Bisphenol A tar light component recovery device

Abstract

The bisphenol A tar light component recovery device comprises a preheater, a condenser, a circulating water tank, a circulating water pump, a storage tank, a temperature sensor, a controller, a signal amplifier, a knockout pump, a heat conduction pipe, a circulating water inlet pipe, a circulating water outlet pipe and a heat valve, by means of condensation recovery, residual phenol in bisphenol A tar is fully utilized, the heat conduction pipe is used for heating circulating condensate water through waste heat of the preheater, low-temperature caking of phenol is effectively avoided, the waste heat of the preheater is fully utilized, waste discharge is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of petrochemical industry, in particular to a bisphenol A tar light component recovery device. Background Art

[0002] Bisphenol A tar is a by-product produced in the production process of bisphenol A. In the production process of bisphenol A, phenol and acetone react under the action of an acidic catalyst to form bisphenol A, and bisphenol A tar is a by-product produced at the bottom of the tower. At present, industrial production has developed a method to react bisphenol A tar to form coumarone resin through polymerization reaction. In the process of preparing coumarone resin from bisphenol A tar, the raw materials need to be pre-treated before distillation, and the residual light component phenol is distilled and separated. The separated light components are directly handed over to qualified enterprises for hazardous waste treatment and then discharged. This treatment method causes huge waste of resources, and the treatment method is usually direct discharge after adsorption combustion, which aggravates air pollution and greenhouse effect. In addition, phenol will liquefy when the temperature is lower than 80°C, and partial agglomeration will occur when the temperature is further reduced to below 40°C, causing blockage of the equipment, so there are certain difficulties in recovering this part of the light components. Therefore, the rational utilization of the light components in bisphenol A tar is of great significance to the resource utilization of bisphenol A tar. Utility Model Content

[0003] In order to solve the above problems, the utility model provides the following technical solution: a bisphenol A tar light component recovery device, including a preheater, a condenser, a circulating water tank, a circulating water pump, a storage tank, a temperature sensor, a controller, a signal amplifier, a charging pump, a heat conduction pipe, a circulating water inlet pipe, a circulating water outlet pipe, and a thermal valve; characterized in that: the preheater is connected to the condenser through a pipeline; the condenser is connected to the charging pump through a pipeline; the charging pump is connected to the storage tank through a pipeline; the circulating water tank is connected to the condenser through a circulating water inlet pipe and a circulating water outlet pipe respectively; the circulating water pump and the temperature sensor are respectively installed on the circulating water inlet pipe; the heat conduction pipe connects the preheater and the circulating water tank, and a thermal valve is provided at the evaporation end of the heat conduction pipe; the thermal valve is connected to the controller through a wire; the controller is connected to the signal amplifier through a wire; the signal amplifier is connected to the temperature sensor through a wire.

[0004] The condenser is a tube-in-tube condenser, which is provided with a feed inlet, a discharge outlet, a circulating condensed water inlet and a circulating condensed water outlet.

[0005] The storage tank is a vaulted glass fiber reinforced plastic storage tank.

[0006] Preferably, the preheater is an RV04 volumetric heat exchanger with a preheating temperature of 120°C.

[0007] Preferably, the circulating water tank is a stainless steel water tank.

[0008] Preferably, the heat pipe model is a HRM heat recovery heat pipe.

[0009] Preferably, the circulating water pump model is an NLB centrifugal pump.

[0010] Preferably, the temperature sensor model is SPTH150M temperature detector.

[0011] Preferably, the controller model is MIK-R8000.

[0012] Preferably, the signal amplifier model is CE700A.

[0013] Preferably, the feed pump model is IMC50-32.

[0014] Preferably, the thermal valve model is D941H-16C.

[0015] Furthermore, the obtained phenol product can be further distilled according to the usage standard.

[0016] The bisphenol A tar raw material is preheated by a preheater, wherein the light component enters the condenser through the light component outlet of the preheater and is liquefied into phenol in the condenser; the phenol enters the storage tank through the discharge port of the condenser via a feed pump to obtain a phenol product.

