Bulk-process ABS (anti-lock brake system) device

Abstract

The utility model relates to a bulk ABS (Anti-lock Brake System) device. The device comprises a main feeding pump and a first filter, the first filter comprises a first filtering inlet and a first filtering outlet, and a first valve is arranged on a communicating pipeline of the main feeding pump and the first filtering inlet; the pre-heater, the reactor, the devolatilization device and the die head discharging device are sequentially communicated; a third valve is arranged on a communicating pipeline of the first filtering outlet and the pre-heater; the styrene feeding unit and the ethylbenzene feeding unit are communicated with each other; a seventh valve is arranged on a communicating pipeline between the styrene feeding unit and the first filtering inlet; the bypass pipeline is used for connecting the styrene feeding unit and the reactor, a stop valve assembly is arranged on the bypass pipeline, and the emptying valve assembly is communicated with the bypass pipeline. The production cost of the device can be reduced, the device is more environment-friendly, the production safety, flexibility and stability of the device are improved, and the effect is remarkable.

Description

TECHNICAL FIELD

[0001] The utility model relates to ABS device technical field, especially in a kind of ontology method ABS device. BACKGROUND

[0002] ABS is the ternary copolymer of three monomers of acrylonitrile (A), butadiene (B) and styrene (S). ABS device can produce ABS, and also can produce polystyrene (PS) by introducing styrene and ethylbenzene.

[0003] At present, ABS device has the following problems:

[0004] 1. The production process of ABS device is long and complex, and it is easy to cause production fluctuation due to improper operation. At the same time, the main feed filter inlet and outlet valve and the communication valve cannot be replaced when producing PS, and the device must be stopped and the production system must be emptied before replacement. Due to the particularity of the ABS process, the replacement of the main feed filter valve according to the original process not only increases the production cost, but also costs millions of dollars for each stop-start, and a main feed filter valve only costs more than 60,000 yuan. Moreover, it takes a long time from stopping to valve replacement to starting, which takes nearly 7 days.

[0005] 2. The temperature control of the material side outlet of the preheater is unstable, which often affects the temperature of the subsequent reaction system, causing production fluctuation.

[0006] 3. The reactor venting pipeline is vented from the upper part. The pipeline is bag-shaped in site arrangement, and the material in the pipeline is easy to self-aggregate and block the pipeline, which causes the device to be unable to start production of PS. INVENTION CONTENTS

[0007] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an ontology method ABS device, which can not only reduce the production cost of the device, but also is more environmentally friendly, and improves the safety, flexibility and stability of the device production, thereby solving the problems in the prior art.

[0008] To achieve the above-mentioned purpose and other related purposes, the utility model provides an ontology method ABS device, which comprises a main feed pump, a first filter, the first filter comprises a first filter inlet and a first filter outlet, and a first valve is arranged on the communication pipeline between the main feed pump and the first filter inlet; further comprising a preheater, a reactor, a devolatilizer and a die head discharge which are sequentially communicated, and a third valve is arranged on the communication pipeline between the first filter outlet and the preheater; further comprising a styrene feed unit and an ethylbenzene feed unit which are communicated through a pipeline, and a seventh valve is arranged on the communication pipeline between the styrene feed unit and the first filter inlet; further comprising a bypass pipeline for connecting the styrene feed unit and the preheater, and a cut-off valve assembly is arranged on the bypass pipeline; further comprising a purge valve assembly which is communicated with the bypass pipeline.

[0009] In some embodiments of the present application, a second filter is further included, the second filter comprising a second filter inlet and a second filter outlet, a second valve being arranged on a connecting pipeline between the main feed pump and the second filter inlet, and a fourth valve being arranged on a connecting pipeline between the second filter outlet and the preheater.

[0010] In some embodiments of the present application, a fifth valve is arranged on a connecting pipeline between the second filter outlet and the first filter inlet, and a sixth valve is arranged on a connecting pipeline between the first filter outlet and the second filter inlet.

[0011] In some embodiments of the present application, an eighth valve is arranged on a connecting pipeline between the styrene feed unit and the second filter inlet.

[0012] In some embodiments of the present application, one or more main feed flow meters are further arranged on a connecting pipeline between the first filter outlet and / or the second filter outlet and the preheater.

[0013] In some embodiments of the present application, a switch ball valve is arranged between adjacent main feed flow meters.

[0014] In some embodiments of the present application, a tenth valve is arranged between the main feed flow meter and the preheater.

