Co-production device for medicinal sodium chloride and industrial salt slurry
By modifying the four-effect vacuum evaporation system, one effect is used for the production of pharmaceutical sodium chloride, and the latter three effects are used for the production of industrial salt slurry. This solves the problems of low equipment utilization and energy waste, and realizes the efficient co-production of pharmaceutical sodium chloride and industrial salt.
Patent Information
- Application Number
- CN202423056611.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Pharmaceutical sodium chloride production equipment has low utilization rate, high equipment depreciation and labor costs, and intermittent production leads to serious energy waste.
The four-effect vacuum evaporation system was modified to produce pharmaceutical sodium chloride in one effect and industrial salt slurry in the third effect. By connecting multiple-effect evaporators in series, the equipment and pipelines are shared, thus avoiding equipment idleness and steam pollution.
This improved equipment utilization, avoided equipment idleness and energy waste, reduced production costs, and enabled the simultaneous production of pharmaceutical sodium chloride and industrial salt.
Smart Images
Figure CN223586581U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of multi-effect evaporation, in particular to a device for jointly producing medicinal sodium chloride and industrial salt slurry. BACKGROUND
[0002] In evaporation production, the yield of secondary steam is large, and the secondary steam contains a large amount of latent heat, so the secondary steam should be recycled and utilized. If the secondary steam is introduced into the heating chamber of another evaporator, as long as the operating pressure and the boiling point of the solution of the latter are lower than those of the original evaporator, the introduced secondary steam can still play a heating role. This operation mode is multi-effect evaporation. The production of medicinal sodium chloride can adopt the mode of multi-effect evaporation to save the consumption of heating steam. However, the market demand for medicinal sodium chloride is low in China, and the number of domestic raw material sodium chloride production enterprises is increasing year by year. The four-effect vacuum evaporation capacity is high, and if it is only used to produce medicinal sodium chloride, the equipment utilization rate is low, the equipment depreciation and labor cost are high, and the intermittent production leads to higher energy waste and higher production cost. CONTENT OF THE UTILITY MODEL
[0003] The utility model provides a device for jointly producing medicinal sodium chloride and industrial salt slurry, which overcomes the shortcomings of the prior art. Through technical transformation of the existing four-effect vacuum evaporation process, the first evaporating tank produces medicinal sodium chloride, and the last three evaporating tanks evaporate and concentrate industrial brine.
[0004] According to the device for jointly producing medicinal sodium chloride and industrial salt slurry, the medicinal sodium chloride production device and the industrial salt slurry production device are connected in series to form a multi-effect evaporator.
[0005] The medicinal sodium chloride production device comprises a first evaporator.
[0006] The industrial salt slurry production device comprises a second evaporator, a third evaporator and a fourth evaporator, and the first evaporator, the second evaporator, the third evaporator and the fourth evaporator are connected in series to form a multi-effect evaporator.
[0007] In one embodiment, the first evaporator comprises a first evaporating tank, a first heating chamber, a first circulating pump, a first condensate water bucket, a first preheater, a first condensate pump and a first salt leg.
[0008] The liquid phase top of the first heating chamber is connected with the first evaporating tank, and the bottom of the first evaporating tank is connected with the liquid phase bottom of the first heating chamber. The medicinal sodium chloride mother liquor circulation is formed by the first circulating pump. The refined salt water pipeline is connected to the medicinal sodium chloride mother liquor circulation through the first preheater.
[0009] The bottom of the first heating chamber is connected with the first condensate water bucket, the first preheater and the first condensate pump in sequence.
[0010] The bottom of the first-effect evaporation tank is provided with a first-effect salt leg, and the first-effect evaporation tank is provided with an outlet for discharging mother liquor.
[0011] In one embodiment, the two-effect evaporator comprises a two-effect evaporation tank, a two-effect heating chamber, a two-effect circulating pump, a two-effect condensate bucket, a two-effect condensate pump and a two-effect salt leg, wherein:
[0012] The gas phase of the two-effect heating chamber is connected to the top of the first-effect evaporation tank, the top of the liquid phase of the two-effect heating chamber is connected to the two-effect evaporation tank, the bottom of the two-effect evaporation tank is connected to the bottom of the liquid phase of the two-effect heating chamber, and a two-effect industrial salt mother liquor circulation is formed by the two-effect circulating pump.
