High-efficiency conversion device with effect of reducing discharge of condensed water and use method of high-efficiency conversion device

Abstract

The invention discloses an efficient conversion device with the effect of reducing condensate water discharge and a using method, and relates to the technical field of conversion devices.The device comprises a first water separator body, a raw gas pipeline, a conversion device inlet valve, a condensate water discharge pipeline, a second water separator body, a first condensate water discharge valve and a second condensate water discharge valve; a third condensate water discharging valve is mounted on the second conveying pipe, a humidifying mechanism used for humidifying and conversion reaction is arranged on the first water separator main body, and a heat exchange mechanism used for heat exchange is arranged on the second water separator main body. Through the humidifying mechanism, the shift gas can be humidified and cooled, and CO shift reaction and final CO shift reaction can be carried out at the same time, so that primary and secondary shift reaction can be carried out on the shift gas, 26.4 t / h of condensate water can be reduced to be sent to the gasification device main body to be used as raw gas washing water, and redundant condensate water can be recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of conversion devices, and in particular to a high-efficiency conversion device with the effect of reducing the external discharge of condensed water and a use method thereof. Background Art

[0002] The conversion device is a device specially used to convert carbon monoxide in synthesis gas into hydrogen and carbon dioxide, thereby optimizing the gas ratio to adapt to the subsequent process. The conversion device of the coal-to-synthetic ammonia project uses an isothermal conversion process: after the raw coal gas is heated up by the heat exchanger, it passes through the first and second isothermal conversion reactors in turn for CO conversion. The reaction gas is then cooled and separated from the gas by a multi-stage water cooler, and then enters the ammonia scrubbing tower for deammoniation, and is finally sent to the downstream device.

[0003] The process condensate recovered by the first water separator, the second water separator and the third water separator of the existing conversion device will be discharged into the process condensate buffer tank, pressurized by 5.2MPa by the condensate booster pump, and sent to the gasification washing tower for use as raw gas washing water. However, since 101t / h of condensate separated by gas and water in the conversion device is all sent to the gasification washing tower for use as raw gas washing water, there is excess ash water in the ash water system of the gasification device, and part of the ash water is forced to be sent to the sewage station. In order to achieve the purpose of recycling the excess condensate, based on this, a high-efficiency conversion device with the effect of reducing the discharge of condensate and a method of use are now provided, which can eliminate the disadvantages of the existing device. Summary of the invention

[0004] The object of the present invention is to provide a high-efficiency conversion device with the effect of reducing the discharge of condensed water and a method of use, so as to solve the problems in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A high-efficiency conversion device with condensate reduction and external discharge effect, comprising a first water separator body, a crude gas pipeline is installed on the input end of the first water separator body, a conversion device inlet valve is installed on the crude gas pipeline, a condensate external discharge pipeline is installed on one output end of the first water separator body, a second water separator body is arranged on one end of the condensate external discharge pipeline away from the first water separator body, the condensate external discharge pipeline is fixedly connected to an input end of the second water separator body, a first condensate external discharge valve and a second condensate external discharge valve are sequentially installed on the condensate external discharge pipeline, two first three-way pipe fittings are sequentially installed on the condensate external discharge pipeline between the first condensate external discharge valve and the second condensate external discharge valve, one of the first three-way pipe fittings is fixedly connected to the input end of the condensate buffer tank through a first delivery pipe, and the other first three-way pipe fitting is fixedly connected to an input end of the third water separator body through a second delivery pipe, a third condensate external discharge valve is installed on the second delivery pipe, and a humidification mechanism for humidification and conversion reaction is arranged on the first water separator body;

[0007] The second water separator body is provided with a heat exchange mechanism for heat exchange.

[0008] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0009] In an optional solution: the humidification mechanism includes:

[0010] a first conversion assembly disposed on the first water separator body;

[0011] The first transformation component comprises:

[0012] a third delivery pipe installed at the other output end of the first water separator body, the third delivery pipe being provided with a feed heat exchanger at one end away from the first water separator body, the third delivery pipe being fixedly connected to an input end of the feed heat exchanger, a fourth delivery pipe being installed at one output end of the feed heat exchanger, a first isothermal conversion furnace body being provided at one end of the fourth delivery pipe away from the feed heat exchanger, the fourth delivery pipe being fixedly connected to an input end of the first isothermal conversion furnace body, a first conversion furnace inlet valve being installed on the fourth delivery pipe, a fifth delivery pipe being installed at one output end of the first isothermal conversion furnace body, the fifth delivery pipe being fixedly connected to another input end of the first conversion furnace outlet valve at one end away from the first isothermal conversion furnace body, a first conversion furnace outlet valve being installed on the fifth delivery pipe, and a first isothermal conversion furnace medium-pressure drum being installed on the first isothermal conversion furnace body;

[0013] The feed heat exchanger is provided with a first humidifying component.

[0014] In an optional solution: the first humidification component includes:

[0015] A humidifier air inlet pipeline installed at the other output end of the feed heat exchanger, wherein a humidifier body is provided at one end of the humidifier air inlet pipeline away from the feed heat exchanger, and the humidifier air inlet pipeline is fixedly connected to an input end on the humidifier body;

[0016] The humidifier body is provided with a second conversion component.

[0017] In an optional solution: the second transformation component includes:

[0018] A sixth delivery pipe is installed at the output end of the humidifier body, a second isothermal conversion furnace is arranged at one end of the sixth delivery pipe away from the humidifier body, the sixth delivery pipe is fixedly connected to the input end of the second isothermal conversion furnace, a low-pressure steam drum is installed on the second isothermal conversion furnace, and the second conversion furnace inlet valve is installed on the sixth delivery pipe.