[0015] In some embodiments of the present application, a main feed flow meter bypass is further included, a ninth valve being arranged between the main feed flow meter bypass and the preheater, and the bypass pipeline being in communication with the pipeline where the ninth valve is arranged.

[0016] In some embodiments of the present application, the shut-off valve assembly comprises a first shut-off valve and a second shut-off valve, wherein the first shut-off valve is arranged at one end close to the styrene feed unit, and the second shut-off valve is arranged at one end close to the preheater.

[0017] In some embodiments of the present application, the purge valve assembly comprises a first purge valve and a second purge valve, the first purge valve and the second purge valve being respectively arranged between the first shut-off valve and the second shut-off valve, and the first purge valve being close to the first shut-off valve, and the second purge valve being close to the second shut-off valve.

[0018] In some embodiments of the present application, the device further comprises a styrene flow meter and a styrene flow meter regulating valve.

[0019] In some embodiments of the present application, the device further comprises an ethylbenzene flow meter and an ethylbenzene flow meter regulating valve.

[0020] In some embodiments of the utility model, the number of reactors is multiple, each reactor is connected in series, the feed inlet of the first reactor is communicated with the preheater, and the discharge outlet of the last reactor is communicated with the feed inlet of the devolatilizer.

[0021] In some embodiments of the utility model, the top of the reactor is provided with a venting pipeline, the venting pipeline is communicated with the devolatilizer, and the height of the venting pipeline is lower than the height of the top outlet of the reactor.

[0022] In some embodiments of the utility model, the preheater comprises a preheater material outlet, a preheater guide oil inlet and a preheater guide oil outlet, the preheater material outlet is communicated with the reactor, a pump body is arranged on the communication pipeline of the preheater guide oil inlet and the preheater guide oil outlet, and a cold oil unit, a medium-temperature oil heat exchange unit and an overflow oil unit are further arranged, the cold oil unit, the medium-temperature oil heat exchange unit and the overflow oil unit are communicated with a converging pipeline through a cold oil pipeline, a medium-temperature oil pipeline and an overflow oil pipeline respectively, and the converging pipeline is communicated with the preheater guide oil outlet.

[0023] In some embodiments of the utility model, temperature sensors are arranged on the pipelines of the preheater material outlet, the preheater guide oil inlet and the preheater guide oil outlet respectively, flow regulating valves are arranged on the cold oil pipeline, the medium-temperature oil pipeline and the overflow oil pipeline respectively, and a control unit is further arranged and connected with the temperature sensors and the flow regulating valves.

[0024] Compared with the prior art, the utility model has the advantages that:

[0025] 1、 the device of the utility model, through increase bypass pipeline, can shorten PS production process, simple production operation, prevent the production fluctuation caused by improper operation, in addition, when the production line maintains the production PS, the replacement of each valve of main feed filter is carried out, and the production line does not need to stop, and the corresponding system is emptied. On the one hand, it can save millions of production costs. On the other hand, the production line does not need to stop, and only needs to switch the production PS, from switching the production PS to replacing the valve to producing ABS, it is only one day, greatly saves the time cost.

[0026] 2、 the device of the utility model, further carries out temperature control in the preheater, and the temperature control of the preheater material side outlet is more stable during production, ensures that the material temperature control of the reactor is stable, prevents the temperature of the reaction system from jumping up and down, guarantees the temperature control stability of the whole reaction system, thereby improves the running stability of the whole device.

[0027] 3. The device of the utility model, further optimize the reactor vent pipeline field layout, set it directly at the top of reactor, the height of vent pipeline is lower than the height of the top outlet of reactor, can eliminate the pipe bag type, prevent material from blocking the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The structure schematic drawing of the body method ABS device of the utility model is shown.

[0029] Figure 2 The component structure schematic drawing of the preheater of the utility model for temperature control is shown.

[0030] Element number explanation:

