CN214598058U - Processing system of fraction gas - Google Patents
Processing system of fraction gas Download PDFInfo
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- CN214598058U CN214598058U CN202022902779.XU CN202022902779U CN214598058U CN 214598058 U CN214598058 U CN 214598058U CN 202022902779 U CN202022902779 U CN 202022902779U CN 214598058 U CN214598058 U CN 214598058U
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Abstract
The utility model discloses a gaseous processing system of fraction, include: fraction gas inlet pipeline and heat transfer device, heat transfer device includes: the system comprises a pressure detection module, a first valve control module, a first controller and more than 2 heat exchangers; each heat exchanger comprises a fraction gas heat exchange pipeline, and the fraction gas heat exchange pipeline is provided with a fraction gas inlet, a condensed liquid outlet and a fraction gas outlet; all fraction gas inlets are connected to the fraction gas inlet pipeline, the first valve control module is configured to control the on-off state between all fraction gas inlets and the fraction gas inlet pipeline, and the first controller is in communication connection with the pressure detection module and all first valve control modules. According to the utility model discloses a fraction gas processing system, when a heat exchanger broke down, switched to another heat exchanger through first controller, can realize the clearance of not shutting down on line.
Description
Technical Field
The utility model relates to a fraction gas processing technology field especially relates to a gaseous processing system of fraction.
Background
When materials such as industrial waste clay, oily sludge, municipal sludge and the like are treated by thermal desorption equipment, oil gas and dust are generated when the materials are treated by a thermal desorption process, and the oil phase is extracted from part of fraction gas through condensation, so that the resource utilization of oily wastes is realized. The method has received more and more attention and industry acceptance in the field of oily waste treatment, and has become the most promising oily waste treatment technology at present.
The difficulty in the industry at present is that besides oil gas, water vapor and dust are contained in fraction gas, and a dust, water and oil mixture is generated after condensation and is difficult to separate.
The industry generally adopts a condensation post-treatment mode for distillate gas. The condensation mode includes two main types of direct condensation and indirect condensation. Wherein, indirect condensation adopts heat exchanger condensing equipment usually, and the great heavy oil of viscosity easily leads to the heat exchanger to block up, needs frequent shut down clearance, leads to the fraction gas condensation efficiency lower, seriously delays follow-up treatment efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a gaseous processing system of fraction to solve among the prior art great heavy oil of viscosity and easily lead to the heat exchanger to block up, the clearance is frequent, leads to the lower technical problem of fraction gas condensation efficiency.
In order to solve the above problem, the utility model adopts the following technical scheme:
according to an aspect of the present invention, there is provided a system for treating a distillate gas, comprising: fraction gas inlet pipe and heat transfer device, heat transfer device includes: the system comprises a pressure detection module, a first valve control module, a first controller and more than 2 heat exchangers; each heat exchanger comprises a fraction gas heat exchange pipeline, and the fraction gas heat exchange pipeline is provided with a fraction gas inlet, a condensed liquid outlet and a fraction gas outlet; all the fraction gas inlets are connected to the fraction gas inlet pipeline, the first valve control module is configured to control the on-off state between all the fraction gas inlets and the fraction gas inlet pipeline, and the first controller is in communication connection with the pressure detection module and all the first valve control modules; the pressure detection module is configured to detect the pressure of the fraction gas inside the fraction gas heat exchange pipeline in the current working state and feed the pressure value back to the first controller; the first controller is configured to control the first valve control module to disconnect the fraction gas heat exchange pipe currently in an operating state from the fraction gas inlet pipe and to connect the fraction gas heat exchange pipe in a non-operating state with the fraction gas inlet pipe in response to a pressure value detected by the pressure detection module being higher than a set value.
Optionally, the pressure detection module comprises a pressure gauge, and the pressure gauge is arranged on the fraction gas inlet pipeline; or the pressure detection module comprises a plurality of pressure gauges, the number of the pressure gauges is the same as that of the heat exchangers, and one pressure gauge is arranged at the position of a fraction gas inlet of each heat exchanger.
Optionally, the heat exchange device further comprises a gas replacement module; the gas replacement module is configured to replace the fraction gas in the fraction gas heat exchange conduit.