[0013] The bottom of the two-effect condensate bucket is connected to the bottom of the gas phase of the two-effect heating chamber, and the bottom of the two-effect condensate bucket is connected to the medicinal condensate bucket through the two-effect condensate pump. The top of the two-effect condensate bucket is connected to the gas phase of the two-effect heating chamber.
[0014] The bottom of the two-effect evaporation tank is provided with a two-effect salt leg.
[0015] In one embodiment, the three-effect evaporator comprises a three-effect evaporation tank, a three-effect heating chamber, a three-effect circulating pump, a three-effect condensate bucket, a second preheater, and a three-effect salt leg, wherein:
[0016] The gas phase of the three-effect heating chamber is connected to the top of the two-effect evaporation tank, the top of the liquid phase of the three-effect heating chamber is connected to the three-effect evaporation tank, the bottom of the three-effect evaporation tank is connected to the bottom of the liquid phase of the three-effect heating chamber, and a three-effect industrial salt mother liquor circulation is formed by the three-effect circulating pump.
[0017] The top of the three-effect condensate bucket is connected to the top of the two-effect evaporation tank through the second preheater.
[0018] The bottom of the three-effect evaporation tank is provided with a three-effect salt leg.
[0019] In one embodiment, the four-effect evaporator comprises a four-effect evaporation tank, a four-effect heating chamber, a four-effect circulating pump, a four-effect condensate bucket, a four-effect mother liquor concentration discharge pump, a third preheater, a four-effect condensate pump, a four-effect salt leg, a circulating water cooling device and a water ring vacuum pump, wherein:
[0020] The four-effect heating chamber is connected to the top of the three-effect evaporation tank, the top of the liquid phase of the four-effect heating chamber is connected to the four-effect evaporation tank, the bottom of the four-effect evaporation tank is connected to the bottom of the liquid phase of the four-effect heating chamber, and a four-effect industrial salt mother liquor circulation is formed by the four-effect circulating pump. The four-effect industrial salt mother liquor circulation discharges mother liquor through the four-effect mother liquor concentration discharge pump.
[0021] The top of the four-effect condensate bucket is connected to the top of the three-effect evaporation tank through the third preheater, and the bottom is connected to the bottom of the three-effect condensate bucket.
[0022] The four-effect evaporating tank is provided with four-effect salt legs at the bottom, and the top is connected with the atmosphere through a circulating water cooling device and a water ring vacuum pump.
[0023] In one of the embodiments, an industrial condensate water collecting system is further included, which comprises an industrial condensate barrel, a fourth preheater, and a four-effect condensate pump, and the industrial condensate barrel is connected with the four-effect condensate barrel through the fourth preheater and the four-effect condensate pump.
[0024] In one of the embodiments, an industrial refined brine supplying system is further included, which comprises a refined brine barrel, an industrial refined brine feeding pump, and a fourth preheater, and the refined brine barrel is connected with the two-effect evaporating tank through the industrial refined brine feeding pump, the fourth preheater, the third preheater, and the second preheater.
[0025] In one of the embodiments, a salt slurry collecting system is further included, which comprises an industrial salt slurry barrel and an industrial salt slurry pump, and the two-effect salt leg, the three-effect salt leg, and the four-effect salt leg are connected with the industrial salt slurry barrel through the industrial salt slurry pump.
[0026] Compared with the prior art, the utility model has the advantages of:
[0027] (1) The utility model discloses a four-effect evaporating system, which separates the feeding and discharging systems of the one-effect evaporator and the remaining three-effect evaporators, produces medicinal sodium chloride slurry by the one-effect evaporator, produces industrial salt slurry by the remaining three-effect evaporators, avoids the problem of overproduction of medicinal sodium chloride, can long-term open the equipment, simultaneously produces medicinal sodium chloride and industrial salt, improves the equipment utilization rate, and avoids intermittent production.