[0031] 1 main feed pump

[0032] 2 first filter

[0033] 201 first filter inlet

[0034] 202 first filter outlet

[0035] 3 second filter

[0036] 301 second filter inlet

[0037] 302 second filter outlet

[0038] 4 reactor

[0039] 5 styrene feed unit

[0040] 6 ethylbenzene feed unit

[0041] 7 bypass pipeline

[0042] 8 cut-off valve assembly

[0043] 801 first cut-off valve

[0044] 802 second cut-off valve

[0045] 9 purge valve assembly

[0046] 901 first purge valve

[0047] 902 second purge valve

[0048] 10 main feed flowmeter

[0049] 11 first valve

[0050] 12 second valve

[0051] 13 third valve

[0052] 14 fourth valve

[0053] 15 fifth valve

[0054] 16 sixth valve

[0055] 17 seventh valve

[0056] 18 eighth valve

[0057] 19 ninth valve

[0058] 20 tenth valve

[0059] 21 on-off ball valve

[0060] 22 styrene flow meter

[0061] 23 styrene flow meter control valve

[0062] 24 ethylbenzene flow meter

[0063] 25 ethylbenzene flow meter control valve

[0064] 26 main feed flow meter bypass

[0065] 27 preheater

[0066] 271 preheater material outlet

[0067] 272 preheater guide oil inlet

[0068] 273 preheater guide oil outlet

[0069] 28 devolatilizer

[0070] 29 die discharge

[0071] 30 vent line

[0072] 31 pump body

[0073] 32 cold oil unit

[0074] 33 medium temperature oil heat exchange unit

[0075] 34 overflow oil heat exchange unit

[0076] 35 temperature sensor

[0077] 36 flow control valve

[0078] 37 cold oil line

[0079] 38 medium temperature oil line

[0080] 39 overflow oil line

[0081] 40 combining line Detailed Implementation

[0082] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0083] The terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0084] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0085] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0086] See Figure 1 This utility model provides a bulk ABS production apparatus, comprising: a main feed pump 1 and a first filter 2. The first filter 2 includes a first filter inlet 201 and a first filter outlet 202. A first valve 11 is provided on the connecting pipeline between the main feed pump 1 and the first filter inlet 201. The apparatus also includes a preheater 27, a reactor 4, a devolatilizer 28, and a die outlet 29 connected in sequence. A third valve 13 is provided on the connecting pipeline between the first filter outlet 202 and the preheater 27. Therefore, during ABS production, the first valve 11 and the third valve 13 are opened, and the raw materials for ABS production are melted and then fed through the main feed pump 1 and the first filter inlet 201 into the first filter 2 for filtration. After filtration, the raw materials first pass through the preheater 27 from the first filter outlet 202 before entering the reactor 4 for reaction.

[0087] In the body-based ABS device provided in this embodiment of the utility model, such as Figure 1In some embodiments, the device further comprises a second filter 3, the second filter 3 comprising a second filter inlet 301 and a second filter outlet 302, a second valve 12 being arranged on the connecting pipeline between the main feed pump 1 and the second filter inlet 301, and a fourth valve 14 being arranged on the connecting pipeline between the second filter outlet 302 and the preheater 27.

[0088] In use, the first valve 11 and the sixth valve 16 are opened, the second valve 12, the third valve 13 and the fifth valve 15 are closed, and the raw materials for producing ABS are melted and then fed into the first filter 2 through the first filter inlet 201 in the pipeline where the first valve 11 is arranged, filtered, and then fed into the second filter 3 through the second filter inlet 301 in the pipeline where the sixth valve 16 is arranged, and further fed into the reactor 4 through the preheater 27 in the pipeline where the fourth valve 14 is arranged for reaction.

[0089] When the first filter 2 needs to be replaced, the first valve 11 and the sixth valve 16 are closed, the second valve 12 is opened, and the main feed pump 1 is fed into the second filter 3 through the second filter inlet 301 in the pipeline where the second valve 12 is arranged, filtered, and then fed into the reactor 4 through the preheater 27 in the pipeline where the fourth valve 14 is arranged for reaction.

[0090] After the replacement is completed, the fifth valve 15 and the third valve 13 are opened, the fourth valve 14 is closed, the main feed pump 1 is fed into the second filter 3 through the second filter inlet 301 in the pipeline where the second valve 12 is arranged, fed into the first filter 2 through the first filter inlet 201 in the pipeline where the fifth valve 15 is arranged, filtered, and then fed into the reactor 4 through the preheater 27 in the pipeline where the third valve 13 is arranged for reaction.

[0091] In the body method ABS device provided by the embodiment of the utility model, Figure 1 The device further comprises a styrene feed unit 5 and an ethylbenzene feed unit 6 connected by pipelines, and a seventh valve 17 is arranged on the connecting pipeline between the styrene feed unit 5 and the first filter inlet 201. When PS is produced, the first valve 11 is closed, the seventh valve 17 is opened, the styrene feed unit 5 and the ethylbenzene feed unit 6 are fed into the first filter 2 through the pipeline where the seventh valve 17 is arranged, filtered, and then fed into the reactor 4 through the pipeline where the third valve 13 is arranged for reaction.