Optionally, the gas replacement module comprises a replacement gas storage tank, and the replacement gas storage tank is communicated with all the fraction gas heat exchange pipelines through pipelines; or the gas replacement module comprises a plurality of replacement gas storage tanks, the number of the replacement gas storage tanks is the same as that of the heat exchangers, and each replacement gas storage tank is communicated with a corresponding fraction gas heat exchange pipeline through a pipeline; the replacement gas storage tank is a nitrogen gas storage tank.
Optionally, each heat exchanger further comprises a detection port and a gas alarm; the detection port is arranged at the lower part of the heat exchanger and is communicated with a fraction gas heat exchange pipeline in the heat exchanger through a pipeline, and the detection port is communicated with the gas alarm through a pipeline; the gas alarm is configured to detect a concentration of a harmful gas at the detection port and issue an alarm when the concentration is greater than a certain value.
Optionally, each heat exchanger further comprises a purge port disposed at a top of the heat exchanger and in communication with the fraction gas heat exchange conduit therein.
Optionally, the distillate gas treatment system further comprises a sedimentation oil recovery device, wherein the sedimentation oil recovery device comprises a sedimentation tank, an oil tank and a partition plate arranged between the sedimentation tank and the oil tank; the settling tank is arranged below the condensed liquid outlet; the top of the partition is at a height lower than the top surface of the settling tank and the top surface of the oil tank so that the oil phase in the settling tank flows over the partition into the oil tank.
Optionally, the heat exchange device further comprises a back-flushing manifold, each fraction gas heat exchange pipeline further comprises a back-flushing port, one end of the back-flushing manifold is connected to the bottom of the settling tank, and the other end of the back-flushing manifold is connected to the back-flushing port of the heat exchanger.
Optionally, a first interface meter, a sewage draining exit and a second controller in communication connection with the first interface meter and the sewage draining exit are arranged in the sedimentation tank; the first interface meter is configured to display a liquid level height of the aqueous phase in the settling tank.
Optionally, the oil tank is provided with a second interface meter, an oil pumping port, a re-settling assembly and a third controller in communication connection with the second interface meter, the oil pumping port and the re-settling assembly; the second interface meter is configured to display the liquid level height of the water phase and the liquid level height of the oil phase in the oil tank; the heavy sedimentation component is arranged at the bottom of the oil tank and communicated with the sedimentation tank through a pipeline.
Optionally, the heavy settling assembly comprises a positive displacement pump or a diaphragm pump.
Optionally, each heat exchanger further comprises a dust removal assembly, the dust removal assembly comprises a dust remover, the dust remover comprises a dust-containing fraction gas inlet, a dust-removed fraction gas outlet and a dust-containing liquid drop outlet, the dust-containing fraction gas inlet is communicated with the fraction gas outlet through a pipeline, and the dust-containing liquid drop outlet is communicated with the sedimentation tank through a pipeline; the heat exchange device also comprises a second valve control module which is arranged at the fraction gas outlet of each heat exchanger; the second valve control module is configured to control the on-off state between all the fraction gas outlets and the fraction gas heat exchange pipelines, and the first controller is in communication connection with all the second valve control modules.
Optionally, the distillate gas treatment system further comprises a sludge removal device, wherein the sludge removal device comprises a scraper rack and a scraper obliquely arranged on the scraper rack; the scraper conveyor comprises a feeding end and a discharging end; the sedimentation tank and the oil tank are arranged in the scraper rack, and the feeding end of the scraper extends to the bottom of the sedimentation tank; the sludge removal device further comprises a sludge discharge port, and the sludge discharge port is located below the discharge end.
The utility model discloses a technical scheme can reach following beneficial effect:
according to the utility model provides a gaseous processing system of fraction, when a heat exchanger broke down, program control switched to another heat exchanger, can realize the online clearance of not shutting down, effectively improves follow-up treatment effeciency.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is a front view of a system for treating a distillate gas according to the present invention;
FIG. 2 is a side view of a distillate gas treatment system according to the present invention;
fig. 3 is a schematic diagram of a dust collector in the treatment system of distillate gas according to the present invention.