[0019] In an optional solution: the heat exchange mechanism includes:

[0020] A first heat exchange assembly disposed on the second water separator body;

[0021] The first heat exchange component comprises:

[0022] A thirteenth delivery pipe installed at the other output end of the second water separator body, the end of the thirteenth delivery pipe away from the second water separator body is provided with a high-pressure desalted water heat exchanger, the thirteenth delivery pipe is fixedly connected to the input end of the high-pressure desalted water heat exchanger, the output end of the high-pressure desalted water heat exchanger is provided with a fourteenth delivery pipe, the end of the fourteenth delivery pipe away from the high-pressure desalted water heat exchanger is provided with a low-pressure desalted water preheater, the fourteenth delivery pipe is fixedly connected to the output end of the low-pressure desalted water preheater, the input end of the low-pressure desalted water preheater is provided with a fifteenth delivery pipe, the end of the fifteenth delivery pipe away from the low-pressure desalted water preheater is fixedly connected to the thirteenth delivery pipe through a sixth three-way pipe fitting, the three water separator inlet valve II and the three water separator inlet valve I are sequentially installed on the fourteenth delivery pipe, the fourteenth delivery pipe is located between the three water separator inlet valve II and the three water separator inlet valve I and is provided with a seventh three-way pipe fitting, the seventh three-way pipe fitting is fixedly connected to the other input end of the third water separator body through a sixteenth delivery pipe;

[0023] The second water separator body is provided with a conveying assembly.

[0024] In an optional solution: the conveying component includes:

[0025] an eleventh delivery pipe installed at the other output end of the second water separator body, the end of the eleventh delivery pipe away from the second water separator body is fixedly connected to the tenth delivery pipe through a fourth three-way pipe fitting, the eleventh delivery pipe is sequentially installed with a recovery pump inlet valve, a condensate recovery pump, a recovery pump outlet valve, a condensate inlet humidifier valve and a humidifier boiler inlet valve, the eleventh delivery pipe is located between the humidifier boiler inlet valve and the condensate inlet humidifier valve and is installed with a fifth three-way pipe fitting, and the fifth three-way pipe fitting is fixedly connected to the other input end of the humidifier body through a twelve delivery pipe;

[0026] The second isothermal conversion furnace is provided with a second heat exchange component.

[0027] In an optional solution: the second heat exchange component includes:

[0028] A conversion gas inlet heat exchanger pipeline is installed at the output end of the second isothermal conversion furnace, a medium-pressure boiler feed water preheater is arranged at one end of the conversion gas inlet heat exchanger pipeline away from the second isothermal conversion furnace, the conversion gas inlet heat exchanger pipeline is fixedly connected to an input end of the medium-pressure boiler feed water preheater, a second conversion furnace outlet valve is installed on the conversion gas inlet heat exchanger pipeline, a second three-way pipe fitting is installed on the conversion gas inlet heat exchanger pipeline between the medium-pressure boiler feed water preheater and the second conversion furnace outlet valve, a low-pressure boiler feed water preheater is arranged at one end of the second three-way pipe fitting away from the conversion gas inlet heat exchanger pipeline, the second three-way pipe fitting is fixedly connected to the input end of the low-pressure boiler feed water preheater through a seventh delivery pipe, an eighth delivery pipe is installed at one output end of the medium-pressure boiler feed water preheater, and the eighth delivery pipe is connected to the low-pressure The output end on the boiler feed water preheater is fixedly connected, and the second water separator inlet valve I and the second water separator inlet valve II are installed on the eighth delivery pipe in sequence. The eighth delivery pipe is located between the second water separator inlet valve I and the second water separator inlet valve II and is installed with a third three-way pipe fitting. The end of the third three-way pipe fitting away from the eighth delivery pipe is fixedly connected to the input end of the second water separator body through a ninth delivery pipe. The other input end of the medium-pressure boiler feed water preheater is installed with a boiler water inlet pipeline, and a boiler water inlet valve is installed on the boiler water inlet pipeline. The other output end of the medium-pressure boiler feed water preheater is installed with a tenth delivery pipe, and the tenth delivery pipe is fixedly connected to the input end of the medium-pressure steam drum of the first isothermal conversion furnace, and the medium-pressure steam drum inlet valve is installed on the tenth delivery pipe.

[0029] In an optional scheme: a condensate delivery pipeline is installed at the output end of the condensate buffer tank, a gasification device body is arranged at one end of the condensate delivery pipeline away from the condensate buffer tank, the condensate delivery pipeline is fixedly connected to the input end of the gasification device body, and a booster pump inlet valve, a condensate booster pump, a booster pump outlet valve and a condensate inlet gasification device valve are sequentially installed on the condensate delivery pipeline.

[0030] In an optional scheme: the output end of the third water separator body is installed with a seventeenth delivery pipe, the end of the seventeenth delivery pipe away from the third water separator body is provided with a water cooler, the seventeenth delivery pipe is fixedly connected to the input end of the water cooler, the output end of the water cooler is installed with an eighteenth delivery pipe, the end of the eighteenth delivery pipe away from the water cooler is provided with an ammonia washing tower, the eighteenth delivery pipe is fixedly connected to the input end of the ammonia washing tower, the output end of the ammonia washing tower is installed with a conversion gas export pipeline, and a conversion gas export valve is installed on the conversion gas export pipeline.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention can humidify and cool the conversion gas through the humidification mechanism, and carry out CO conversion reaction and final CO conversion reaction at the same time, so as to carry out preliminary and secondary conversion reactions on the conversion gas, and reduce 26.4t / h of condensed water sent to the main body of the gasification device for use as raw coal gas washing water, so that the excess condensed water can be recycled.