[0028] (2) The utility model discloses a four-effect evaporating system, which sequentially connects the one-effect evaporator with the two-effect evaporator, the three-effect evaporator, and the four-effect evaporator in series, and the one-effect evaporator is the first effect, which can avoid the steam produced by the industrial salt production device from polluting the medicinal sodium chloride production device.
[0029] (3) The utility model discloses a four-effect evaporating system, which shares more equipment and pipelines with the medicinal sodium chloride production device and the industrial salt production device, has small research and development and reconstruction investment cost, and has short reconstruction time. DRAWINGS
[0030] Figure 1 It is the whole structure schematic of the utility model Figure 1 .
[0031] Figure 2 It is the whole structure schematic of the utility model Figure 2 .
[0032] Figure: 1, primary evaporator; 11, primary evaporating tank; 12, primary heating chamber; 13, primary circulating pump; 14, primary condensate water bucket; 15, first preheater; 16, primary condensate pump; 17, primary salt leg; 2, secondary evaporator; 21, secondary evaporating tank; 22, secondary heating chamber; 23, secondary circulating pump; 24, secondary condensate water bucket; 26, secondary condensate pump; 27, secondary salt leg; 3, tertiary evaporator; 31, tertiary evaporating tank; 32, tertiary heating chamber; 33, tertiary circulating pump; 34, tertiary condensate water bucket; 35, second preheater; 37, tertiary salt leg; 4, quaternary evaporator; 41, quaternary evaporating tank; 42, quaternary heating chamber; 43, quaternary circulating pump; 44, quaternary condensate water bucket; 45, quaternary mother liquor concentration discharge pump; 46, quaternary condensate pump; 47, quaternary salt leg; 48, circulating water cooling device; 49, water ring vacuum pump; 410, third preheater; 5, industrial condensate water collection system; 51, industrial condensate water bucket; 52, fourth preheater; 53; 6, industrial refined brine supply system; 61, refined brine bucket; 62, industrial refined brine feeding pump; 7, salt slurry collection system; 71, industrial salt slurry bucket; 72, industrial salt slurry pump. DETAILED DESCRIPTION
[0033] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and one of ordinary skill in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.
[0034] In addition, if there are these terms "first", "second", these terms are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.
[0035] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0036] In this application, unless otherwise explicitly specified and limited, if there is a description such as "on" or "under" or similar description of the first feature to the second feature, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0037] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.
[0038] Referring to Figure 1 , Figure 1 The overall structure of an embodiment of the present application is shown Figure 1 An embodiment of the present application provides a pharmaceutical sodium chloride and industrial salt slurry co-production device, which comprises a pharmaceutical sodium chloride production device and an industrial salt slurry production device, wherein:
[0039] The pharmaceutical sodium chloride production device comprises a one-effect evaporator 1.
[0040] The industrial salt slurry production device comprises a two-effect evaporator 2, a three-effect evaporator 3 and a four-effect evaporator 4, and the one-effect evaporator 1, the two-effect evaporator 2, the three-effect evaporator 3 and the four-effect evaporator 4 are sequentially connected in series to form a multi-effect evaporator.
[0041] In combination Figure 2 As shown, Figure 2 The overall structure of an embodiment of the present application is shown Figure 2 In this embodiment, the one-effect evaporator 1 comprises a one-effect evaporation tank 11, a one-effect heating chamber 12, a one-effect circulating pump 13, a one-effect condensate water bucket 14, a first preheater 15, a one-effect condensate pump 16 and a one-effect salt leg 17, wherein:
[0042] The bottom of the one-effect heating chamber 12 is sequentially connected with the one-effect condensate water bucket 14, the first preheater 15 and the one-effect condensate pump 16.
[0043] The liquid phase top of the first heating chamber 12 is connected with the first evaporation tank 11, the bottom of the first evaporation tank 11 is connected with the liquid phase bottom of the first heating chamber 12, and the pharmaceutical sodium chloride mother liquor circulation is formed by the first circulating pump 13. The refined salt water pipeline is connected to the pharmaceutical sodium chloride mother liquor circulation through the first preheater 15. The refined salt water pipeline transports refined salt water, which provides raw materials for the pharmaceutical sodium chloride mother liquor circulation. The refined salt water is preheated by the first preheater 15 before entering the circulation, and the heat energy of the condensed water is effectively utilized. The gas phase of the first heating chamber 12 is injected with 0.6Mpa low-pressure steam, which directly or indirectly provides heat sources for the entire production device.