Description of reference numerals:
10 first heat exchanger
11 second heat exchanger
12 first pressure gauge
13 second pressure gauge
101 first fraction gas inlet
102 first condensed liquid outlet
103 first fraction gas outlet
111 second fraction gas inlet
112 second condensed liquid outlet
113 second fraction gas outlet
104A first valve control assembly A
104B first valve control component B
105A second valve control assembly A
105B second valve control Assembly B
106A third valve control assembly A
106B third valve control Assembly B
14 nitrogen gas storage tank
15 detection port
16 cooling water exhaust port
17 back flush manifold
20 sedimentation basin
21 oil tank
22 partition board
201 first interface meter
202 first drain outlet
203 second sewage draining exit
211 second interface meter
212 oil pumping port
214 heavy settlement assembly
30 dust remover
301 gas inlet for dust-containing fraction
302 fraction gas outlet after dust removal
303 dust-laden liquid drop outlet
40 scraper machine
41 scraper frame
42 sludge discharge port
43 water replenishing port
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
According to an embodiment of the present invention, there is provided a system for treating a distillate gas, including: fraction gas inlet pipeline and heat transfer device, heat transfer device includes: pressure detection module, first valve control module, first controller and heat exchanger, wherein, in this application embodiment, heat exchanger quantity can be more than two usually, and pressure detection module can include one or polylith manometer usually, and below combines figure 1 to describe for the example that heat transfer device has two heat exchangers and pressure detection module includes two manometers.
As shown in fig. 1, the heat exchange device comprises 2 heat exchangers, a first heat exchanger 10 and a second heat exchanger 11, wherein a fraction gas heat exchange pipeline of the first heat exchanger 10 is provided with a first fraction gas inlet 101, a first condensed liquid outlet 102 and a first fraction gas outlet 103; the fraction gas heat exchange pipeline of the second heat exchanger 11 is provided with a second fraction gas inlet 111, a second condensed liquid outlet 112 and a second fraction gas outlet 113; the first fraction gas inlet 101 and the second fraction gas inlet 111 are both connected to a fraction gas inlet conduit; the first valve control module comprises a first valve control assembly A104A and a first valve control assembly B104B, the first valve control assembly A104A is arranged at a fraction gas inlet of the first heat exchanger 10, the first valve control assembly B104B is arranged at a fraction gas inlet of the second heat exchanger 11, and the first valve control assembly A104A arranged on the first heat exchanger 10 is configured to control the on-off state between the first fraction gas inlet 101 and a fraction gas inlet pipeline; the first valve control assembly B104B provided on the second heat exchanger 11 is configured to control the on-off state between the second fraction gas inlet 111 and the fraction gas inlet pipe.
In the working state of the processing system in this embodiment, the fraction gas heat exchange pipeline in one of the heat exchangers is communicated with the fraction gas inlet pipeline to be in a working state, and the fraction gas heat exchange pipelines in the other heat exchangers are disconnected from the fraction gas inlet pipeline to be in a non-working state, that is, a standby state. For example, the first valve control assembly a 104A is first opened, the fraction gas heat exchange pipeline of the first heat exchanger 10 is connected with the fraction gas inlet pipeline and is in an operating state, the first valve control assembly B104B is closed, and the fraction gas heat exchange pipeline of the second heat exchanger 11 is disconnected from the fraction gas inlet pipeline and is in an inoperative state. Of course, the opposite is also possible. A first pressure gauge 12 is arranged at a first fraction gas inlet 101 of the first heat exchanger 10; a second pressure gauge 13 is arranged at a second fraction gas inlet 111 of the second heat exchanger 11; the first controller is respectively in communication connection with a first pressure gauge 12, a second pressure gauge 13, a first valve control assembly A104A of the first heat exchanger 10 and a first valve control assembly B104B of the second heat exchanger 11; the first pressure gauge 12 and the second pressure gauge 13 are configured to detect the pressure of the distillate gas inside the distillate gas heat exchange conduit currently in operation and feed back the pressure value to the first controller.