[0033] 2. The present invention uses a heat exchange mechanism to enable the second water separator body and the third water separator body to perform a second gas-liquid separation and a third gas-liquid separation operation on the converted gas after the reaction, and perform secondary heat exchange and cooling operations on the converted gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the present invention.

[0035] Notes on the reference numerals: 1. crude gas pipeline; 2. conversion device inlet valve; 3. first water separator body; 4. first condensate discharge valve; 5. feed heat exchanger; 6. first conversion furnace outlet valve; 7. first isothermal conversion furnace body; 8. first isothermal conversion furnace medium-pressure drum; 9. medium-pressure drum water inlet valve; 10. humidifier boiler water inlet valve; 11. humidifier air inlet pipeline; 12. first conversion furnace inlet valve; 13. low-pressure drum; 14. second isothermal conversion furnace; 15. second conversion furnace outlet valve; 16. second conversion furnace inlet valve; 17. humidifier body; 18. condensate inlet humidifier valve; 19. conversion gas inlet heat exchanger pipeline; 20. condensate recovery pump; 21. recovery pump inlet valve; 22. recovery pump outlet valve; 23. low-pressure boiler feed water preheater; 24. second water separator inlet 1. Inlet valve Ⅰ; 25. Second water separator inlet valve Ⅱ; 26. Medium-pressure boiler feed water preheater; 27. Boiler water inlet valve; 28. Boiler water inlet pipeline; 29. ​​High-pressure desalted water heat exchanger; 30. Third water separator inlet valve Ⅱ; 31. Second water separator body; 32. Low-pressure desalted water preheater; 33. Third water separator inlet valve Ⅰ; 34. Second condensate discharge valve; 35. Condensate discharge pipeline; 36. Condensate buffer tank; 37. Booster pump inlet valve; 38. Condensate booster pump; 39. Booster pump outlet valve; 40. Condensate inlet valve of gasification device; 41. Gasification device body; 42. Condensate delivery pipeline; 43. Third condensate discharge valve; 44. Third water separator body; 45. Water cooler; 46. Ammonia washing tower; 47. Conversion gas delivery valve; 48. Conversion gas delivery pipeline. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0037] In one embodiment, Figure 1As shown, a high-efficiency conversion device with condensate reduction and external discharge effect comprises a first water separator body 3, a crude gas pipeline 1 is installed at the input end of the first water separator body 3, an inlet valve 2 of the conversion device is installed on the crude gas pipeline 1, a condensate external discharge pipeline 35 is installed at one output end of the first water separator body 3, a second water separator body 31 is arranged at one end of the condensate external discharge pipeline 35 away from the first water separator body 3, the condensate external discharge pipeline 35 is fixedly connected to one input end of the second water separator body 31, and the condensate is discharged from the second water separator body 31. The first condensate discharge valve 4 and the second condensate discharge valve 34 are sequentially installed on the condensate discharge pipeline 35. The condensate discharge pipeline 35 is located between the first condensate discharge valve 4 and the second condensate discharge valve 34 and is sequentially installed with two first three-way pipe fittings. One first three-way pipe fitting is fixedly connected to the input end of the condensate buffer tank 36 through the first delivery pipe, and the other first three-way pipe fitting is fixedly connected to an input end of the third water separator body 44 through the second delivery pipe. The third condensate discharge valve 43 is installed on the second delivery pipe. The condensate buffer tank 36 is fixedly connected to the input end of the third water separator body 44 through the second delivery pipe. The output end of the flushing tank 36 is equipped with a condensate delivery pipeline 42, and the end of the condensate delivery pipeline 42 away from the condensate buffer tank 36 is provided with a gasification device body 41, and the condensate delivery pipeline 42 is fixedly connected to the input end of the gasification device body 41. The booster pump inlet valve 37, the condensate booster pump 38, the booster pump outlet valve 39 and the condensate inlet gasification device valve 40 are installed on the condensate delivery pipeline 42 in sequence, and the output end of the third water separator body 44 is equipped with a seventeenth delivery pipe, and the seventeenth delivery pipe is away from the third water separator body. A water cooler 45 is provided at one end of 44, a seventeenth delivery pipe is fixedly connected to the input end of the water cooler 45, an eighteenth delivery pipe is installed at the output end of the water cooler 45, an ammonia washing tower 46 is provided at one end of the eighteenth delivery pipe away from the water cooler 45, the eighteenth delivery pipe is fixedly connected to the input end of the ammonia washing tower 46, a conversion gas delivery pipeline 48 is installed at the output end of the ammonia washing tower 46, a conversion gas delivery valve 47 is installed on the conversion gas delivery pipeline 48, and a humidification mechanism for humidification and conversion reaction is provided on the first water separator body 3;

[0038] The second water separator body 31 is provided with a heat exchange mechanism for heat exchange;

[0039] In this embodiment, when in use, by opening the inlet valve 2 of the conversion device, the raw coal gas can be transported to the inner cavity of the first water separator body 3 through the raw coal gas pipeline 1 to perform the first gas-liquid separation operation, and then the converted gas is humidified and cooled by the humidification mechanism, and the CO conversion reaction and the final CO conversion reaction are performed at the same time, so that the converted gas can be subjected to the preliminary and secondary conversion reactions;

[0040] Afterwards, the heat exchange mechanism can be used to make the second water separator body 31 and the third water separator body 44 perform the second gas-liquid separation and the third gas-liquid separation operation on the converted gas after the reaction, and perform heat exchange and temperature reduction operations on the converted gas again;

[0041] Then, the third water separator body 44 can deliver the conversion gas generated after gas-liquid separation in the inner cavity to the inner cavity of the water cooler 45 through the seventeenth delivery pipe for final heat exchange and cooling. Then, the water cooler 45 delivers the conversion gas to the inner cavity of the ammonia scrubbing tower 46 through the eighteenth delivery pipe for conversion gas deammoniation treatment. After that, the conversion gas delivery valve 47 is opened. At this time, the water cooler 45 can deliver the deammonified conversion gas to the downstream device for use through the conversion gas delivery pipeline 48.