[0044] The bottom of the first evaporation tank 11 is provided with a first salt leg 17, and the first evaporation tank 11 is provided with an outlet for discharging the mother liquor. The pharmaceutical sodium chloride crystals are gathered at the first salt leg 17, and the pharmaceutical sodium chloride slurry is discharged to obtain the pharmaceutical sodium chloride product after subsequent processing. The outlet for discharging the mother liquor is provided to control the liquid level.
[0045] In this embodiment, the second evaporation device 2 includes a second evaporation tank 21, a second heating chamber 22, a second circulating pump 23, a second condensed water barrel 24, a second condensed water pump 26, and a second salt leg 27, wherein:
[0046] The gas phase of the second heating chamber 22 is connected with the top of the first evaporation tank 11, the liquid phase top of the second heating chamber 22 is connected with the second evaporation tank 21, the bottom of the second evaporation tank 21 is connected with the liquid phase bottom of the second heating chamber 22, and the second industrial salt mother liquor circulation is formed by the second circulating pump 23. The top of the first evaporation tank 11 discharges steam therein to provide heat sources for the second heating chamber 22.
[0047] The bottom of the second condensed water barrel 24 is connected with the gas phase bottom of the second heating chamber 22, and the bottom of the second condensed water barrel 24 is connected with the pharmaceutical condensed water barrel through the second condensed water pump 26. The top of the second condensed water barrel 24 is connected with the gas phase of the second heating chamber 22.
[0048] The bottom of the second evaporation tank 21 is provided with the second salt leg 27.
[0049] In this embodiment, the third evaporation device 3 includes a third evaporation tank 31, a third heating chamber 32, a third circulating pump 33, a third condensed water barrel 34, a second preheater 35, and a third salt leg 37, wherein:
[0050] The gas phase of the third heating chamber 32 is connected with the top of the second evaporation tank 21, the liquid phase top of the third heating chamber 32 is connected with the third evaporation tank 31, the bottom of the third evaporation tank 31 is connected with the liquid phase bottom of the third heating chamber 32, and the third industrial salt mother liquor circulation is formed by the third circulating pump 33. The top of the second evaporation tank 21 discharges steam therein to provide heat sources for the third heating chamber 32.
[0051] The top of the third-effect condensate bucket 34 is connected to the top of the second-effect evaporation tank 21 via the second preheater 35. The steam from the top of the second-effect evaporation tank 21, with the condensed part in between, enters the third-effect condensate bucket 34 via the second preheater 35.
[0052] The bottom of the third-effect evaporation tank 31 is provided with a third-effect salt leg 37.
[0053] In this embodiment, the fourth-effect evaporator 4 includes a fourth-effect evaporation tank 41, a fourth-effect heating chamber 42, a fourth-effect circulating pump 43, a fourth-effect condensate bucket 44, a fourth-effect mother liquor concentration discharge pump 45, a fourth-effect condensate pump 46, a fourth-effect salt leg 47, a circulating water cooling device 48, a water ring vacuum pump 49, and a third preheater 410, wherein:
[0054] The fourth-effect heating chamber 42 is connected to the top of the third-effect evaporation tank 31, the liquid-phase top of the fourth-effect heating chamber 42 is connected to the fourth-effect evaporation tank 41, the bottom of the fourth-effect evaporation tank 41 is connected to the liquid-phase bottom of the fourth-effect heating chamber 42, and the fourth-effect industrial salt mother liquor circulation is formed by the fourth-effect circulating pump 43. The fourth-effect industrial salt mother liquor circulation discharges mother liquor through the fourth-effect mother liquor concentration discharge pump 45. The top of the third-effect evaporation tank 31 discharges steam therein, providing heat source for the fourth-effect heating chamber 42.
