent valve. When changing the regenerant in the hydrogenated liquid regeneration bed 8, the inlet and outlet valves are closed. After the hydrogenated liquid in the regeneration bed 8 has settled for 30 minutes, the drain valve is opened to discharge the degradation products and alkali solution. The discharge valve and nitrogen valve are opened, and nitrogen is introduced into the hydrogenated liquid regeneration bed 8 through the nitrogen inlet to control the pressure inside the hydrogenated liquid regeneration bed 8 to less than 0.1 MPa. The hydrogenated liquid in the hydrogenated liquid regeneration bed 8 is then discharged through the discharge outlet. After the material discharge is completed, close the nitrogen valve and install a blind flange at the nitrogen inlet to prevent nitrogen from entering and causing personnel suffocation. Open the steam valve and introduce steam into the hydrogenated liquid regeneration bed 8 through the steam inlet for regeneration treatment. After regeneration is completed, close the steam valve. After the hydrogenated liquid regeneration bed 8 has cooled for 4-5 hours, open the vent valve to release pressure, open the manhole to replace the alumina, close the manhole after replacement, install a blind flange at the steam inlet, remove the blind flange at the nitrogen inlet, and then open the nitrogen valve to perform a pressure test and leak test.

[0084] Example 2 is basically the same as Example 1, except that:

[0085] Specifically, a hydrogenated liquid cooler 14 is provided between the hydrogenated liquid side outlet of the working fluid heat exchanger 2 and the storage tank inlet of the hydrogenated liquid storage tank 10. The hydrogenated liquid cooler 14 is provided with a cooling inlet and a cooling outlet. The cooling inlet is connected to the hydrogenated liquid side outlet of the working fluid heat exchanger 2, and the cooling outlet is connected to the storage tank inlet of the hydrogenated liquid storage tank 10.

[0086] In this embodiment, the hydrogenated liquid cooler 14 is disposed between the hydrogenated liquid side outlet of the working fluid heat exchanger 2 and the storage tank inlet of the hydrogenated liquid storage tank 10. The cooling inlet of the hydrogenated liquid cooler 14 is connected to the hydrogenated liquid side outlet of the working fluid heat exchanger 2, and the cooling outlet is connected to the storage tank inlet of the hydrogenated liquid storage tank 10. After the hydrogenated liquid exchanges heat with the working fluid in the working fluid heat exchanger 2, it still maintains a relatively high temperature. After being further cooled by the hydrogenated liquid cooler 14, it enters the hydrogenated liquid storage tank 10.

[0087] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydrogen peroxide production hydrogenation device, characterized in that, include: A working fluid filtration assembly, wherein the working fluid filtration assembly is provided with a working fluid inlet and a working fluid outlet, and the working fluid inlet is adapted to allow working fluid to flow in; The working fluid heat exchanger (2) is provided with a working fluid side inlet, a working fluid side outlet, a hydrogenated liquid side inlet and a hydrogenated liquid side outlet, and the working fluid side inlet is connected to the working fluid outlet of the working fluid filter assembly; The working fluid preheater (3) is provided with a preheating inlet and a preheating outlet, and the preheating inlet is connected to the working fluid side outlet of the working fluid heat exchanger (2); Hydrogen filter (4), the hydrogen filter (4) is provided with a hydrogen inlet and a hydrogen outlet, the hydrogen inlet is suitable for introducing hydrogen; Hydrogenation tower (5), wherein the hydrogenation tower (5) is provided with a working liquid inlet, a hydrogen inlet and a hydrogenated liquid outlet; Hydrogenation vapor-liquid separator (6) is provided with a mixture inlet, a first hydrogenated liquid outlet, a second hydrogenated liquid outlet and a hydrogenation tail gas outlet, and the mixture inlet is connected to the hydrogenated liquid outlet of the hydrogenation tower (5); The hydrogenated liquid circulation pump group (7) is provided with a circulation inlet and a circulation outlet, and the circulation inlet is connected to the first hydrogenated liquid outlet of the hydrogenated vapor-liquid separator (6). Hydrogenated liquid regeneration bed (8) is provided with a regeneration bed inlet and a regeneration bed outlet. The regeneration bed inlet is connected to the second hydrogenated liquid outlet of the hydrogenated vapor-liquid separator (6). The hydrogenated liquid filter group (9) is provided with a filter inlet and a filter outlet. The filter inlet is connected to the regeneration bed outlet of the hydrogenated liquid regeneration bed (8), and the filter outlet is connected to the hydrogenated liquid side inlet of the working fluid heat exchanger (2). Hydrogenated liquid storage tank (10), the hydrogenated liquid storage tank (10) is provided with a storage tank inlet, the storage tank inlet is connected to the hydrogenated liquid side outlet of the working liquid heat exchanger (2); Hydrogenation tail gas condenser (11) is provided with a tail gas inlet, a condensate outlet and a tail gas outlet, and the tail gas inlet is connected to the hydrogenation tail gas outlet of the hydrogenation vapor-liquid separator (6). A condensate metering tank (12) is provided with a metering tank inlet, which is connected to the condensate outlet of the hydrogenation tail gas condenser (11). The circulation outlet of the hydrogenated liquid circulation pump group (7) merges with the preheating outlet of the working liquid preheater (3) and is connected to the working liquid inlet of the hydrogenation tower (5). The hydrogen outlet of the hydrogen filter (4) is connected to the hydrogen inlet of the hydrogenation tower (5).