[0042] The first condensate discharge valve 4 and the third condensate discharge valve 43 are opened at the same time. At this time, the condensate generated by gas-liquid separation in the inner cavity of the first water separator body 3 and the third water separator body 44 can be transported to the inner cavity of the condensate buffer tank 36 through the condensate discharge pipeline 35, the second delivery pipe and the two first three-way pipe fittings;

[0043] When the liquid level of condensate in the inner cavity of the condensate buffer tank 36 is greater than 65%, the booster pump inlet valve 37, the booster pump outlet valve 39 and the condensate inlet gasification device valve 40 are opened, and the condensate booster pump 38 is started to increase the pressure to 5.2MPa. The condensate in the inner cavity of the condensate buffer tank 36 can be transported to the inner cavity of the gasification device body 41 through the condensate delivery pipeline 42 for use by the gasification device body 41. After that, the converted gas in the inner cavity of the second water separator body 31 can be humidified and cooled through the heat exchange mechanism.

[0044] In one embodiment, Figure 1 As shown, the humidification mechanism includes:

[0045] A first conversion assembly disposed on the first water separator body 3;

[0046] The first transformation component includes:

[0047] a third delivery pipe installed at the other output end of the first water separator body 3, a feed heat exchanger 5 is arranged at one end of the third delivery pipe away from the first water separator body 3, the third delivery pipe is fixedly connected to one input end of the feed heat exchanger 5, a fourth delivery pipe is installed at one output end of the feed heat exchanger 5, a first isothermal conversion furnace body 7 is arranged at one end of the fourth delivery pipe away from the feed heat exchanger 5, the fourth delivery pipe is fixedly connected to one input end of the first isothermal conversion furnace body 7, a first conversion furnace inlet valve 12 is installed on the fourth delivery pipe, a fifth delivery pipe is installed at one output end of the first isothermal conversion furnace body 7, an end of the fifth delivery pipe away from the first isothermal conversion furnace body 7 is fixedly connected to the other input end of the first conversion furnace outlet valve 6, the first conversion furnace outlet valve 6 is installed on the fifth delivery pipe, and a first isothermal conversion furnace medium-pressure drum 8 is installed on the first isothermal conversion furnace body 7;

[0048] The feed heat exchanger 5 is provided with a first humidifying component;

[0049] The first humidification component includes:

[0050] A humidifier air inlet pipeline 11 is installed at the other output end of the feed heat exchanger 5, and a humidifier body 17 is provided at one end of the humidifier air inlet pipeline 11 away from the feed heat exchanger 5, and the humidifier air inlet pipeline 11 is fixedly connected to an input end of the humidifier body 17;

[0051] A second conversion component is provided on the humidifier body 17;

[0052] The second transformation component includes:

[0053] A sixth delivery pipe is installed at the output end of the humidifier body 17. A second isothermal shift furnace 14 is arranged at one end of the sixth delivery pipe away from the humidifier body 17. The sixth delivery pipe is fixedly connected to the input end of the second isothermal shift furnace 14. A low-pressure drum 13 is installed on the second isothermal shift furnace 14. A second shift furnace inlet valve 16 is installed on the sixth delivery pipe. When the CO shift reaction and the final CO shift reaction are performed on the shift gas, the shift gas is delivered to the inner cavity of the humidifier body 17 or the first isothermal shift furnace body 7 for humidification and cooling operations.

[0054] In one embodiment, Figure 1 As shown, the heat exchange mechanism includes:

[0055] A first heat exchange component disposed on the second water separator body 31;

[0056] The first heat exchange component includes:

[0057] A thirteenth delivery pipe is installed at the other output end of the second water separator body 31, a high-pressure desalted water heat exchanger 29 is arranged at one end of the thirteenth delivery pipe away from the second water separator body 31, the thirteenth delivery pipe is fixedly connected to the input end of the high-pressure desalted water heat exchanger 29, a fourteenth delivery pipe is installed at the output end of the high-pressure desalted water heat exchanger 29, a low-pressure desalted water preheater 32 is arranged at one end of the fourteenth delivery pipe away from the high-pressure desalted water heat exchanger 29, the fourteenth delivery pipe is fixedly connected to the input end of the low-pressure desalted water preheater 32, and the low-pressure desalted water preheater The input end of the low-pressure desalted water preheater 32 is provided with a fifteenth delivery pipe, one end of the fifteenth delivery pipe away from the low-pressure desalted water preheater 32 is fixedly connected to the thirteenth delivery pipe through a sixth three-way pipe fitting, the third water separator inlet valve II30 and the third water separator inlet valve I33 are sequentially installed on the fourteenth delivery pipe, the seven three-way pipe fitting is installed between the third water separator inlet valve II30 and the third water separator inlet valve I33, and the seven three-way pipe fitting is fixedly connected to the other input end of the third water separator body 44 through a sixteenth delivery pipe;

[0058] A conveying assembly is provided on the second water separator body 31;

[0059] The conveying components include:

[0060] an eleventh delivery pipe installed at the other output end of the second water separator body 31, an end of the eleventh delivery pipe away from the second water separator body 31 is fixedly connected to the tenth delivery pipe through a fourth three-way pipe fitting, a recovery pump inlet valve 21, a condensate recovery pump 20, a recovery pump outlet valve 22, a condensate inlet humidifier valve 18 and a humidifier boiler inlet valve 10 are sequentially installed on the eleventh delivery pipe, a fifth three-way pipe fitting is installed between the humidifier boiler inlet valve 10 and the condensate inlet humidifier valve 18, and the fifth three-way pipe fitting is fixedly connected to the other input end of the humidifier body 17 through a twelve delivery pipe;

