Anion reaction system of bisphenol A device

Abstract

The utility model discloses an anion reaction system of a bisphenol A device, which comprises a first safety valve discharge buffer tank, a first reactor discharge tank, a first feed heater, a first anion reactor, a catalyst modulation mixer, a third anion reactor and a first discharge filter, a first outlet pipeline of the first anion reactor is connected to an inlet of a first reactor discharge tank; a second outlet pipeline of the first anion reactor is connected to an inlet of the first discharging filter; a first outlet pipeline of the first feeding heater is connected to an inlet of the first anion reactor; and a first inlet pipeline of the first safety valve discharge buffer tank is connected to an outlet of the first anion reactor. When the adsorbent of the anion reactor of the device is inactivated, the device can be directly switched to operate on the third anion reactor without stopping, so that the production of the device is not influenced by the deactivation of the adsorbent, and the stopping of the device due to the replacement of a catalyst is avoided.

Description

Technical Field

[0001] The utility model mainly relates to an anion reaction system of a bisphenol A device. Background Art

[0002] The bisphenol A unit uses the Japanese Mitsubishi process. Because the reaction catalyst is strongly acidic, the sulfonic acid contained in the catalyst will fall into the system during cumulative operation. The higher acidity will decompose bisphenol A, resulting in the purity failing to reach the required value. Therefore, the acid in the mother liquor is adsorbed by a weakly alkaline anion adsorbent to control the pH value. The process package design is single, and whenever the anion reactor adsorbent is deactivated, it needs to be stopped and replaced, which takes a long time.

[0003] The deactivation of the adsorbent in the anion reactor requires the device to be shut down, the anion reactor must be cut out, the reactor resin must be cleaned with desalted water, unloaded, and loaded with new adsorbent. It can only be put into use after being washed with desalted water and phenol. The entire process requires shutdown for about 15 days, which affects the overall production efficiency. Utility Model Content

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: a bisphenol A device anion reaction system, comprising: a first safety valve discharge buffer tank, a first reactor discharge tank, a first feed heater, a first anion reactor, a catalyst modulation mixer, a third anion reactor and a first discharge filter, wherein the first outlet pipeline of the first anion reactor is connected to the inlet of the first reactor discharge tank; the second outlet pipeline of the first anion reactor is connected to the inlet of the first discharge filter; the first outlet pipeline of the first feed heater is connected to the inlet of the first anion reactor; the first outlet pipeline of the catalyst modulation mixer is connected to the first outlet pipeline of the first feed heater; the first inlet pipeline of the first safety valve discharge buffer tank is connected to the outlet of the first anion reactor; the first outlet pipeline of the third anion reactor is connected to the inlet of the first reactor discharge tank; the second outlet pipeline of the third anion reactor is connected to the inlet of the first discharge filter; the second outlet pipeline of the catalyst modulation mixer is connected to the inlet of the third anion reactor; the second outlet pipeline of the first feed heater is connected to the inlet of the third anion reactor; the second inlet pipeline of the first safety valve discharge buffer tank is connected to the outlet of the third anion reactor; a crossover line is arranged between the second outlet pipeline of the catalyst modulation mixer and the second outlet pipeline of the third anion reactor.

[0005] Furthermore, a first pressure gauge, a first temperature gauge, a first inlet valve and a second inlet valve are arranged on the second outlet pipeline of the first feed heater.

[0006] Furthermore, a third pressure gauge, a third temperature gauge and a third inlet valve are arranged on the second outlet pipeline of the catalyst modulation mixer.

[0007] Furthermore, a safety valve 1 is arranged on the first inlet pipeline of the first safety valve discharge buffer tank; a safety valve group, a fourth pressure gauge and a fourth temperature gauge are arranged on the second inlet pipeline of the first safety valve discharge buffer tank.

[0008] Furthermore, a ball valve, an overflow observation mirror, a second pressure gauge and a second temperature gauge are arranged on the first outlet pipeline of the third anion reactor.

[0009] Furthermore, a first outlet valve, a second outlet valve, a fifth pressure gauge and a fifth temperature gauge are arranged on the second outlet pipeline of the third anion reactor.

[0010] Furthermore, a cross-line valve is arranged on the cross-line.

[0011] Furthermore, the fourth outlet pipeline of the third anion reactor is connected to the close packing; and an outlet valve is arranged on the fourth outlet pipeline of the third anion reactor.