In the use process of the first heat exchanger 10 and the second heat exchanger 11, the fraction gas in the fraction gas heat exchange pipeline is continuously condensed by the condensed water in the shell pass of the first heat exchanger 10 and the second heat exchanger 11, oil drops and other dust particles are continuously attached to the pipe wall of the fraction gas heat exchange pipeline, when the continuously attached oil drops and other dust particles are accumulated to a certain degree, the fraction gas heat exchange pipeline is blocked, so that the internal pressure of the fraction gas heat exchange pipeline is increased, in the embodiment, the pressure of the fraction gas in the fraction gas heat exchange pipeline of the first heat exchanger 10 is detected by a first pressure gauge 12, or the pressure of the fraction gas in the fraction gas heat exchange pipeline of the second heat exchanger 11 is detected by a second pressure gauge 13, so as to obtain the pressure of the fraction gas in the fraction gas heat exchange pipeline of the first heat exchanger 10 or the second heat exchanger 11, of course, in another embodiment, the number of the pressure gauges may be one, in which case the pressure gauge is disposed on the fraction gas inlet pipe, and the pressure of the fraction gas inside the fraction gas heat exchange pipe may also be obtained by detecting the pressure of the fraction gas inside the fraction gas inlet pipe. And when the numerical value of the pressure gauge is higher than a set value, alarming is carried out, whether the first heat exchanger 10 or the second heat exchanger 11 in the working state is blocked or not can be judged, whether the first heat exchanger 10 and the second heat exchanger 11 need to be cleaned or not can be judged, when the obtained pressure value is higher than the set value, the pressure value is fed back to the first controller, and the first controller controls the first valve control module to disconnect the communication state of the fraction gas heat exchange pipeline and the fraction gas inlet pipeline which are blocked or not and enable the fraction gas heat exchange pipeline and the fraction gas heat exchange pipeline of the other heat exchange pipe which is not blocked to be in the communication state.
In this embodiment, by providing the first heat exchanger 10, the second heat exchanger 11, the first valve control assembly 104A, the second valve control assembly 104B and the first controller, when one heat exchanger is blocked, for example, when the first heat exchanger 10 is blocked, the first controller is switched to the second heat exchanger 11, so that online non-stop cleaning can be realized, and the subsequent processing efficiency can be effectively improved.
It will be appreciated that when more heat exchangers are included in this embodiment, more spare heat exchangers are available for replacement in the event of a blockage, thereby making the cleaning process more time-consuming.
In order to improve the safety when cleaning the failed heat exchanger, the heat exchange device may further include a nitrogen gas storage tank 14 for replacing the fraction gas in the fraction gas heat exchange pipeline, and the number of the nitrogen gas storage tanks 14 may be generally one or more, as shown in fig. 1, in this embodiment, each of the first heat exchanger 10 and the second heat exchanger 11 is provided with one nitrogen gas storage tank 14 communicated with the fraction gas heat exchange pipeline of the first heat exchanger 10 and the second heat exchanger 11.
In the present embodiment, each of the first heat exchanger 10 and the second heat exchanger 11 may further include a detection port 15 and a gas alarm (not shown in the figure); the detection port 15 is arranged at the lower part of the first heat exchanger 10 and the second heat exchanger 11 and is communicated with a fraction gas pipeline in the first heat exchanger 10 and the second heat exchanger 11 through pipelines, and the detection port 15 is communicated with a gas alarm through a pipeline; the gas alarm can detect CO and/or H at the detection port2S concentration and an alarm is issued when the concentration is greater than a certain value.
In this embodiment, each of the first heat exchanger 10 and the second heat exchanger 11 may further include a purge port, which is disposed at the top of the first heat exchanger 10 and the second heat exchanger 11, respectively, and is communicated with the fraction gas heat exchange pipes in the first heat exchanger 10 and the second heat exchanger 11, respectively. The shell sides of the first heat exchanger 10 and the second heat exchanger 11 are introduced with cooling liquid to indirectly condense distillate gas. The coolant line is provided with a coolant water exhaust port 16.
When one of the first heat exchanger 10 and the second heat exchanger 11 is clogged and needs to be repaired, the gas in the clogged heat exchanger can be replaced by the gas in the nitrogen gas storage tank 14, and the gas alarm can be used to detect CO and/or H at the detection port 152Concentration of S, whereby occurrence ofCO and/or H during uncapping clean-up of plugged heat exchangers2And the potential safety hazard caused by S ensures the safety of maintenance personnel to the maximum extent.
In this embodiment, in order to improve the separation efficiency of the oil phase and the water phase in the condensed liquid obtained after condensation in the first heat exchanger 10 and the second heat exchanger 11, the distillate gas treatment system may further include a settling oil-collecting device, as shown in fig. 2, the settling oil-collecting device includes a settling tank 20, an oil tank 21, and a partition 22 disposed between the settling tank and the oil tank; the settling tank 20 is disposed below the condensed liquid outlet, for example, below the first condensed liquid outlet 102 and the second condensed liquid outlet 112; the top of the partition 22 is at a level lower than the level at which the top surface of the settling tank 20 and the top surface of the oil tank 21 are located so that the oil phase in the settling tank 20 can flow over the partition 22 into the oil tank 21.