[0061] The second isothermal conversion furnace 14 is provided with a second heat exchange component;

[0062] The second heat exchange component includes:

[0063] The conversion gas inlet heat exchanger pipeline 19 is installed at the output end of the second isothermal conversion furnace 14. The end of the conversion gas inlet heat exchanger pipeline 19 away from the second isothermal conversion furnace 14 is provided with a medium-pressure boiler feed water preheater 26. The conversion gas inlet heat exchanger pipeline 19 is fixedly connected to an input end of the medium-pressure boiler feed water preheater 26. The second conversion furnace outlet valve 15 is installed on the conversion gas inlet heat exchanger pipeline 19. The conversion gas inlet heat exchanger pipeline 19 is located between the medium-pressure boiler feed water preheater 26 and the second conversion furnace outlet valve 15. A second three-way pipe fitting is installed, and a low-pressure boiler feed water preheater 23 is arranged at one end of the second three-way pipe fitting away from the conversion gas inlet heat exchanger pipeline 19. The second three-way pipe fitting is fixedly connected to the input end of the low-pressure boiler feed water preheater 23 through the seventh delivery pipe. An eighth delivery pipe is installed at one output end of the medium-pressure boiler feed water preheater 26, and the eighth delivery pipe is fixedly connected to the output end on the low-pressure boiler feed water preheater 23. The second water separator inlet valve I 24 and the second water separator inlet valve II are installed in sequence on the eighth delivery pipe. 25, the eighth delivery pipe is located between the second water separator inlet valve I 24 and the second water separator inlet valve II 25 and is installed with a third three-way pipe fitting, one end of the third three-way pipe fitting away from the eighth delivery pipe is fixedly connected to the input end of the second water separator body 31 through the ninth delivery pipe, the other input end of the medium-pressure boiler feed water preheater 26 is installed with a boiler water inlet pipeline 28, the boiler water inlet pipeline 28 is installed with a boiler water inlet valve 27, and the other output end of the medium-pressure boiler feed water preheater 26 is installed with a tenth The delivery pipe, the tenth delivery pipe is fixedly connected to the input end of the medium-pressure drum 8 of the first isothermal conversion furnace, and a medium-pressure drum water inlet valve 9 is installed on the tenth delivery pipe. The conversion gas can be heat exchanged and cooled by the low-pressure boiler feed water preheater 23 and the medium-pressure boiler feed water preheater 26, and the conversion gas can be heat exchanged and cooled again by the high-pressure desalted water heat exchanger 29 and the low-pressure desalted water preheater 32. The final heat exchange and cooling are carried out in the inner cavity of the water cooler 45, so that the conversion gas can be heat exchanged and cooled three times.

[0064] The above embodiment discloses a high-efficiency conversion device with the effect of reducing the discharge of condensed water. When in use, by opening the inlet valve 2 of the conversion device, the raw gas can be transported to the inner cavity of the first water separator body 3 through the raw gas pipeline 1 for the first gas-liquid separation operation. Then, the conversion gas generated by the gas-liquid separation in the inner cavity of the first water separator body 3 is transported to the inner cavity of the feed heat exchanger 5 through the third delivery pipe. At the same time, the inlet valve 12 of the first conversion furnace is opened. At this time, the conversion gas in the inner cavity of the feed heat exchanger 5 can be transported to the inner cavity of the first isothermal conversion furnace body 7 through the fourth delivery pipe for CO conversion reaction, so that the conversion gas can be subjected to a preliminary conversion reaction.

[0065] Then, the first conversion furnace outlet valve 6 is opened, and the conversion gas generated after the reaction in the inner cavity of the first isothermal conversion furnace body 7 is transported to the inner cavity of the feed heat exchanger 5 through the fifth delivery pipe. At the same time, the conversion gas in the inner cavity of the feed heat exchanger 5 is transported to the inner cavity of the humidifier body 17 through the humidifier inlet pipeline 11 for humidification and cooling operations. Then, the second conversion furnace inlet valve 16 is opened, and the conversion gas in the inner cavity of the humidifier body 17 is transported to the inner cavity of the second isothermal conversion furnace 14 through the sixth delivery pipe for the final CO conversion reaction, so as to facilitate the secondary conversion reaction of the conversion gas;

[0066] Then, the second conversion furnace outlet valve 15 is opened. At this time, the conversion gas generated after the reaction in the inner cavity of the second isothermal conversion furnace 14 is transported to the inner cavities of the low-pressure boiler feed water preheater 23 and the medium-pressure boiler feed water preheater 26 through the conversion gas inlet heat exchanger pipeline 19, the second three-way pipe fitting, and the seventh delivery pipe. At the same time, the conversion gas can be heat exchanged and cooled by the low-pressure boiler feed water preheater 23 and the medium-pressure boiler feed water preheater 26. At the same time, the second water separator inlet valve I24 and the second water separator inlet valve II25 are opened, and the conversion gas in the inner cavities of the low-pressure boiler feed water preheater 23 and the medium-pressure boiler feed water preheater 26 can be transported to the inner cavity of the second water separator body 31 through the eighth delivery pipe, the third three-way pipe fitting and the ninth delivery pipe for a second gas-liquid separation operation;