[0012] Furthermore, it also includes a second anion reactor, a second safety valve discharge buffer tank, a second reactor discharge tank, a second feed heater and a second discharge filter, wherein the first outlet pipeline of the second feed heater is connected to the inlet of the second anion reactor; the second outlet pipeline of the second feed heater is connected to the inlet of the third anion reactor; the third outlet pipeline of the third anion reactor is connected to the inlet of the second discharge filter; the first outlet pipeline of the second anion reactor is connected to the inlet of the second reactor discharge tank; the second outlet pipeline of the second anion reactor is connected to the inlet of the second discharge filter; the first inlet pipeline of the second safety valve discharge buffer tank is connected to the outlet of the second anion reactor.

[0013] Furthermore, a second safety valve is arranged on the first inlet pipeline of the second safety valve discharge buffer tank; a sixth pressure gauge, a sixth temperature gauge and a third outlet valve are arranged on the third outlet pipeline of the third anion reactor; and a fourth inlet valve is arranged on the second outlet pipeline of the second feed heater.

[0014] Beneficial effect: Whenever the adsorbent in the anion reactor of the device is deactivated, the utility model does not need to stop the device and can directly switch to the third anion reactor for operation. The production of the device is not affected by the deactivation of the adsorbent, avoiding the shutdown of the device due to catalyst replacement, thereby improving the production efficiency of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the anion reaction system of the bisphenol A device of Example 1;

[0016] Figure 2This is a schematic diagram of the anion reaction system of the bisphenol A device of Example 2;

[0017] In the figure: 1, the first anion reactor, 2, the second anion reactor, 3, the third anion reactor, 11, the first feed heater, 12, the catalyst modulation mixer, 13, the first safety valve discharge buffer tank, 14, the first reactor discharge tank, 15, the first discharge filter, 21, the second feed heater, 23, the second safety valve discharge buffer tank, 24, the second reactor discharge tank, 25, the second discharge filter, 26, close arrangement, P1, the first pressure gauge, T1, the first temperature gauge, P2, the second pressure gauge, T1, the second temperature gauge, P3, the third pressure gauge, T3, the third temperature gauge, P4, the fourth pressure gauge, T4, the fourth temperature gauge, P5, the fifth pressure gauge, T5, the fifth temperature gauge Table, P6, the sixth pressure gauge, T6, the sixth temperature gauge, G1, the overflow observation mirror, 3A1, the first inlet valve, 3A2, the second inlet valve, 3A3, the third inlet valve, 3A4, the fourth inlet valve, 3B1, the first outlet valve, 3B2, the second outlet valve, 3B3, the third outlet valve, 3B4, the ball valve, 1C1, the safety valve one, 3C3, the safety valve group, 2C2, the safety valve two, 3D1, the cross-line valve, 111, the first outlet pipeline of the first feed heater, 112, the second outlet pipeline of the first feed heater, 121, the first outlet pipeline of the catalyst modulation mixer, 122, the second outlet pipeline of the catalyst modulation mixer, 141, the first outlet pipeline of the first anion reactor, 152, the second outlet pipeline of the first anion reactor, 311, the first outlet pipeline of the third anion reactor, 312, the second outlet pipeline of the third anion reactor, 313, the third outlet pipeline of the third anion reactor, 314, the fourth outlet pipeline of the third anion reactor, 315, the cross-line, 131, the first inlet pipeline of the first safety valve discharge buffer tank, 132, the second inlet pipeline of the first safety valve discharge buffer tank, 211, the first outlet pipeline of the second feed heater, 212, the second outlet pipeline of the second feed heater, 241, the first outlet pipeline of the second anion reactor, 252, the second outlet pipeline of the second anion reactor, 231, the first inlet pipeline of the second safety valve discharge buffer tank. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Example 1

