Ethyl maltol mother liquor continuous extraction device

Abstract

The utility model discloses an ethyl maltol mother liquor continuous extraction device which comprises a mother liquor tank, an outlet of the mother liquor tank is connected with a continuous extraction machine through a first conveying assembly, the continuous extraction machine is connected with a waste discharge assembly, and an inlet of the continuous extraction machine is connected with an extraction agent tank through a second conveying assembly. The extraction agent tank is connected with a vacuum assembly, and an outlet of the continuous extraction machine is connected with a first pipeline. According to the utility model, a process of matching equipment such as the continuous extraction machine and the low-temperature evaporator is adopted, so that the problems that the extraction effect of a traditional extraction tower is difficult to control and an extraction kettle cannot realize continuous production are solved, the automatic continuous extraction operation of the ethyl maltol mother liquor at normal temperature is realized, and the production efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical production equipment technical field especially relates to a kind of ethyl maltol mother liquor continuous extraction device. BACKGROUND

[0002] Ethyl maltol mother liquor extraction in prior art, usually using extraction tower or extraction kettle to operate. However, extraction tower has the problem that extraction effect is difficult to accurately control in extraction process, and it occupies larger space, requires higher site; while extraction kettle faces the dilemma that continuous production is difficult to realize, meanwhile mother liquor and extractant are prone to insufficient mixing, thereby affecting the final extraction effect. Therefore, it is necessary to develop a kind of device and process which can overcome the above-mentioned drawbacks, realize efficient, continuous and stable extraction, to meet the actual needs of ethyl maltol mother liquor extraction production. SUMMARY

[0003] The utility model aims at solving the shortcomings in prior art, and provides an ethyl maltol mother liquor continuous extraction device.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a kind of ethyl maltol mother liquor continuous extraction device, including mother liquor tank, the outlet of the mother liquor tank is connected with continuous extraction machine by first conveying component, the continuous extraction machine is connected with waste discharge component, the inlet of the continuous extraction machine is connected with extractant tank by second conveying component, the extractant tank is connected with vacuum component, the outlet of the continuous extraction machine is connected with first pipeline, the end of the first pipeline is connected with extraction phase tank, the extraction phase tank is connected with low-temperature evaporator by third conveying component, the low-temperature evaporator is provided with heating coil, the low-temperature evaporator is connected with heat exchanger by second pipeline, one outlet of the heat exchanger is connected with third pipeline, the end of the third pipeline is fixedly connected with extractant tank, the other outlet of the heat exchanger is fixedly connected with fourth pipeline, the end of the fourth pipeline is fixedly connected with compressor, the outlet of the compressor is fixedly connected with the inlet of heating coil, the outlet of heating coil is fixedly connected with fifth pipeline, the end of the fifth pipeline is fixedly connected with heat exchanger.

[0005] As a further description of the above technical solution:

[0006] The first conveying component includes first metering pump, the inlet of the first metering pump is fixedly connected with sixth pipeline, one end of the sixth pipeline away from the first metering pump is fixedly connected with mother liquor tank, the outlet of the first metering pump is fixedly connected with seventh pipeline, one end of the seventh pipeline away from the first metering pump is fixedly connected with continuous extraction machine.

[0007] As a further description of the above technical solution:

[0008] The waste discharge assembly comprises a waste water tank, an eighth pipeline is fixedly connected to an inlet of the waste water tank, an end of the eighth pipeline away from the waste water tank is fixedly connected to a waste discharge port of the continuous extractor, a first waste discharge pipeline is fixedly connected to an outlet of the waste water tank, and a second waste discharge pipeline is connected to the mother liquor tank.

[0009] As a further description of the above technical solution:

[0010] The second conveying assembly comprises a second metering pump, a ninth pipeline is fixedly connected to an inlet of the second metering pump, an end of the ninth pipeline away from the second metering pump is fixedly connected to an extractant tank, a tenth pipeline is fixedly connected to an outlet of the second metering pump, and an end of the tenth pipeline away from the second metering pump is fixedly connected to the continuous extractor.

[0011] As a further description of the above technical solution:

[0012] The vacuum assembly comprises a vacuum pump, an eleventh pipeline is fixedly connected to an inlet of the vacuum pump, a vacuum buffer tank is fixedly connected to an end of the eleventh pipeline away from the vacuum pump, a twelfth pipeline is connected to the vacuum buffer tank, and an end of the twelfth pipeline is fixedly connected to the extractant tank.