[0067] Then, the second water separator body 31 can transport the converted gas after gas-liquid separation to the inner cavity of the high-pressure desalted water heat exchanger 29 and the low-pressure desalted water preheater 32 respectively through the thirteenth delivery pipe, the sixth three-way pipe fitting and the fifteenth delivery pipe, and at the same time, the converted gas can be subjected to heat exchange and temperature reduction operations again through the high-pressure desalted water heat exchanger 29 and the low-pressure desalted water preheater 32. After that, the third water separator inlet valve II30 and the third water separator inlet valve I33 are opened, and the converted gas in the inner cavity of the high-pressure desalted water heat exchanger 29 and the low-pressure desalted water preheater 32 can be transported to the inner cavity of the third water separator body 44 through the fourteenth delivery pipe, the seventh three-way pipe fitting and the sixteenth delivery pipe for the third gas-liquid separation operation;

[0068] Afterwards, the third water separator body 44 can deliver the conversion gas generated after gas-liquid separation in the inner cavity to the inner cavity of the water cooler 45 through the seventeenth delivery pipe for final heat exchange and cooling. Then, the water cooler 45 delivers the conversion gas to the inner cavity of the ammonia scrubbing tower 46 through the eighteenth delivery pipe for conversion gas deammoniation treatment. Then, the conversion gas delivery valve 47 is opened. At this time, the water cooler 45 can deliver the deammonified conversion gas to the downstream device for use through the conversion gas delivery pipeline 48.

[0069] The first condensate discharge valve 4 and the third condensate discharge valve 43 are opened at the same time. At this time, the condensate generated by gas-liquid separation in the inner cavity of the first water separator body 3 and the third water separator body 44 can be transported to the inner cavity of the condensate buffer tank 36 through the condensate discharge pipeline 35, the second delivery pipe and the two first three-way pipe fittings;

[0070] When the liquid level of condensate in the inner cavity of the condensate buffer tank 36 is greater than 65%, the booster pump inlet valve 37, the booster pump outlet valve 39 and the condensate inlet valve 40 of the gasification device are opened, and the condensate booster pump 38 is started to increase the pressure to 5.2MPa. The condensate in the inner cavity of the condensate buffer tank 36 can be transported to the inner cavity of the gasification device body 41 through the condensate delivery pipeline 42 for use by the gasification device body 41;

[0071] After that, the recovery pump inlet valve 21, the recovery pump outlet valve 22 and the condensate inlet humidifier valve 18 are opened, and the condensate recovery pump 20 is started to increase the pressure to 5.2 MPa. The condensate generated by gas-liquid separation in the inner cavity of the second water separator body 31 can be transported to the inner cavity of the humidifier body 17 through the eleventh delivery pipe to supply the first isothermal shift furnace body 7 to perform shift gas humidification and cooling operations;

[0072] In this process, when the liquid level of condensed water in the inner cavity of the second water separator body 31 is higher than 95%, the second condensed water discharge valve 34 is opened, and the condensed water in the inner cavity of the second water separator body 31 can be transported to the inner cavity of the condensed water buffer tank 36 through the condensed water discharge pipeline 35, a first three-way pipe fitting and a first delivery pipe. When the liquid level of condensed water in the inner cavity of the second water separator body 31 is lower than 60%, the second condensed water discharge valve 34 is closed, so that the excess condensed water can be recycled.

[0073] During the use of the conversion device, due to the unstable operating conditions, in order to avoid the condensed water in the inner cavity of the second water separator body 31 being insufficient for the humidifier body 17 to humidify and cool the conversion gas, the humidifier boiler water inlet valve 10 can be opened to provide the humidifier body 17 with humidification and cooling of the conversion gas;

[0074] When the liquid level of condensed water in the inner cavity of the second water separator body 31 is higher than 60%, the humidifier boiler water inlet valve 10 is closed and the second water separator body 31 is used instead to supply the humidifier body 17 with the conversion gas humidification and cooling. Therefore, it has the advantages of good treatment effect, safety and reliability, simple process and low operating cost.

[0075] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A high-efficiency conversion device with a condensate reduction and external discharge effect, comprising a first water separator body (3), a crude gas pipeline (1) is installed at the input end of the first water separator body (3), a conversion device inlet valve (2) is installed on the crude gas pipeline (1), a condensate external discharge pipeline (35) is installed at one output end of the first water separator body (3), a second water separator body (31) is arranged at one end of the condensate external discharge pipeline (35) away from the first water separator body (3), and the condensate external discharge pipeline (35) is fixedly connected to one input end of the second water separator body (31), The condensate discharge pipeline (35) is sequentially installed with a first condensate discharge valve (4) and a second condensate discharge valve (34). The condensate discharge pipeline (35) is located between the first condensate discharge valve (4) and the second condensate discharge valve (34) and is sequentially installed with two first three-way pipe fittings, one of the first three-way pipe fittings is fixedly connected to the input end of the condensate buffer tank (36) through a first delivery pipe, and the other first three-way pipe fitting is fixedly connected to an input end of a third water separator body (44) through a second delivery pipe. The second delivery pipe is installed with a third condensate discharge valve (43), characterized in that: The first water separator body (3) is provided with a humidification mechanism for humidification and conversion reaction; The second water separator body (31) is provided with a heat exchange mechanism for heat exchange.

2. A high-efficiency conversion device with condensate reduction and discharge effect according to claim 1, characterized in that: The humidification mechanism comprises: a first conversion component arranged on the first water separator body (3); The first conversion assembly comprises: a third delivery pipe installed at the other output end of the first water separator body (3); a feed heat exchanger (5) is arranged at one end of the third delivery pipe away from the first water separator body (3); the third delivery pipe is fixedly connected to one input end of the feed heat exchanger (5); a fourth delivery pipe is installed at one output end of the feed heat exchanger (5); a first isothermal conversion furnace body (7) is arranged at one end of the fourth delivery pipe away from the feed heat exchanger (5); the fourth delivery pipe is fixedly connected to one input end of the first isothermal conversion furnace body (7); a first conversion furnace inlet valve (12) is installed on the fourth delivery pipe; a fifth delivery pipe is installed at one output end of the first isothermal conversion furnace body (7); an end of the fifth delivery pipe away from the first isothermal conversion furnace body (7) is fixedly connected to the other input end of the first conversion furnace outlet valve (6); the first conversion furnace outlet valve (6) is installed on the fifth delivery pipe; and a first isothermal conversion furnace medium-pressure drum (8) is installed on the first isothermal conversion furnace body (7); The feed heat exchanger (5) is provided with a first humidifying component.