[0020] Reference Figure 1As shown, a bisphenol A device anion reaction system comprises: a first safety valve discharge buffer tank 13, a first reactor discharge tank 14, a first feed heater 11, a first anion reactor 1, a catalyst modulation mixer 12, a third anion reactor 3 and a first discharge filter 15, wherein a first outlet pipeline 141 of the first anion reactor is connected to an inlet of the first reactor discharge tank 14; a second outlet pipeline 152 of the first anion reactor is connected to an inlet of the first discharge filter 15; a first outlet pipeline 111 of the first feed heater is connected to an inlet of the first anion reactor 1; a first outlet pipeline 121 of the catalyst modulation mixer is connected to a first outlet pipeline 111 of the first feed heater; and a first safety valve discharge buffer tank 13, a first reactor discharge tank 14, a first feed heater 11, a first anion reactor 1, a catalyst modulation mixer 12, a third anion reactor 3 and a first discharge filter 15, wherein a first outlet pipeline 141 of the first anion reactor is connected to an inlet of the first reactor discharge tank 14; a second outlet pipeline 152 of the first anion reactor is connected to an inlet of the first discharge filter 15; a first outlet pipeline 111 of the first feed heater is connected to an inlet of the first anion reactor 1; a first outlet pipeline 121 of the catalyst modulation mixer is connected to a first outlet pipeline 111 of the first feed heater; The first inlet pipeline 131 of the discharge buffer tank is connected to the outlet of the first anion reactor 1; the first outlet pipeline 311 of the third anion reactor is connected to the inlet of the first reactor discharge tank 14; the second outlet pipeline 312 of the third anion reactor is connected to the inlet of the first discharge filter 15; the second outlet pipeline 122 of the catalyst modulation mixer is connected to the inlet of the third anion reactor 3; the second outlet pipeline 112 of the first feed heater is connected to the inlet of the third anion reactor 3; the second inlet pipeline 132 of the first safety valve discharge buffer tank is connected to the outlet of the third anion reactor 3; a cross-line is set between the second outlet pipeline 152 of the catalyst modulation mixer and the second outlet pipeline 312 of the third anion reactor; the function of the reactor discharge tank is to store excess mother liquor due to unbalanced liquid level in the device under abnormal operating conditions, which can be continuously returned to the system for use under normal operating conditions.

[0021] Furthermore, a first pressure gauge P1, a first temperature gauge T1, a first inlet valve 3A1 and a second inlet valve 3A2 are provided on the second outlet pipeline 112 of the first feed heater.

[0022] Furthermore, a third pressure gauge P3, a third temperature gauge T3 and a third inlet valve 3A3 are provided on the second outlet pipeline 122 of the catalyst modulation mixer.

[0023] Furthermore, a safety valve 1C1 is arranged on the first inlet pipeline 131 of the first safety valve discharge buffer tank; a safety valve group 3C3, a fourth pressure gauge P4 and a fourth temperature gauge T4 are arranged on the second inlet pipeline 132 of the first safety valve discharge buffer tank; when the reaction in the anion reactor is too large, the safety valve 1, the safety valve group and the safety valve 2 are opened and released into the safety valve discharge buffer tank; the function of the safety valve discharge buffer tank is to collect the system mother liquid generated by the safety valve tripping due to pressure build-up or other abnormal conditions.

[0024] Furthermore, a ball valve 3B4, an overflow observation mirror G1, a second pressure gauge P2 and a second temperature gauge T2 are arranged on the first outlet pipeline 311 of the third anion reactor; the overflow observation mirror G1 is used to observe the overflow situation.

[0025] Furthermore, a first outlet valve 3B1, a second outlet valve 3B2, a fifth pressure gauge P5 and a fifth temperature gauge T5 are provided on the second outlet pipeline 312 of the third anion reactor.

[0026] Furthermore, a cross-line valve 3D1 is provided on the cross-line 315 .

[0027] Furthermore, the fourth outlet pipeline 314 of the third anion reactor is connected to the close packing 26 ; and an outlet valve is disposed on the fourth outlet pipeline 314 of the third anion reactor.

[0028] Example 2

[0029] See attached Figure 2 As shown, the technical scheme described in Example 2 is basically the same as that described in Example 1, and the difference lies in that: it also includes a second anion reactor 2, a second safety valve discharge buffer tank 23, a second reactor discharge tank 24, a second feed heater 21 and a second discharge filter 25, the first outlet pipeline 211 of the second feed heater is connected to the inlet of the second anion reactor 2; the second outlet pipeline 212 of the second feed heater is connected to the inlet of the third anion reactor 3; the third outlet pipeline 313 of the third anion reactor is connected to the inlet of the second discharge filter 25; the first outlet pipeline 241 of the second anion reactor is connected to the inlet of the second reactor discharge tank 24; the second outlet pipeline 252 of the second anion reactor is connected to the inlet of the second discharge filter 25; the first inlet pipeline 231 of the second safety valve discharge buffer tank is connected to the outlet of the second anion reactor 2.

[0030] Furthermore, a safety valve 2C2 is provided on the first inlet pipeline 231 of the second safety valve discharge buffer tank; a sixth pressure gauge P6, a sixth temperature gauge T6 and a third outlet valve 3B3 are provided on the third outlet pipeline 313 of the third anion reactor; and a fourth inlet valve 3A4 is provided on the second outlet pipeline 212 of the second feed heater.

[0031] The utility model sends part of the mother liquor in the original first-stage mother liquor tank to the anion reactor feed heater through the first-stage mother liquor pump, controls the temperature at 70°C, and sends it to the third anion reactor, and sends 3ls (3 kg saturated steam) for heating the equipment body loop pipe; and 3lc (3 kg condensate), the condensate generated by the 3 kg saturated steam heated by the equipment, that is, the acid content in the mother liquor can be controlled by adjusting the flow rate of the anion reactor and the flow rate to the cracking recovery unit, and the mother liquor with the acidic substance removed passes through the anion reactor discharge filter and is supplied to the circulating phenol tank.