[0013] As a further description of the above technical solution:

[0014] The third conveying assembly comprises a third metering pump, a thirteenth pipeline is fixedly connected to an inlet of the third metering pump, an end of the thirteenth pipeline away from the third metering pump is fixedly connected to an extractant phase tank, a fourteenth pipeline is fixedly connected to an outlet of the third metering pump, and an end of the fourteenth pipeline away from the third metering pump is fixedly connected to a low-temperature evaporator.

[0015] As a further description of the above technical solution:

[0016] The first pressure sensor and the first temperature sensor are located close to the heating coil, and the second temperature sensor and the second pressure sensor are located close to the heat exchanger.

[0017] The utility model has the advantages of the following beneficial effects:

[0018] 1. Compared with the prior art, the ethyl maltol mother liquor continuous extraction device adopts a process of cooperating a continuous extractor with a low-temperature evaporator and other equipment, overcomes the problems of difficult control of the extraction effect of a traditional extraction tower and non-continuous production of an extraction kettle, realizes automatic continuous extraction operation of ethyl maltol mother liquor water at room temperature, and greatly improves production efficiency.

[0019] 2、Compared with the prior art, the ethyl maltol mother liquor continuous extraction device utilizes the working principle of a heating compressor, realizes comprehensive utilization of energy, fully utilizes the refrigeration and heating cycle advantages in the process of heating the raw liquor to promote the volatilization of the extractant and condensing and recovering the extractant, achieves the energy saving effect, the whole device and process are automatically controlled, manual operation cost and failure rate are reduced, and good application prospect and economic benefits are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A whole schematic view of an ethyl maltol mother liquor continuous extraction device is provided in the utility model.

[0021] LEGEND:

[0022] 1, mother liquor tank; 2, extractant tank; 21, first metering pump; 3, continuous extraction machine; 31, second metering pump; 4, waste water tank; 5, extraction phase tank; 51, third metering pump; 6, low-temperature evaporator; 61, heating coil; 62, first pressure sensor; 63, first temperature sensor; 7, vacuum buffer tank; 8, vacuum pump; 9, heat exchanger; 91, second temperature sensor; 92, second pressure sensor; 93, expansion valve; 10, compressor. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] REFERENCE Figure 1 The utility model provides a kind of ethyl maltol mother liquor continuous extraction device: including mother liquor tank 1, the outlet of mother liquor tank 1 is connected with continuous extraction machine 3 by first conveying component, and first conveying component includes first metering pump 21, the inlet of first metering pump 21 is fixedly connected with sixth pipeline, the end of sixth pipeline away from first metering pump 21 is fixedly connected with mother liquor tank 1, the outlet of first metering pump 21 is fixedly connected with seventh pipeline, and the end of seventh pipeline away from first metering pump 21 is fixedly connected with continuous extraction machine 3;

[0025] Continuous extraction machine 3 is connected with waste discharge component, and waste discharge component includes waste water tank 4, the inlet of waste water tank 4 is fixedly connected with eighth pipeline, the end of eighth pipeline away from waste water tank 4 is fixedly connected with the waste discharge port of continuous extraction machine 3, and the outlet of waste water tank 4 is fixedly connected with first waste discharge pipe, and second waste discharge pipe is connected on mother liquor tank 1;

[0026] The inlet of the continuous extractor 3 is connected with the extractant tank 2 through a second conveying assembly, the second conveying assembly comprising a second metering pump 31, the inlet of the second metering pump 31 being fixedly connected with a ninth pipeline, the end of the ninth pipeline away from the second metering pump 31 being fixedly connected with the extractant tank 2, the outlet of the second metering pump 31 being fixedly connected with a tenth pipeline, the end of the tenth pipeline away from the second metering pump 31 being fixedly connected with the continuous extractor 3;

[0027] The extractant tank 2 is connected with a vacuum assembly, the vacuum assembly comprising a vacuum pump 8, the inlet of the vacuum pump 8 being fixedly connected with an eleventh pipeline, the end of the eleventh pipeline away from the vacuum pump 8 being fixedly connected with a vacuum buffer tank 7, the vacuum buffer tank 7 being connected with a twelfth pipeline, the end of the twelfth pipeline being fixedly connected with the extractant tank 2;

