CN210645175U

CN210645175U - Corn steep liquor drying system

Info

Publication number: CN210645175U
Application number: CN201921106455.6U
Authority: CN
Inventors: 黄炼
Original assignee: Hunan Sanyin Eco Agriculture Co ltd
Current assignee: Hunan Sanyin Eco Agriculture Co ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-06-02
Anticipated expiration: 2029-07-15

Abstract

The utility model provides a corn steep liquor drying system, which comprises a storage tank, a condenser, a distillation tower and a slicing machine, wherein a feeding interface of the condenser is communicated with a feeding interface of the storage tank, so that the corn steep liquor in the storage tank flows into the condenser; the top of the tower entry and the ejection of compact interface intercommunication of distillation column for in sending the corn steep liquor that flows out from the condenser to the distillation column, be provided with the distillation subassembly in the distillation column, the distillation subassembly is arranged in evaporating the light component in the corn steep liquor in the distillation column and forms first hot steam, first hot steam circulates to the condenser in through the top of the tower export of distillation column, the air inlet interface of condenser, be arranged in carrying out the heat exchange with the corn steep liquor in the condenser, heavy component deposit in the corn steep liquor is at the bottom of the tower of distillation column. In this scheme, the steam that the corn steep liquor produced in the condenser gets into the distillation column after again sent into the condenser in carry out the heat exchange with the liquid in the corn steep liquor, can not only reach dry purpose, can also make full use of heat energy, it is extravagant to reduce the energy, reduction in production cost.

Description

Corn steep liquor drying system

Technical Field

The utility model relates to a dry technical field of corn steep liquor especially relates to a corn steep liquor drying system.

Background

Corn steep liquor is a by-product from steeping corn in the production of corn. The corn steep liquor contains amino acid, organic acid, soluble sugar, vitamins, metal salts and other nutrient substances, is an important source for producing culture media such as antibiotics and the like, provides a natural organic nitrogen source for the growth of microorganisms, is convenient for transportation and storage because the corn steep liquor is packaged in a liquid vat, and has high content of protein and trace elements, and the use effect is influenced because the corn steep liquor is fermented and deteriorated when the temperature is slightly high.

In the prior art, there are two main ways of drying corn steep liquor: one is to adopt a spray drying mode to dry the corn steep liquor, and the mode has high energy consumption and low efficiency; another method is to spray corn steep liquor on a corn chip and then dry the corn steep liquor by drying the corn chip, which is inefficient and costly to purchase.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a corn steep liquor drying system, when aiming at solving dry corn steep liquor among the prior art, the energy consumption is high, inefficiency and problem with high costs.

In order to achieve the above purpose, the embodiment of the utility model provides a corn steep liquor drying system, which comprises a storage tank for storing corn steep liquor, a condenser, a distillation tower and a slicing machine,

the feeding port of the condenser is communicated with the feeding port of the storage tank, so that the corn steep liquor in the storage tank flows into the condenser;

the top of the tower entry of distillation column with the discharge port intercommunication for will follow flow out in the condenser the corn steep liquor is delivered to in the distillation column, be provided with the distillation subassembly in the distillation column, the distillation subassembly is used for with in the distillation column light component in the corn steep liquor evaporates and forms first hot steam, first hot steam warp the top of the tower export of distillation column, the interface circulation of admitting air of condenser extremely in the condenser, be used for with in the condenser the corn steep liquor carries out the heat exchange, heavy component deposit in the corn steep liquor is in the bottom of the tower of distillation column, heavy component passes through the export outflow of the bottom of the tower.

Preferably, the slicer further comprises at least one pair of hot rolls, and the heavy fraction is conveyed to the upper part of the hot rolls through the tower bottom outlet and a pipeline, so that the heavy fraction forms corn flakes when being rolled by the hot rolls.

Preferably, the top of hot roll is provided with collects the cover, collect the one end of cover pass through the pipeline with admit air interface connection, the other end of collecting the cover is faced the clearance setting between the hot roll, it is used for collecting to collect the heavy ends produces the second steam when passing through the hot roll, the second steam warp admit air the interface get into in the condenser.

Preferably, the condenser is a shell and tube condenser.

Preferably, a feeding pump is arranged on a pipeline between the feeding interface and the feeding interface.

Preferably, a valve is arranged between the feeding pump and the feeding interface, and a circulating pump is arranged between the feeding interface of the storage tank and the feeding interface of the storage tank.