3. A high-efficiency conversion device with condensate reduction and discharge effect according to claim 2, characterized in that: The first humidifying assembly comprises: a humidifier air inlet pipeline (11) installed at the other output end of the feed heat exchanger (5); a humidifier body (17) is provided at one end of the humidifier air inlet pipeline (11) away from the feed heat exchanger (5); and the humidifier air inlet pipeline (11) is fixedly connected to an input end of the humidifier body (17); A second conversion component is arranged on the humidifier body (17).

4. A high-efficiency conversion device with condensate reduction and discharge effect according to claim 3, characterized in that: The second conversion assembly comprises: a sixth delivery pipe installed at the output end of the humidifier body (17); a second isothermal conversion furnace (14) is provided at one end of the sixth delivery pipe away from the humidifier body (17); the sixth delivery pipe is fixedly connected to the input end of the second isothermal conversion furnace (14); a low-pressure drum (13) is installed on the second isothermal conversion furnace (14); and a second conversion furnace inlet valve (16) is installed on the sixth delivery pipe.

5. A high-efficiency conversion device with condensate reduction and discharge effect according to claim 4, characterized in that: The heat exchange mechanism comprises: a first heat exchange component arranged on the second water separator body (31); The first heat exchange component comprises: a thirteenth delivery pipe installed at the other output end of the second water separator body (31); a high-pressure desalted water heat exchanger (29) is provided at one end of the thirteenth delivery pipe away from the second water separator body (31); the thirteenth delivery pipe is fixedly connected to the input end of the high-pressure desalted water heat exchanger (29); a fourteenth delivery pipe is installed at the output end of the high-pressure desalted water heat exchanger (29); a low-pressure desalted water preheater (32) is provided at one end of the fourteenth delivery pipe away from the high-pressure desalted water heat exchanger (29); the fourteenth delivery pipe is fixedly connected to the output end of the low-pressure desalted water preheater (32); A fifteenth delivery pipe is installed at the input end of the low-pressure desalted water preheater (32), and one end of the fifteenth delivery pipe away from the low-pressure desalted water preheater (32) is fixedly connected to the thirteenth delivery pipe through a sixth three-way pipe fitting, and a third water separator inlet valve II (30) and a third water separator inlet valve I (33) are installed on the fourteenth delivery pipe in sequence, and a seventh three-way pipe fitting is installed between the third water separator inlet valve II (30) and the third water separator inlet valve I (33) on the fourteenth delivery pipe, and the seventh three-way pipe fitting is fixedly connected to the other input end of the third water separator body (44) through a sixteenth delivery pipe; The second water separator body (31) is provided with a conveying assembly.

6. A high-efficiency conversion device with condensate reduction and discharge effect according to claim 5, characterized in that: The delivery assembly comprises: an eleventh delivery pipe installed at the other output end of the second water separator body (31); the end of the eleventh delivery pipe away from the second water separator body (31) is fixedly connected to the tenth delivery pipe via a fourth three-way pipe fitting; the eleventh delivery pipe is sequentially installed with a recovery pump inlet valve (21), a condensate recovery pump (20), a recovery pump outlet valve (22), a condensate inlet humidifier valve (18) and a humidifier boiler inlet valve (10); the eleventh delivery pipe is located between the humidifier boiler inlet valve (10) and the condensate inlet humidifier valve (18) and is fixedly connected to the other input end of the humidifier body (17) via a twelve delivery pipe; The second isothermal conversion furnace (14) is provided with a second heat exchange component.

7. A high-efficiency conversion device with condensate reduction and discharge effect according to claim 6, characterized in that: The second heat exchange assembly comprises: a conversion gas inlet heat exchanger pipeline (19) installed at the output end of the second isothermal conversion furnace (14); a medium-pressure boiler feed water preheater (26) is provided at one end of the conversion gas inlet heat exchanger pipeline (19) away from the second isothermal conversion furnace (14); the conversion gas inlet heat exchanger pipeline (19) is fixedly connected to an input end of the medium-pressure boiler feed water preheater (26); and a second conversion furnace outlet valve (15) is installed on the conversion gas inlet heat exchanger pipeline (19). The shift gas inlet heat exchanger pipeline (19) is provided with a second three-way pipe fitting between the medium-pressure boiler feed water preheater (26) and the second shift furnace outlet valve (15); a low-pressure boiler feed water preheater (23) is provided at one end of the second three-way pipe fitting away from the shift gas inlet heat exchanger pipeline (19); the second three-way pipe fitting is fixedly connected to the input end of the low-pressure boiler feed water preheater (23) through a seventh delivery pipe; an output end of the medium-pressure boiler feed water preheater (26) is provided with an eighth delivery pipe. The eighth delivery pipe is fixedly connected to the output end of the low-pressure boiler feed water preheater (23); the eighth delivery pipe is sequentially installed with a second water separator inlet valve I (24) and a second water separator inlet valve II (25); the eighth delivery pipe is installed with a third three-way pipe fitting between the second water separator inlet valve I (24) and the second water separator inlet valve II (25); the third three-way pipe fitting is fixedly connected to the input end of the second water separator body (31) via a ninth delivery pipe at one end away from the eighth delivery pipe; the other input end of the medium-pressure boiler feed water preheater (26) is installed with a boiler water inlet pipeline (28); the boiler water inlet pipeline (28) is installed with a boiler water inlet valve (27); the other output end of the medium-pressure boiler feed water preheater (26) is installed with a tenth delivery pipe; the tenth delivery pipe is fixedly connected to the input end of the medium-pressure drum (8) of the first isothermal conversion furnace; the tenth delivery pipe is installed with a medium-pressure drum inlet valve (9).