[0028] The outlet of the continuous extractor 3 is connected with a first pipeline, the end of the first pipeline being connected with an extract phase tank 5, the extract phase tank 5 being connected with a low-temperature evaporator 6 through a third conveying assembly, the third conveying assembly comprising a third metering pump 51, the inlet of the third metering pump 51 being fixedly connected with a thirteenth pipeline, the end of the thirteenth pipeline away from the third metering pump 51 being fixedly connected with the extract phase tank 5, the outlet of the third metering pump 51 being fixedly connected with a fourteenth pipeline, the end of the fourteenth pipeline away from the third metering pump 51 being fixedly connected with the low-temperature evaporator 6;

[0029] The low-temperature evaporator 6 is provided with a heating coil 61, the low-temperature evaporator 6 being connected with a heat exchanger 9 through a second pipeline, one outlet of the heat exchanger 9 being connected with a third pipeline, the end of the third pipeline being fixedly connected with the extractant tank 2, the other outlet of the heat exchanger 9 being fixedly connected with a fourth pipeline, the end of the fourth pipeline being fixedly connected with a compressor 10, the outlet of the compressor 10 being fixedly connected with the inlet of the heating coil 61, the outlet of the heating coil 61 being fixedly connected with a fifth pipeline, the end of the fifth pipeline being fixedly connected with the heat exchanger 9, the fifth pipeline being provided with a first pressure sensor 62, a first temperature sensor 63, a second temperature sensor 91, a second pressure sensor 92 and an expansion valve 93, the first pressure sensor 62 and the first temperature sensor 63 being located close to the heating coil 61, the second temperature sensor 91 and the second pressure sensor 92 being located close to the heat exchanger 9, the low-temperature evaporator 6 being provided with a liquid level controller.

[0030] Working principle:

[0031] First, open the first metering pump 21, the ethyl maltol mother liquor in the mother liquor tank 1 is continuously transported to the continuous extractor 3 according to the set flow rate; at the same time, the second metering pump 31 is started, and the extractant in the extractant tank 2 also continuously enters the continuous extractor 3 according to the specified flow rate ratio (3:1~5:1), and the mother liquor and the extractant are fully mixed in the continuous extractor 3 to perform extraction operation. After the extraction is completed, the light liquid generated flows into the waste water tank 4 through the eighth pipeline of the light liquid outlet of the continuous extractor 3 to collect, and the subsequent waste water is transferred to the sewage treatment; and the heavy liquid enters the extraction phase tank 5 through the first pipeline of the heavy liquid outlet and is temporarily stored.

[0032] Then, the low-temperature evaporator 6 is extracted to a vacuum state through an external vacuum system, and the internal vacuum is controlled to be in the interval of-0.085MPa~-0.095MPa, then the heavy liquid in the extraction phase tank 5 enters the low-temperature evaporator 6 by using the third metering pump 51, and when the heavy liquid reaches the liquid level set by the liquid level controller of the low-temperature evaporator 6, the compressor 10 is automatically started and operated. The high-temperature and high-pressure refrigerant gas discharged by the compressor 10 starts to heat the heavy liquid in the low-temperature evaporator 6, so that the heavy liquid boils at a set temperature range, and the extractant in the heavy liquid is volatilized into a vapor state. The heavy liquid temperature control is determined by the vacuum in the low-temperature evaporator 6, and when the pressure is stable, the original liquid temperature remains unchanged; the heavy liquid feeding speed is controlled by the liquid level in the low-temperature evaporator 6.

[0033] The volatilized extractant vapor enters the heat exchanger 9, at this time, part of the refrigerant after pressure reduction by the expansion valve 93 enters the heat exchanger 9 to cool the vapor, and the second temperature sensor 91 at the outlet of the heat exchanger 9 monitors the temperature of the condensed extractant in real time to ensure that it is smoothly converted into a liquid state and flows into the extractant tank 2. After the extractant tank 2 automatically supplements the part reduced in the recovery process, the extractant reenters the continuous extractor 3 through the second metering pump 31 for recycling. After completing the condensation task, the refrigerant returns to the compressor 10, and after heating by the compressor 10, it continues to heat the heavy liquid in the low-temperature evaporator 6, so as to realize the circulation of the whole process, and continuously extract the ethyl maltol mother liquor and recycle the extractant. The remaining liquid in the low-temperature evaporator 6 after the evaporation of the extractant enters the ethyl maltol recovery process, further separates from the extractant, and completes the product recovery operation.