[0055] The top of the fourth-effect condensate bucket 44 is connected to the top of the third-effect evaporation tank 31 via the third preheater 410, and the bottom is connected to the bottom of the third-effect condensate bucket 34. The top of the third-effect evaporation tank 31 discharges steam, and the condensed part in between enters the fourth-effect condensate bucket 44 via the third preheater 410.
[0056] The bottom of the fourth-effect evaporation tank 41 is provided with a fourth-effect salt leg 47, and the top is connected to the atmosphere via the circulating water cooling device 48 and the water ring vacuum pump 49. The top of the fourth-effect evaporation tank 41 discharges steam, which can be discharged into the atmosphere by the water ring vacuum pump 49 after cooling.
[0057] In this embodiment, an industrial condensate water collection system 5 is further included, which includes an industrial condensate bucket 51 and a fourth preheater 52. The industrial condensate bucket 51 is connected to the fourth-effect condensate bucket 44 via the fourth preheater 52 and the fourth-effect condensate pump 46. The fourth-effect condensate pump 46 discharges the condensed water in the third-effect condensate bucket 34 and the fourth-effect condensate bucket 44 into the industrial condensate bucket 51.
[0058] In this embodiment, an industrial refined brine supply system 6 is further included, which includes a refined brine bucket 61, an industrial refined brine feeding pump 62, and the fourth preheater 52. The refined brine bucket 61 is connected to the second-effect evaporation tank 21 via the industrial refined brine feeding pump 62, the fourth preheater 52, the third preheater 410, and the second preheater 35. The industrial refined brine enters the second-effect evaporation tank after being preheated by the condensed water three times, effectively utilizing the heat energy of the condensed water.
[0059] In this embodiment, an industrial brine collecting system 7 is further included, which comprises an industrial brine tank 71 and an industrial brine pump 72, and the two-effect salt leg 27, the three-effect salt leg 37 and the four-effect salt leg 47 are connected to the industrial brine tank 71 through the industrial brine pump 72. The two-effect salt leg 27, the three-effect salt leg 37 and the four-effect salt leg 47 respectively store the industrial salt crystals in the corresponding evaporator tanks, discharge the obtained brine, and are pumped to the industrial brine tank 71 through the industrial brine pump 72.
[0060] If the production of pharmaceutical sodium chloride is not carried out according to the specific market conditions, pharmaceutical condensed water can be added to the one-effect evaporator tank 11 to maintain the liquid level, and the evaporation generates secondary steam for the production of industrial brine in the subsequent evaporator.
[0061] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present application.
[0062] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.
Claims
1. A device for the co-production of pharmaceutical-grade sodium chloride and industrial salt slurry, characterized in that, This includes a pharmaceutical sodium chloride production unit and an industrial salt slurry production unit, wherein: The pharmaceutical sodium chloride production apparatus includes a single-effect evaporator; The industrial salt slurry production device includes a double-effect evaporator, a triple-effect evaporator, and a quadruple-effect evaporator, which are connected in series to form a multi-effect evaporator.
2. The apparatus for co-producing pharmaceutical sodium chloride and industrial salt slurry according to claim 1, characterized in that, The single-effect evaporator includes a single-effect evaporator tank, a single-effect heating chamber, a single-effect circulating pump, a single-effect condensate tank, a first preheater, a single-effect condensate pump, and a single-effect salt leg, wherein: The top of the liquid phase of the first-effect heating chamber is connected to the first-effect evaporator, and the bottom of the first-effect evaporator is connected to the bottom of the liquid phase of the first-effect heating chamber. A pharmaceutical sodium chloride mother liquor circulation is formed through a first-effect circulation pump, and the refined brine pipeline is connected to the pharmaceutical sodium chloride mother liquor circulation through the first preheater. The bottom of the first-effect heating chamber is sequentially connected to the first-effect condensate tank, the first preheater, and the first-effect condensate pump. The bottom of the single-effect evaporator is provided with a single-effect salt leg, and the single-effect evaporator has an outlet for discharging mother liquor.