Wherein, when the fraction gas treatment system is in operation, the bottoms of the first condensed liquid outlet 102 and the second condensed liquid outlet 112 are located below the liquid level of the settling tank 20, so as to prevent the gas in the fraction gas heat exchange pipeline from leaking out by the water sealing function of the liquid surface to the first condensed liquid outlet 102 and the second condensed liquid outlet 112.
Further, in this embodiment, the heat exchange device may further include a back-flushing manifold 17, the first heat exchanger 10 and the second heat exchanger 11 are respectively provided with one back-flushing manifold 17, the fraction gas heat exchange pipelines of the first heat exchanger 10 and the second heat exchanger 11 are respectively provided with a back-flushing port, one end of the back-flushing manifold 17 is connected to the bottom of the sedimentation tank 20, and the other end of the back-flushing manifold 17 is connected to the back-flushing ports of the first heat exchanger 10 and the second heat exchanger 11. Therefore, the online flushing time of the backwashing manifold 17 is set according to the on-site working condition and the time interval of material blockage, and the flushing time can be irregular or timed. For example, an on-line backwash for 30 seconds may be initiated every 30 minutes to provide a timed purge of the distillate gas heat exchange tube interior.
Specifically, a first interface meter 201, a first drain outlet 202 and a second controller in communication connection with the first interface meter 201 and the first drain outlet 202 are arranged in the sedimentation tank 20; the first interface meter 201 is configured to display the level of the aqueous phase in the settling tank 20. The second controller is configured to open the first drain port 202 when the liquid level height of the aqueous phase displayed by the first interface meter 201 reaches a first predetermined value and close the first drain port 202 when the liquid level height of the aqueous phase displayed by the first interface meter 201 falls to a second predetermined value. That is, when the liquid level height of the aqueous phase in the sedimentation tank 20 reaches a certain value, the second controller controls the first drain port 202 to automatically drain, and when the liquid level height of the aqueous phase measured by the first interface meter 201 in the sedimentation tank 20 falls to a certain value, the second controller controls the first drain port 202 to stop draining. The upper part of the sedimentation tank 20 is provided with a water replenishing port 43 for replenishing water when the machine is started for the first time.
The oil tank 21 is provided with a second interface meter 211, an oil pumping port 212, a heavy settlement component 214, a second sewage draining port 203 and a third controller which is in communication connection with the second interface meter 211, the oil pumping port 212, the heavy settlement component 214 and the second sewage draining port 203; the second interface meter 211 is configured to display the level height of the water phase and the level height of the oil phase in the oil tank 21; the heavy settling assembly 214 is arranged at the bottom of the oil tank 21 and is communicated with the settling pond 20 through a pipeline. The third controller is configured to activate the re-settling assembly 214 when the liquid level of the water phase displayed by the second interface meter 211 reaches a third predetermined value, to turn off the re-settling assembly 214 when the liquid level of the water phase displayed by the second interface meter 211 falls to a fourth predetermined value, and to turn on the oil pumping port 212 when the liquid level of the oil phase displayed by the second interface meter 211 reaches a fifth predetermined value. That is, when the second interface meter 211 in the oil tank 21 detects that the liquid level of the water phase in the oil tank 21 reaches a certain value, the third controller controls the heavy settling component 214 to start, so as to return the water phase in the oil tank 21 and the sludge at the bottom of the water phase to the settling tank 20. When the second interface meter 211 in the oil tank 21 detects that the liquid level of the water phase therein drops to a certain value, the third controller controls the heavy settling component 214 to stop discharging. When the second interface meter 211 in the oil tank 21 detects that the liquid level of the oil phase therein reaches a certain value, oil is pumped through the oil pumping port 212. In this embodiment, the heavy settling assembly 214 may also be a positive displacement pump, although in other embodiments, a diaphragm pump may also be used. When the treatment system is abnormally stopped, the oil tank needs to be cleaned quickly due to cold in winter. The second sewage draining outlet 203 is opened at the same time to accelerate the draining speed.