2. The hydrogen peroxide production hydrogenation equipment according to claim 1, characterized in that, It also includes a hydrogenation tail gas water seal flame arrester (13), the inlet of which is connected to the tail gas outlet of the hydrogenation tail gas condenser (11).

3. The hydrogen peroxide production hydrogenation equipment according to claim 2, characterized in that, It also includes a hydrogenation tail gas oxygen content analyzer (15), a tail gas flow regulating valve and controller; The hydrogenation tail gas oxygen content analyzer (15) is installed on the pipeline between the tail gas outlet of the hydrogenation tail gas condenser (11) and the hydrogenation tail gas water seal flame arrester (13). The hydrogenation tail gas oxygen content analyzer is suitable for detecting the oxygen content in the hydrogenation tail gas and outputting an oxygen content signal. The tail gas flow regulating valve is located on the pipeline between the hydrogenation tail gas oxygen content analyzer (15) and the hydrogenation tail gas water seal flame arrester (13). The controller is connected to the hydrogenation tail gas oxygen content analyzer (15) and the tail gas flow regulating valve respectively. The controller is adapted to adjust the opening degree of the tail gas flow regulating valve according to the oxygen content signal of the hydrogenation tail gas oxygen content analyzer (15).

4. The hydrogen peroxide production hydrogenation equipment according to claim 3, characterized in that, It also includes a liquid level detection component (20) and a liquid level regulating valve (21). The liquid level detection component (20) is disposed on the hydrogenation vapor-liquid separator (6), and the liquid level detection component (20) is adapted to detect the liquid level in the hydrogenation vapor-liquid separator (6) and output a liquid level signal; The liquid level regulating valve (21) is installed on the pipeline between the hydrogenation vapor-liquid separator (6) and the hydrogenation liquid regeneration bed (8). The controller is connected to the liquid level detection component (20) and the liquid level regulating valve (21) respectively. The controller is adapted to adjust the opening degree of the liquid level regulating valve (21) according to the liquid level signal of the liquid level detection component (20).

5. The hydrogen peroxide production hydrogenation equipment according to claim 1, characterized in that, The working fluid filtration assembly includes a primary working fluid filter and a secondary working fluid filter connected in sequence, with the outlet of the primary working fluid filter connected to the inlet of the secondary working fluid filter.

6. The hydrogen peroxide production hydrogenation equipment according to claim 1, characterized in that, The hydrogenation tower (5) consists of three hydrogenation tower units connected in series, and each hydrogenation tower unit is equipped with a palladium catalyst bed.

7. The hydrogen peroxide production hydrogenation equipment according to claim 1, characterized in that, It also includes a first connecting pipe and a second connecting pipe. After the second hydrogenated liquid outlet of the hydrogenated vapor-liquid separator (6) is diverted, it is connected to the first connecting pipe and the second connecting pipe respectively. The first connecting pipe is connected to the hydrogenated liquid regeneration bed (8), and the second connecting pipe is connected to the hydrogenated liquid filter group (9).

8. The hydrogen peroxide production hydrogenation equipment according to claim 1, characterized in that, The hydrogenated liquid storage tank (10) is equipped with a liquid level detection component, which is adapted to detect the liquid level in the hydrogenated liquid storage tank (10).

9. The hydrogen peroxide production hydrogenation equipment according to claim 1, characterized in that, A hydrogenated liquid cooler (14) is provided between the hydrogenated liquid side outlet of the working fluid heat exchanger (2) and the storage tank inlet of the hydrogenated liquid storage tank (10). The hydrogenated liquid cooler (14) is provided with a cooling inlet and a cooling outlet. The cooling inlet is connected to the hydrogenated liquid side outlet of the working fluid heat exchanger (2), and the cooling outlet is connected to the storage tank inlet of the hydrogenated liquid storage tank (10).

10. The hydrogen peroxide production hydrogenation equipment according to claim 1, characterized in that, It also includes a hydrogenated liquid transfer pump set (19), which is provided with a pump set inlet and a pump set outlet. The pump set inlet is connected to the second hydrogenated liquid outlet of the hydrogenated vapor-liquid separator (6), and the pump set outlet is connected to the regeneration bed inlet of the hydrogenated liquid regeneration bed (8).

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