3. The apparatus for co-producing pharmaceutical sodium chloride and industrial salt slurry according to claim 2, characterized in that, The double-effect evaporator includes a double-effect evaporation tank, a double-effect heating chamber, a double-effect circulating pump, a double-effect condensate tank, a double-effect condensate pump, and a double-effect salt leg, wherein: The gas phase of the double-effect heating chamber is connected to the top of the first-effect evaporator, the top of the liquid phase of the double-effect heating chamber is connected to the double-effect evaporator, and the bottom of the double-effect evaporator is connected to the bottom of the liquid phase of the double-effect heating chamber. The double-effect circulating pump forms a double-effect industrial salt mother liquor circulation. The bottom of the double-effect condensate tank is connected to the bottom of the gas phase of the double-effect heating chamber, and the bottom of the double-effect condensate tank is connected to the pharmaceutical condensate tank through the double-effect condensate pump. The gas phase of the double-effect heating chamber is connected to the top of the double-effect condensate tank. The bottom of the double-effect evaporator is provided with the double-effect salt leg.
4. The apparatus for co-producing pharmaceutical sodium chloride and industrial salt slurry according to claim 3, characterized in that, The triple-effect evaporator includes a triple-effect evaporator tank, a triple-effect heating chamber, a triple-effect circulating pump, a triple-effect condensate tank, a second preheater, and a triple-effect salt leg, wherein: The gas phase of the triple-effect heating chamber is connected to the top of the double-effect evaporator, the top of the liquid phase of the triple-effect heating chamber is connected to the triple-effect evaporator, and the bottom of the triple-effect evaporator is connected to the bottom of the liquid phase of the triple-effect heating chamber. The triple-effect circulating pump forms a triple-effect industrial salt mother liquor circulation system. The top of the triple-effect condensate tank is connected to the top of the double-effect evaporator via the second preheater; The triple-effect evaporator is equipped with a triple-effect salt leg at its bottom.
5. The apparatus for co-producing pharmaceutical sodium chloride and industrial salt slurry according to claim 4, characterized in that, The quadruple-effect evaporator includes a quadruple-effect evaporator tank, a quadruple-effect heating chamber, a quadruple-effect circulating pump, a quadruple-effect condensate tank, a quadruple-effect mother liquor concentration and discharge pump, a third preheater, a quadruple-effect condensate pump, a quadruple-effect salt leg, a circulating water cooling device, and a water ring vacuum pump, wherein: The four-effect heating chamber is connected to the top of the three-effect evaporator, the top of the liquid phase of the four-effect heating chamber is connected to the four-effect evaporator, and the bottom of the four-effect evaporator is connected to the bottom of the liquid phase of the four-effect heating chamber. The four-effect industrial salt mother liquor circulation is formed by the four-effect circulation pump, and the mother liquor is discharged by the four-effect mother liquor concentration and discharge pump. The top of the four-effect condensate tank is connected to the top of the three-effect evaporator via the third preheater, and the bottom is connected to the bottom of the three-effect condensate tank. The bottom of the four-effect evaporator is equipped with the four-effect salt leg, and the top is connected to the atmosphere through the circulating water cooling device and the water ring vacuum pump.
6. The apparatus for co-producing pharmaceutical sodium chloride and industrial salt slurry according to claim 5, characterized in that, It also includes an industrial condensate collection system, which includes an industrial condensate tank and a fourth preheater. The industrial condensate tank is connected to the fourth-effect condensate tank via the fourth preheater and a four-effect condensate pump.
7. The apparatus for co-producing pharmaceutical sodium chloride and industrial salt slurry according to claim 5, characterized in that, It also includes an industrial refined brine supply system, which includes a refined brine tank, an industrial refined brine feeding pump, and a fourth preheater. The refined brine tank is connected to the double-effect evaporator via the industrial refined brine feeding pump, the fourth preheater, the third preheater, and the second preheater.
8. The apparatus for co-producing pharmaceutical sodium chloride and industrial salt slurry according to claim 5, characterized in that, It also includes a brine collection system, which includes an industrial brine tank and an industrial brine pump. The double-effect, triple-effect, and quadruple-effect brine legs are connected to the industrial brine tank via the industrial brine pump.