Further, as shown in fig. 3, the first heat exchanger 10 and the second heat exchanger 11 each further comprise a dust remover 30, the dust remover 30 comprises a dust-containing fraction gas inlet 301, a fraction gas outlet 302 after dust removal and a dust-containing liquid drop outlet 303, wherein the dust-containing fraction gas inlet 301 is communicated with the fraction gas outlet 103 of the first heat exchanger 10 and the fraction gas outlet 113 of the second heat exchanger 11 through pipelines, and the dust-containing liquid drop outlet 303 is communicated with the settling tank 20 through a pipeline; the second valve control module comprises a first second valve control assembly 105A and a second valve control assembly 105B, wherein the first second valve control assembly 105A is arranged at a fraction gas outlet 103 of the first heat exchanger 10, and the second valve control assembly 105B is arranged at a fraction gas outlet 113 of the second heat exchanger 11; the second valve control assembly A105A is configured to control the on-off state between the fraction gas outlet 103 and the fraction gas heat exchange pipeline, the second valve control assembly B105B is configured to control the on-off state between the fraction gas outlet 113 and the fraction gas heat exchange pipeline, and the first controller is respectively in communication connection with the first pressure gauge 12, the second pressure gauge 13, the second valve control assembly A105A and the second valve control assembly B105B. By arranging the dust remover 30, the condensed gas phase (mainly comprising methane and hydrogen, oil drops and dust particles) can be separated, and the fraction gas (mainly comprising methane and hydrogen) and the dust-containing liquid drops (comprising oil drops and dust particles) after dust removal are obtained. The dust collector 30 is based on the principle that when wind blows over an obstacle, the air pressure is relatively low near the port above the lee side of the obstacle, so that adsorption occurs and air flow is caused. The dust remover is to make the gas flow from coarse to fine to accelerate the gas flow rate, so that the gas forms a 'vacuum' area at the rear side of the outlet of the dust remover. When the vacuum area is close to the workpiece, a certain adsorption effect is generated on the workpiece. A water stream is drawn in through the manifold and broken up for dust removal.
Further, the third valve control module comprises a first third valve control assembly 106A and a second third valve control assembly 106B, the first third valve control assembly 106A is arranged at the first condensed liquid outlet 102, the second third valve control assembly 106B is arranged at the second condensed liquid outlet 112, and the first controller is respectively connected with the first pressure gauge 12, the second pressure gauge 13, the first third valve control assembly 106A and the second third valve control assembly 106B in a communication mode.
In this embodiment, the distillate gas treatment system may further include a sludge removal device including a squeegee frame 41 and a squeegee 40 mounted obliquely on the squeegee frame 41; the scraper conveyor comprises a feeding end and a discharging end; the settling tank 20 and the oil tank 21 are arranged in the scraper frame 41, and the feeding end of the scraper conveyor 40 extends to the bottom of the settling tank 20. The sludge removal device further comprises a sludge discharge port 42, and the sludge discharge port 42 is positioned below the discharge end.
In this embodiment, the flight 40 has no corners and is mounted in the flight frame 41 at an angle to reduce chain stress. The bottom of the scraper conveyor is provided with an oil-resistant rubber plate, so that the scraper and a bottom plate 41 of the scraper rack are ensured to have no clearance. The main function of the scraper frame 41 is to support and fix the scraper frame, and reinforcing ribs are welded outside the scraper frame to prevent the sedimentation tank from deforming. The discharge port of the scraper frame 41 is required to be arranged on the closed discharge box. The sludge removal device is integrated with the sedimentation tank 20, and the scraper conveyor 40 adopts a linear form, scrapes sludge obliquely upwards, has no corner and reduces the stress of the chain.
Specifically, the first valve control assembly a 104A, the first valve control assembly B104B, the second valve control assembly a 105A, the second valve control assembly B105B, the third valve control assembly a 106A and the third valve control assembly B106B each include a first valve (electric or pneumatic) and a second valve (electric or pneumatic), the first valve may be a gate valve, a ball valve, a butterfly valve or a stop valve, and the second valve may be a glasses valve; the first controller controls the first valve (e.g., gate valve) and the second valve (e.g., eyewear valve) simultaneously. A first valve, such as a gate valve, functions as a normal open and closed valve and a second valve, such as an eye valve, functions as an absolute shut-off for toxic, harmful, flammable gases. When the valve control module is opened, a first valve such as a gate valve is opened first and then a second valve such as an eye valve is opened, and when the valve control module is closed, the second valve such as an eye valve is closed first and then the first valve such as a gate valve is closed. The first valve control module, the second valve control module and the third valve control module form a reliable combustible gas partition module.