[0092] In some embodiments, if there is a second filter 3, a eighth valve 18 is arranged on the connecting pipeline of the styrene feeding unit 5 and the second filter inlet 301. When producing PS, the first valve 11, the second valve 12, the third valve 13, the fifth valve 15, the sixth valve 16 and the seventh valve 17 are closed, the eighth valve 18 and the fourth valve 14 are opened, the styrene feeding unit 5 and the ethylbenzene feeding unit 6 enter the second filter 3 through the pipeline where the eighth valve 18 is arranged, and then enter the reactor 4 through the pipeline where the fourth valve 14 is arranged after filtration, and then react in the reactor 4.

[0093] The above two modes can be selected when producing PS.

[0094] In the ABS device provided by the embodiment of the utility model, one or more main feeding flow meters 10 are arranged on the connecting pipeline of the first filter outlet 202 and / or the second filter outlet 302 and the preheater 27. Figure 1 Two main feeding flow meters 10 are arranged on the connecting pipeline of the first filter outlet 202 and / or the second filter outlet 302 and the preheater 27, and the main feeding flow meters 10 are closer to the position of the preheater 27 than the third valve 13 and the fourth valve 14.

[0095] Further, the tenth valve 20 is arranged between the adjacent main feeding flow meters 10.

[0096] Generally, in order to ensure normal work when the main feeding flow meter 10 fails, the main feeding flow meter bypass 26 can be arranged, the corresponding switch ball valve 21 is closed, and the main feeding flow meter 10 bypasses into the reactor 4. A plurality of valves are arranged on the main feeding flow meter bypass 26, and the valve close to the preheater 27 is defined as the ninth valve 19.

[0097] In the ABS device provided by the embodiment of the utility model, when the first valve 11 to the sixth valve 16 need to be replaced due to failure, the above valves cannot be replaced when producing PS, therefore, Figure 1 The bypass pipeline 7 is further arranged for connecting the styrene feeding unit 5 and the preheater 27. The bypass pipeline 7 is a simple pipeline, which not only shortens the PS production process, simplifies the production operation, prevents production fluctuation caused by improper operation, but also achieves the purpose of replacing the main feeding filter inlet and outlet valve and the connecting valve without stopping the device. Further, the cut-off valve assembly 8 is arranged on the bypass pipeline 7, and the purge valve assembly 9 is arranged on the bypass pipeline 7.

[0098] In the specific embodiment, Figure 1The cut-off valve assembly 8 comprises a first cut-off valve 801 and a second cut-off valve 802, wherein the first cut-off valve 801 is arranged at one end close to the styrene feeding unit 5, and the second cut-off valve 802 is arranged at one end close to the preheater 27.

[0099] In the embodiment, as shown in Figure 1 The ninth valve 19 is arranged between the main feeding flow meter 10 bypass and the reactor 4, and the bypass pipeline 7 communicates with the pipeline where the ninth valve 19 is arranged.

[0100] When any one or more of the first valve 11 to the sixth valve 16 is replaced, the seventh valve 17, the eighth valve 18, the ninth valve 19 and the tenth valve 20 are closed, the first cut-off valve 801 and the second purge valve 902 are opened, the second cut-off valve 802 and the first purge valve 901 are closed, so that the bypass pipeline 7 is filled with the reaction flow, until the reaction flow flows out of the second purge valve 902, indicating that the reaction flow has filled the bypass pipeline, and the air in the bypass pipeline 7 has been purged, at this time, the second purge valve 902 is closed, the second cut-off valve 802 and the ninth valve 19 are opened, and the styrene and ethylbenzene flow will enter the reactor 4 through the preheater 27 along the bypass pipeline 7 to carry out the polymerization reaction. After the reaction is completed, the first cut-off valve 801 and the second cut-off valve 802 are closed, the first purge valve 901 and the second purge valve 902 are opened, nitrogen is introduced into the second purge valve 902, and purging is carried out, and waste liquid is discharged from the first purge valve 901.

[0101] Further, the device further comprises a styrene flow meter 22 and a styrene flow meter regulating valve 23, and the flow of styrene can be controlled and regulated.

[0102] Further, the device further comprises an ethylbenzene flow meter 24 and an ethylbenzene flow meter regulating valve 25, and the flow of ethylbenzene can be controlled and regulated.