[0017] When working, the heat pipe can use the waste heat from the preheater to heat the condensed water in the circulating water tank. The temperature sensor detects the temperature of the condensed water at the circulating water inlet pipe. When the condensed water temperature is lower than 40°C, the temperature sensor sends a signal to the controller through the signal amplifier. The controller controls the thermal valve to open, and the heat pipe uses the waste heat to heat the circulating water. When the temperature is higher than 80°C, the temperature sensor sends a signal to the controller through the signal amplifier. The controller controls the thermal valve to close and stops heating the circulating condensed water.

[0018] Compared with the prior art, the utility model has the following beneficial effects: through condensation recovery, the residual phenol in bisphenol A tar is fully utilized, and the circulating condensed water is heated by using the waste heat of the preheater using a heat pipe, which not only effectively avoids the low-temperature agglomeration of phenol, but also makes full use of the waste heat of the preheater, reduces waste emissions, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a bisphenol A tar light component recovery device;

[0020] In the figure, 1. preheater; 2. heat transfer pipe; 3. heat valve; 4. circulating water tank; 5. storage tank; 6. condenser; 7. feed pump; 8. circulating water inlet pipe; 9. circulating water outlet pipe; 10. circulating water pump; 11. controller; 12. signal amplifier; 13. temperature sensor. DETAILED DESCRIPTION

[0021] All components in the present invention are universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods. At the same time, standard parts used in the present application documents can be purchased from the market, and each component in the present application document can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment adopt conventional models in the prior art. The control method of the present invention is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power is also common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0022] The utility model provides the following technical scheme: a bisphenol A tar light component recovery device, comprising a preheater, a condenser, a circulating water tank, a circulating water pump, a storage tank, a temperature sensor, a controller, a signal amplifier, a charging pump, a heat conduction pipe, a circulating water inlet pipe, a circulating water outlet pipe, and a thermal valve; the characteristics are: the preheater is connected to the condenser through a pipeline; the condenser is connected to the charging pump through a pipeline; the charging pump is connected to the storage tank through a pipeline; the circulating water tank is connected to the condenser through a circulating water inlet pipe and a circulating water outlet pipe respectively; the circulating water pump and the temperature sensor are respectively installed on the circulating water inlet pipe; the heat conduction pipe connects the preheater and the circulating water tank, and a thermal valve is provided at the evaporation end of the heat conduction pipe; the thermal valve is connected to the controller through a wire; the controller is connected to the signal amplifier through a wire; the signal amplifier is connected to the temperature sensor through a wire. Example

[0023] Bisphenol A tar raw material enters the preheater through the feed port, the preheating temperature is 120℃, and the light component phenol in the raw material evaporates and enters the condenser through the upper discharge port via the pipeline. When the condenser temperature is lower than 40℃, the temperature probe sends a signal to the controller through the signal amplifier, and the controller controls the hot valve to open. The heat pipe uses the waste heat of the preheater to heat the circulating water. The circulating water enters the condenser through the condensate water inlet pipe, liquefies the phenol gas in the condenser, and enters the storage tank through the feed pump through the pipeline for storage; when the condensate temperature is higher than 80℃, the temperature probe sends a signal to the controller through the signal amplifier, and the controller controls the hot valve to close and stop heating the condensate.

Claims

1. A bisphenol A tar light component recovery device, comprising a preheater, a condenser, a circulating water tank, a circulating water pump, a storage tank, a temperature sensor, a controller, a signal amplifier, a feed pump, a heat pipe, a circulating water inlet pipe, a circulating water outlet pipe, and a thermal valve; characterized in that: The preheater is connected to the condenser through a pipeline; the condenser is connected to the charging pump through a pipeline; the charging pump is connected to the storage tank through a pipeline; the circulating water tank is connected to the condenser through a circulating water inlet pipe and a circulating water outlet pipe respectively; the circulating water pump and the temperature sensor are respectively installed on the circulating water inlet pipe; the heat conduction pipe connects the preheater and the circulating water tank, and a thermal valve is provided at the evaporation end of the heat conduction pipe; the thermal valve is connected to the controller through a wire; the controller is connected to a signal amplifier through a wire; the signal amplifier is connected to the temperature sensor through a wire.

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