In this embodiment, the method of operating a distillate gas processing system comprises: for example, when the first heat exchanger 10 is in an operating state, the pressure of the distillate gas inside the first heat exchanger 10 is detected by the first pressure gauge 12, an alarm is given when the pressure value detected by the first pressure gauge 12 is higher than a set value, and the pressure value is fed back to the first controller, and the first controller switches the first valve control module, the second valve control module and the third valve control module, that is, closes the first valve control component a 104A, the second valve control component a 105A and the third valve control component a 106A of the first heat exchanger 10 currently in the operating state, and simultaneously opens the first valve control component B104B, the second valve control component B105B and the third valve control component B106B of the second heat exchanger 11. The first heat exchanger 10 is changed from the working state to the state to be cleaned, and all air inlets are separated by the first valve control assembly A104A, the second valve control assembly A105A and the third valve control assembly A106A, so that air is prevented from overflowing or entering. The first valve control assembly B104B, the second valve control assembly B105B and the third valve control assembly B106B of the second heat exchanger 11 are opened, and the second heat exchanger 11 enters a working state. The method of cleaning the first heat exchanger 10 includes: firstly, nitrogen is filled into a fraction gas heat exchange pipeline of the first heat exchanger 10 through the nitrogen storage tank 14 to replace fraction gas in the fraction gas heat exchange pipeline, then the second valve control assembly A105A is opened to press the fraction gas in the first heat exchanger 10 to rear end gas treatment equipment, such as a dust remover 30, and when the nitrogen is filled for a specified time, the detection port 15 can be opened to detect CO and/or H in the fraction gas heat exchange pipeline of the first heat exchanger 102And (5) checking whether the replacement is finished or not by using a gas alarm for the concentration of S. When CO and/or H2When the concentration of S is more than the specific value, the gas alarm gives an alarm, and the nitrogen is introduced into the fraction gas heat exchange pipeline again and repeatedlyA step of gas to replace the fraction gas in the fraction gas heat exchange pipeline; if no alarm is given, the top cover can be opened for cleaning, and the cleaning mode can be mechanical cleaning, chemical cleaning, high-pressure water cleaning and steam cleaning. Taking into account the effect of back-end water treatment, steam cleaning is employed in this embodiment. The back flush manifold 17 is connected at one end to the bottom of the settling tank 20 and at the other end to the back flush ports of the first heat exchanger 10 and the second heat exchanger 11. And a basket filter is added in the middle section of the back flushing manifold 17, and the first heat exchanger 10 and the second heat exchanger 11 are flushed on line by using high-pressure water in the sedimentation tank 20.
To sum up, the utility model discloses an above fraction gas treatment system can effectively solve the ubiquitous heat exchanger of existing equipment and easily block up, the difficult clearance of settling cask bed mud, mud scraper atress is too big temper the chain, subside the effect poor, profit emulsification is serious, waste water output is big, the heat exchanger blocks up makes gaseous excessive dangerous scheduling problem that causes.
The utility model discloses what the key description in the above embodiment is different between each embodiment, and different optimization characteristics are as long as not contradictory between each embodiment, all can make up and form more preferred embodiment, consider that the literary composition is succinct, then no longer describe here.
Claims (13)
1. A system for processing a distillate gas, comprising: fraction gas inlet pipe and heat transfer device, heat transfer device includes: the system comprises a pressure detection module, a first valve control module, a first controller and more than 2 heat exchangers;
each heat exchanger comprises a fraction gas heat exchange pipeline, and the fraction gas heat exchange pipeline is provided with a fraction gas inlet, a condensed liquid outlet and a fraction gas outlet;
all the fraction gas inlets are connected to the fraction gas inlet pipeline, the first valve control module is configured to control the on-off state between all the fraction gas inlets and the fraction gas inlet pipeline, and the first controller is in communication connection with the pressure detection module and all the first valve control modules;
the pressure detection module is configured to detect the pressure of the fraction gas inside the fraction gas heat exchange pipeline in the current working state and feed the pressure value back to the first controller;
the first controller is configured to control the first valve control module to disconnect the fraction gas heat exchange pipe currently in an operating state from the fraction gas inlet pipe and to connect the fraction gas heat exchange pipe in a non-operating state with the fraction gas inlet pipe in response to a pressure value detected by the pressure detection module being higher than a set value.
2. The fraction gas treatment system according to claim 1,
the pressure detection module comprises a pressure gauge, and the pressure gauge is arranged on the distillate gas inlet pipeline;
or
The pressure detection module comprises a plurality of pressure gauges, the number of the pressure gauges is the same as that of the heat exchangers, and one pressure gauge is arranged at a fraction gas inlet of each heat exchanger.