[0103] In the embodiment of the body method ABS device provided by the utility model, as shown in Figure 1 The top of the reactor 4 is provided with a vent pipeline 30, and the vent pipeline 30 communicates with the devolatilizer 28. Preferably, the height of the vent pipeline 30 is lower than the height of the top outlet of the reactor 4, so that the pipeline bag type can be eliminated, and the adverse consequences caused by the blockage of the pipeline due to the self-polymerization of the material and the inability to start the vehicle can be prevented.

[0104] Further, as shown in Figure 1The number of the reactors 4 is multiple, each reactor 4 is connected in series, each reactor 4 comprises a reactor inlet and a reactor outlet, the inlet of the first reactor 4 is communicated with the preheater 27, in the adjacent reactors, the outlet of the former reactor 4 is communicated with the inlet of the next reactor 4, and the outlet of the last reactor 4 is communicated with the inlet of the devolatilizer 28.

[0105] In the body method ABS device provided by the embodiment of the utility model, Figure 2 The preheater 27 comprises a preheater material outlet 271, a preheater guide oil inlet 272 and a preheater guide oil outlet 273, and the preheater material outlet 271 is communicated with the reactor 4. A pump body 31 is arranged on the communication pipeline of the preheater guide oil inlet 272 and the preheater guide oil outlet 273, and a cold oil unit 32, a medium-temperature oil heat exchange unit 33 and an overflow oil unit 34 are further arranged, wherein the cold oil unit 32, the medium-temperature oil heat exchange unit 33 and the overflow oil unit 34 are communicated with a converging pipeline 40 through a cold oil pipeline 37, a medium-temperature oil pipeline 38 and an overflow oil pipeline 39 respectively, and the converging pipeline 40 is communicated with the preheater guide oil outlet 273.

[0106] As shown in Figure 2 The pipelines of the preheater material outlet 271, the preheater guide oil inlet 272 and the preheater guide oil outlet 273 are respectively provided with temperature sensors 35, and the cold oil pipeline 37, the medium-temperature oil pipeline 38 and the overflow oil pipeline 39 are respectively provided with flow regulating valves 36. A control unit is further arranged, and the control unit is signal connected with the temperature sensors 35 and the flow regulating valves 36. The control unit is a conventional controller. Those skilled in the art know that the calculation comparison, judgment, output instruction process of the controller can be realized by using the integrated circuit module, programmable logic device, other hardware or installing the corresponding software module in the prior art. For example, the temperature detected by the temperature sensor 35 is transmitted to the control unit, the control unit issues an instruction to adjust the opening degree of the flow regulating valve, and then adjusts the flow of the corresponding cold oil pipeline, medium-temperature oil pipeline and overflow oil pipeline, so as to realize the temperature regulation and control. After the temperature control of the preheater 4, the temperature control of the preheater material side outlet is more stable during the production of PS, so as to ensure the stable temperature control of the material entering the reactor 4, prevent the temperature of the reaction system from rising and falling sharply, ensure the stable temperature control of the entire reaction system, and thus improve the running stability of the entire device.

[0107] In summary, the device of the utility model, first, to ensure normal production and product quality, the main feed filter such as first filter and second filter need to cut out and replace filter paper regularly, if the main feed filter inlet and outlet valve or intercommunication valve occurs internal leakage, it will not be able to cut out and replace filter paper, affect the device production and product quality, if need to replace the above valve, the device can only stop. The present application can replace the main feed filter inlet and outlet valve or intercommunication valve without stopping by adding new PS production pipeline, save cost. In addition, avoid the device to stop, also reduce the VOCs emission, corresponding reduce the influence on the environment. Second, the preheater temperature control can be more accurate, ensure the smooth production of PS, third, can avoid the adverse consequences of emptying pipeline blockage caused by unable to start.

[0108] In summary, the utility model effectively overcomes the various shortcomings in the prior art and has high industrial utilization value.

[0109] The above embodiments only exemplarily illustrate the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A mass polymerization ABS apparatus, the apparatus comprising a main feed pump (1), a first filter (2) comprising a first filter inlet (201) and a first filter outlet (202), a communication line between the main feed pump (1) and the first filter inlet (201) being provided with a first valve (11); characterized in that, The device further comprises a preheater (27), a reactor (4), a devolatilizer (28) and a die discharge (29) connected in sequence, a third valve (13) is arranged on the connecting pipeline between the first filter outlet (202) and the preheater (27); the device further comprises a styrene feeding unit (5) and an ethylbenzene feeding unit (6) connected by a pipeline, a seventh valve (17) is arranged on the connecting pipeline between the styrene feeding unit (5) and the first filter inlet (201); the device further comprises a bypass pipeline (7) for connecting the styrene feeding unit (5) and the preheater (27), a cut-off valve assembly (8) is arranged on the bypass pipeline (7), and a purge valve assembly (9) is further arranged and connected with the bypass pipeline (7).