[0032] The specific reaction is as follows: the anion reactor removes acidic substances through neutralization reaction, and the reaction is carried out on a fixed bed of anion exchange resin. The neutralization reaction in the anion reactor is XN:RnHm+X'-SO3:H→XN:RnHmHSO3-X', where X, R, and X' are the anion exchange resin structure, alkyl, and cation exchange resin structures, respectively.

Claims

1. A bisphenol A device anion reaction system, characterized in that: include: The first safety valve discharge buffer tank, the first reactor discharge tank, the first feed heater, the first anion reactor, the catalyst modulation mixer, the third anion reactor and the first discharge filter, the first outlet pipeline of the first anion reactor is connected to the inlet of the first reactor discharge tank; the second outlet pipeline of the first anion reactor is connected to the inlet of the first discharge filter; the first outlet pipeline of the first feed heater is connected to the inlet of the first anion reactor; the first outlet pipeline of the catalyst modulation mixer is connected to the first outlet pipeline of the first feed heater; the first inlet pipeline of the first safety valve discharge buffer tank is connected to the outlet of the first anion reactor; the first outlet pipeline of the third anion reactor is connected to the inlet of the first reactor discharge tank; the second outlet pipeline of the third anion reactor is connected to the inlet of the first discharge filter; the second outlet pipeline of the catalyst modulation mixer is connected to the inlet of the third anion reactor; the second outlet pipeline of the first feed heater is connected to the inlet of the third anion reactor; the second inlet pipeline of the first safety valve discharge buffer tank is connected to the outlet of the third anion reactor; a cross line is set between the second outlet pipeline of the catalyst modulation mixer and the second outlet pipeline of the third anion reactor.

2. The anion reaction system of a bisphenol A device according to claim 1, characterized in that: A first pressure gauge, a first temperature gauge, a first inlet valve and a second inlet valve are arranged on the second outlet pipeline of the first feed heater.

3. The anion reaction system of a bisphenol A device according to claim 1, characterized in that: A third pressure gauge, a third temperature gauge and a third inlet valve are arranged on the second outlet pipeline of the catalyst modulation mixer.

4. The anion reaction system of a bisphenol A device according to claim 1, characterized in that: A safety valve 1 is arranged on the first inlet pipeline of the first safety valve discharge buffer tank; a safety valve group, a fourth pressure gauge and a fourth temperature gauge are arranged on the second inlet pipeline of the first safety valve discharge buffer tank.

5. The anion reaction system of a bisphenol A device according to claim 1, characterized in that: A ball valve, an overflow observation mirror, a second pressure gauge and a second temperature gauge are arranged on the first outlet pipeline of the third anion reactor.

6. The anion reaction system of a bisphenol A device according to claim 1, characterized in that: The second outlet pipeline of the third anion reactor is provided with a first outlet valve, a second outlet valve, a fifth pressure gauge and a fifth temperature gauge.

7. The anion reaction system of a bisphenol A device according to claim 1, characterized in that: A cross-line valve is arranged on the cross-line.

8. The anion reaction system of a bisphenol A device according to claim 1, characterized in that: The fourth outlet pipeline of the third anion reactor is connected to the close-packed reactor; an outlet valve is arranged on the fourth outlet pipeline of the third anion reactor.

9. The anion reaction system of a bisphenol A device according to claim 1, characterized in that: It also includes a second anion reactor, a second safety valve discharge buffer tank, a second reactor discharge tank, a second feed heater and a second discharge filter, wherein the first outlet pipeline of the second feed heater is connected to the inlet of the second anion reactor; the second outlet pipeline of the second feed heater is connected to the inlet of the third anion reactor; the third outlet pipeline of the third anion reactor is connected to the inlet of the second discharge filter; the first outlet pipeline of the second anion reactor is connected to the inlet of the second reactor discharge tank; the second outlet pipeline of the second anion reactor is connected to the inlet of the second discharge filter; the first inlet pipeline of the second safety valve discharge buffer tank is connected to the outlet of the second anion reactor.

10. The anion reaction system of a bisphenol A device according to claim 9, characterized in that: A second safety valve is arranged on the first inlet pipeline of the second safety valve discharge buffer tank; a sixth pressure gauge, a sixth temperature gauge and a third outlet valve are arranged on the third outlet pipeline of the third anion reactor; and a fourth inlet valve is arranged on the second outlet pipeline of the second feed heater.

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