8. The high-efficiency conversion device with condensate reduction and discharge effect according to claim 1 is characterized in that: A condensate delivery pipeline (42) is installed at the output end of the condensate buffer tank (36); a gasification device body (41) is provided at one end of the condensate delivery pipeline (42) away from the condensate buffer tank (36); the condensate delivery pipeline (42) is fixedly connected to the input end of the gasification device body (41); a booster pump inlet valve (37), a condensate booster pump (38), a booster pump outlet valve (39) and a condensate gasification device inlet valve (40) are installed in sequence on the condensate delivery pipeline (42).

9. A high-efficiency conversion device with condensate reduction and discharge effect according to claim 8, characterized in that: A seventeenth delivery pipe is installed at the output end of the third water separator body (44); a water cooler (45) is provided at one end of the seventeenth delivery pipe away from the third water separator body (44); the seventeenth delivery pipe is fixedly connected to the input end of the water cooler (45); an eighteenth delivery pipe is installed at the output end of the water cooler (45); an ammonia washing tower (46) is provided at one end of the eighteenth delivery pipe away from the water cooler (45); the eighteenth delivery pipe is fixedly connected to the input end of the ammonia washing tower (46); a conversion gas external delivery pipeline (48) is installed at the output end of the ammonia washing tower (46); a conversion gas external delivery valve (47) is installed on the conversion gas external delivery pipeline (48).

10. A method for using the high-efficiency conversion device with condensate reduction and discharge effect according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Open the inlet valve (2) of the conversion device to transport the raw coal gas to the inner cavity of the first water separator body (3) through the raw coal gas pipeline (1) to perform the first gas-liquid separation operation, open the inlet valve (12) of the first conversion furnace to allow the first isothermal conversion furnace body (7) to perform a CO conversion reaction on the conversion gas through the feed heat exchanger (5), thereby performing a preliminary conversion reaction on the conversion gas; The first condensate discharge valve (4) and the third condensate discharge valve (43) are opened to transport the condensate generated by gas-liquid separation in the inner cavity of the first water separator body (3) and the third water separator body (44) to the inner cavity of the condensate buffer tank (36) through the condensate discharge pipeline (35); Step 2: Open the first conversion furnace outlet valve (6) to humidify and cool the conversion gas through the feed heat exchanger (5) and the humidifier inlet pipeline (11) through the humidifier body (17); open the second conversion furnace inlet valve (16) to perform a final CO conversion reaction on the conversion gas through the second isothermal conversion furnace (14) so ​​as to facilitate a secondary conversion reaction on the conversion gas; open the second conversion furnace outlet valve (15) to perform heat exchange and cooling operations on the conversion gas through the low-pressure boiler feed water preheater (23) and the medium-pressure boiler feed water preheater (26) through the conversion gas inlet heat exchanger pipeline (19); open the second water separator inlet valve I (24) and the second water separator inlet valve II (25) to perform a second gas-liquid separation operation on the conversion gas through the second water separator body (31); Step 3: The second water separator body (31) can perform heat exchange and cooling operations on the converted gas again through the high-pressure desalted water heat exchanger (29) and the low-pressure desalted water preheater (32), and the third water separator inlet valve II (30) and the third water separator inlet valve I (33) can be opened to perform a third gas-liquid separation operation on the converted gas through the third water separator body (44). The third water separator body (44) performs final heat exchange and cooling on the converted gas through the water cooler (45). The water cooler (45) deammonifies the converted gas through the ammonia scrubbing tower (46). The converted gas delivery valve (47) is opened to transport the deammonified converted gas to the downstream device for use through the converted gas delivery pipeline (48); Step 4: When the liquid level of condensate in the inner cavity of the condensate buffer tank (36) is greater than 65%, the booster pump inlet valve (37), the booster pump outlet valve (39) and the condensate inlet valve (40) of the gasification device are opened, and the condensate booster pump (38) is started to increase the pressure to 5.2 MPa. The condensate can be transported to the gasification device body (41) for use. The recovery pump inlet valve (21), the recovery pump outlet valve (22) and the condensate inlet humidifier valve (18) are opened, and the condensate recovery pump (20) is started to increase the pressure to 5.2 Mpa. After Pa, the condensate can be supplied to the first isothermal conversion furnace body (7) for gas humidification and temperature reduction operations. When the liquid level of the condensate in the inner cavity of the second water separator body (31) is higher than 95%, the second condensate discharge valve (34) is opened, and the condensate in the inner cavity of the second water separator body (31) can be transported to the inner cavity of the condensate buffer tank (36) through the condensate discharge pipeline (35). When the liquid level of the condensate in the inner cavity of the second water separator body (31) is lower than 60%, the second condensate discharge valve (34) is closed; Step 5: During the use of the conversion device, due to unstable operating conditions, in order to avoid insufficient condensed water in the inner cavity of the second water separator body (31) for use by the humidifier body (17) for gas humidification and cooling, the humidifier boiler water inlet valve (10) can be opened to supply the humidifier body (17) with gas humidification and cooling. When the liquid level of condensed water in the inner cavity of the second water separator body (31) is higher than 60%, the humidifier boiler water inlet valve (10) is closed and the second water separator body (31) is used instead to supply the humidifier body (17) with gas humidification and cooling.

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