[0034] Finally, it should be pointed out that the above description is only a preferred embodiment of the present application and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A continuous extraction apparatus for ethyl maltol mother liquor, comprising a mother liquor tank (1), characterized in that: The outlet of the mother liquor tank (1) is connected to a continuous extractor (3) via a first conveying assembly. A waste discharge assembly is connected to the continuous extractor (3). The inlet of the continuous extractor (3) is connected to an extractant tank (2) via a second conveying assembly. A vacuum assembly is connected to the extractant tank (2). The outlet of the continuous extractor (3) is connected to a first pipe. The end of the first pipe is connected to an extraction phase tank (5). The extraction phase tank (5) is connected to a low-temperature evaporator (6) via a third conveying assembly. A heating coil is installed on the low-temperature evaporator (6). 61), the low-temperature evaporator (6) is connected to a heat exchanger (9) through a second pipe. One outlet of the heat exchanger (9) is connected to a third pipe. The end of the third pipe is fixedly connected to the extractant tank (2). The other outlet of the heat exchanger (9) is fixedly connected to a fourth pipe. The end of the fourth pipe is fixedly connected to a compressor (10). The outlet of the compressor (10) is fixedly connected to the inlet of the heating coil (61). The outlet of the heating coil (61) is fixedly connected to a fifth pipe. The end of the fifth pipe is fixedly connected to the heat exchanger (9).

2. The ethyl maltol mother liquor continuous extraction device according to claim 1, characterized in that: The first delivery assembly includes a first metering pump (21), the inlet of the first metering pump (21) is fixedly connected to a sixth pipe, the end of the sixth pipe away from the first metering pump (21) is fixedly connected to the mother liquor tank (1), the outlet of the first metering pump (21) is fixedly connected to a seventh pipe, the end of the seventh pipe away from the first metering pump (21) is fixedly connected to the continuous extractor (3).

3. The ethyl maltol mother liquor continuous extraction device according to claim 1, characterized in that: The waste discharge assembly includes a wastewater tank (4), an eighth pipe is fixedly connected to the inlet of the wastewater tank (4), the end of the eighth pipe away from the wastewater tank (4) is fixedly connected to the waste discharge port of the continuous extractor (3), a first waste discharge pipe is fixedly connected to the outlet of the wastewater tank (4), and a second waste discharge pipe is connected to the mother liquor tank (1).

4. The ethyl maltol mother liquor continuous extraction device according to claim 1, characterized in that: The second delivery assembly includes a second metering pump (31), the inlet of which is fixedly connected to a ninth pipe, the end of which away from the second metering pump (31) is fixedly connected to an extractant tank (2), and the outlet of the second metering pump (31) is fixedly connected to a tenth pipe, the end of which away from the second metering pump (31) is fixedly connected to a continuous extractor (3).

5. The ethyl maltol mother liquor continuous extraction device according to claim 1, characterized in that: The vacuum assembly includes a vacuum pump (8), the inlet of which is fixedly connected to an eleventh pipe, and the end of the eleventh pipe away from the vacuum pump (8) is fixedly connected to a vacuum buffer tank (7). The vacuum buffer tank (7) is connected to a twelfth pipe, and the end of the twelfth pipe is fixedly connected to an extractant tank (2).

6. The ethyl maltol mother liquor continuous extraction device according to claim 1, characterized in that: The third delivery assembly includes a third metering pump (51), the inlet of which is fixedly connected to a thirteenth pipe, the end of which away from the third metering pump (51) is fixedly connected to an extraction phase tank (5), and the outlet of the third metering pump (51) is fixedly connected to a fourteenth pipe, the end of which away from the third metering pump (51) is fixedly connected to a low-temperature evaporator (6).

7. The ethyl maltol mother liquor continuous extraction device according to claim 1, characterized in that: The fifth pipe is equipped with a first pressure sensor (62), a first temperature sensor (63), a second temperature sensor (91), a second pressure sensor (92), and an expansion valve (93). The first pressure sensor (62) and the first temperature sensor (63) are located near the heating coil (61), and the second temperature sensor (91) and the second pressure sensor (92) are located near the heat exchanger (9).

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