3. The distillate gas treatment system of claim 1, wherein the heat exchange device further comprises a gas displacement module;
the gas replacement module is configured to replace the fraction gas in the fraction gas heat exchange conduit.
4. The fraction gas processing system according to claim 3,
the gas replacement module comprises a replacement gas storage tank which is communicated with all the fraction gas heat exchange pipelines through pipelines;
or
The gas replacement module comprises a plurality of replacement gas storage tanks, the number of the replacement gas storage tanks is the same as that of the heat exchangers, and each replacement gas storage tank is communicated with a corresponding fraction gas heat exchange pipeline through a pipeline;
the replacement gas storage tank is a nitrogen gas storage tank.
5. The distillate gas treatment system of claim 1, wherein each of the heat exchangers further comprises a detection port and a gas alarm;
the detection port is arranged at the lower part of the heat exchanger and is communicated with a fraction gas heat exchange pipeline in the heat exchanger through a pipeline, and the detection port is communicated with the gas alarm through a pipeline;
the gas alarm is configured to detect a concentration of a harmful gas at the detection port and issue an alarm when the concentration is greater than a certain value.
6. The fraction gas processing system according to claim 1, wherein each of the heat exchangers further comprises a purge port disposed at a top of the heat exchanger and communicating with the fraction gas heat exchange conduit in the heat exchanger.
7. The distillate gas treatment system according to claim 1, further comprising a settling oil collector comprising a settling tank, an oil tank, and a partition plate disposed between the settling tank and the oil tank;
the settling tank is arranged below the condensed liquid outlet;
the top of the partition is at a height lower than the top surface of the settling tank and the top surface of the oil tank so that the oil phase in the settling tank flows over the partition into the oil tank.
8. The distillate gas treatment system of claim 7, wherein the heat exchange device further comprises a back-flushing manifold, each of the distillate gas heat exchange tubes further comprises a back-flushing port, one end of the back-flushing manifold is connected to the bottom of the settling tank, and the other end of the back-flushing manifold is connected to the back-flushing port of the heat exchanger.
9. The distillate gas treatment system according to claim 7, wherein a first interface meter, a sewage outlet and a second controller which is in communication connection with the first interface meter and the sewage outlet are arranged in the sedimentation tank;
the first interface meter is configured to display a liquid level height of the aqueous phase in the settling tank.
10. The distillate gas treatment system according to claim 7, wherein the oil tank is provided with a second interface meter, an oil pumping port, a re-settling assembly and a third controller in communication connection with the second interface meter, the oil pumping port and the re-settling assembly;
the second interface meter is configured to display the liquid level height of the water phase and the liquid level height of the oil phase in the oil tank;
the heavy sedimentation component is arranged at the bottom of the oil tank and communicated with the sedimentation tank through a pipeline.
11. The distillate gas treatment system of claim 10, wherein the heavy ends assembly comprises a positive displacement pump or a diaphragm pump.
12. A fraction gas processing system as claimed in claim 7, wherein each of said heat exchangers further comprises a dust removal assembly, said dust removal assembly comprising a dust remover, said dust remover comprising a dusty fraction gas inlet in line communication with said fraction gas outlet, a post-dust fraction gas outlet, and a dusty liquid droplet outlet, said dusty liquid droplet outlet in line communication with said settling pond;
the heat exchange device also comprises a second valve control module which is arranged at the fraction gas outlet of each heat exchanger;
the second valve control module is configured to control the on-off state between all the fraction gas outlets and the fraction gas heat exchange pipelines, and the first controller is in communication connection with all the second valve control modules.
13. The distillate gas treatment system according to claim 7, further comprising a sludge removal device comprising a scraper frame and a scraper mounted obliquely on the scraper frame;
the scraper conveyor comprises a feeding end and a discharging end;
the sedimentation tank and the oil tank are arranged in the scraper rack, and the feeding end of the scraper extends to the bottom of the sedimentation tank;
the sludge removal device further comprises a sludge discharge port, and the sludge discharge port is located below the discharge end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022902779.XU CN214598058U (en) | 2020-12-04 | 2020-12-04 | Processing system of fraction gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022902779.XU CN214598058U (en) | 2020-12-04 | 2020-12-04 | Processing system of fraction gas |
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| CN214598058U true CN214598058U (en) | 2021-11-05 |
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