2. The in-line ABS device of claim 1, wherein, The device further comprises a second filter (3) comprising a second filter inlet (301) and a second filter outlet (302), a second valve (12) is arranged on the connecting pipeline between the main feeding pump (1) and the second filter inlet (301), and a fourth valve (14) is arranged on the connecting pipeline between the second filter outlet (302) and the preheater (27); And / or, an eighth valve (18) is arranged on the connecting pipeline between the styrene feeding unit (5) and the second filter inlet (301).

3. The in-line ABS device of claim 2, wherein, A fifth valve (15) is arranged on the connecting pipeline between the second filter outlet (302) and the first filter inlet (201), and a sixth valve (16) is arranged on the connecting pipeline between the first filter outlet (202) and the second filter inlet (301); And / or, one or more main feeding flow meters (10) are further arranged on the connecting pipeline between the first filter outlet (202) and / or the second filter outlet (302) and the preheater (27).

4. The in-line ABS device of claim 3, wherein, A switch ball valve (21) is arranged between adjacent main feeding flow meters (10); And / or, a tenth valve (20) is arranged between the main feeding flow meter (10) and the preheater (27); And / or, a main feeding flow meter bypass (26) is further arranged, a ninth valve (19) is arranged between the main feeding flow meter bypass (26) and the preheater (27), and the bypass pipeline (7) is connected with the pipeline where the ninth valve (19) is arranged.

5. The in-line ABS device of claim 1 wherein, The cut-off valve assembly (8) comprises a first cut-off valve (801) and a second cut-off valve (802), wherein the first cut-off valve (801) is arranged at one end close to the styrene feeding unit (5), and the second cut-off valve (802) is arranged at one end close to the preheater (27).

6. The in-line ABS device of claim 5, wherein, The purge valve assembly (9) comprises a first purge valve (901) and a second purge valve (902), the first purge valve (901) and the second purge valve (902) are respectively arranged between the first cut-off valve (801) and the second cut-off valve (802), the first purge valve (901) is close to the first cut-off valve (801), and the second purge valve (902) is close to the second cut-off valve (802).

7. The in-line ABS device of claim 1 wherein, The device further comprises a styrene flow meter (22) and a styrene flow meter regulating valve (23). And / or, the device further comprises an ethylbenzene flow meter (24) and an ethylbenzene flow meter regulating valve (25).

8. The in-line ABS device of claim 1 wherein, The number of the reactors (4) is multiple, each reactor (4) is sequentially connected in series, the feed inlet of the first reactor (4) is communicated with the preheater (27), and the discharge outlet of the last reactor (4) is communicated with the feed inlet of the devolatilizer (28). And / or, the top of the reactor (4) is provided with a venting pipeline (30), the venting pipeline (30) is communicated with the devolatilizer (28), and the height of the venting pipeline (30) is lower than that of the top outlet of the reactor (4).

9. The in-line ABS device of claim 1 wherein, The preheater (27) comprises a preheater material outlet (271), a preheater guide oil inlet (272) and a preheater guide oil outlet (273), the preheater material outlet (271) is communicated with the reactor (4), a pump body (31) is arranged on the communication pipeline of the preheater guide oil inlet (272) and the preheater guide oil outlet (273), and the preheater (27) further comprises a cold oil unit (32), a medium-temperature oil heat exchange unit (33) and an overflow oil unit (34), the cold oil unit (32), the medium-temperature oil heat exchange unit (33) and the overflow oil unit (34) are respectively communicated with a converging pipeline (40) through a cold oil pipeline (37), a medium-temperature oil pipeline (38) and an overflow oil pipeline (39), and the converging pipeline (40) is communicated with the preheater guide oil outlet (273).

10. The bulk process ABS apparatus of claim 9 wherein, Temperature sensors (35) are respectively arranged on the pipelines of the preheater material outlet (271), the preheater guide oil inlet (272) and the preheater guide oil outlet (273), flow regulating valves (36) are respectively arranged on the cold oil pipeline (37), the medium-temperature oil pipeline (38) and the overflow oil pipeline (39), and a control unit is further included, which is signal connected with the temperature sensors (35) and the flow regulating valves (36).

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