Preferably, the condenser further comprises a gas-liquid separator and a purifier, the gas outlet interface of the condenser is communicated with the gas inlet of the gas-liquid separator, and the gas outlet of the gas-liquid separator is connected with the inlet of the purifier.

Preferably, the distillation assembly comprises an upper tray and a lower tray, a closed space is formed by the upper tray, the lower tray and the trays of the distillation tower in a surrounding manner, a plurality of flow-through pipelines which are arranged along the axial direction of the distillation tower and penetrate through the upper tray and the lower tray are arranged in the closed space, a fluid inlet and a fluid outlet which are communicated with the closed space are arranged on the distillation tower, and the hot fluid enters the closed space through the fluid inlet and exchanges heat with the corn steep liquor of the flow-through pipelines.

In the technical scheme, liquid contained in the corn steep liquor is utilized, heat steam is formed by absorbing heat of external fluid in the distillation tower, the hot steam is used for drying the corn steep liquor in the condenser in turn, and the hot steam and the corn steep liquor are dried to form a gas-liquid mixed phase to be discharged. Through the mode, the steam generated by the corn steep liquor in the condenser enters the distillation tower and is sent into the condenser again to exchange heat with the liquid in the corn steep liquor, so that the drying purpose can be achieved, the heat energy can be fully utilized, the energy waste is reduced, and the production cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of a corn steep liquor drying system according to an embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Corn steep liquor drying system	1342	Lower column plate
110	Storage tank	1343	Flow-through pipe
				111	Feeding interface	1344	Fluid inlet
112	Feeding interface	1345	Fluid outlet
				120	Condenser	140	Slicing machine
121	Feeding interface	141	Hot roller
				122	Discharging interface	142	Collecting cover
123	Air inlet interface	135	Spiral nozzle
				124	Air outlet interface	150	Feed pump
130	Distillation column	160	Circulating pump
				131	Inlet at the top of the tower	170	Valve gate
132	Outlet at the top of the tower	180	Discharging pump
				133	Outlet at the bottom of the tower	190	Gas-liquid separator
1341	Upper tower plate	1100	Purifying device

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Referring to fig. 1, a corn steep liquor drying system 100 according to an embodiment of the present invention includes a storage tank 110 storing corn steep liquor, a condenser 120, and a distillation tower 130.

Condenser 120 includes a feed connection 121, a discharge connection 122 in communication with feed connection 121, an inlet connection 123, and an outlet connection 124 in communication with inlet connection 123. The feed connection 121 of the condenser 120 is in communication with the feed connection 111 of the holding tank 110 such that the raw corn steep liquor in the holding tank 110 flows into the condenser 120. For ease of illustration, the original corn steep liquor is referred to as corn steep liquor # 1. The No. 1 corn steep liquor enters the condenser 120 through the feeding port 121, a high-temperature pipeline is further arranged in the condenser 120, and high-temperature fluid, such as high-temperature steam, flows through the high-temperature pipeline. No. 1 corn steep liquor in the condenser 120 and the high-temperature fluid in the high-temperature pipeline take place the heat exchange for the liquid evaporation that contains in the corn steep liquor forms steam, realizes the first step drying to the corn steep liquor, obtains more sticky No. 2 corn steep liquor. It will be appreciated that the hot fluid from the corn steep liquor is subjected to certain post-processing after exiting the outlet port 124.

Distillation column 130 includes a top inlet 131 disposed at the top of distillation column 130, a top outlet 132, and a bottom outlet 133 disposed at the bottom of distillation column 130. The top inlet 131 of the distillation column 130 is connected to the outlet 122 of the condenser 120, and is used for feeding the relatively viscous corn steep liquor No. 2 dried by the condenser 120 flowing out of the condenser 120 into the distillation column 130, and then flowing into the distillation column 130 together with the steam generated in the corn steep liquor No. 2.

A distillation assembly is arranged in the distillation tower 130, and is used for evaporating light components in the corn steep liquor No. 2 in the distillation tower 130 to form first hot steam with a certain temperature, wherein the first hot steam comprises steam carried in the corn steep liquor No. 2 and new steam formed by re-evaporation through the distillation assembly. The first hot vapor is circulated into the condenser 120 through the top outlet 132 of the distillation column 130 and the air inlet 123 of the condenser 120, and is used for heat exchange with the No. 1 corn steep liquor in the condenser 120. The method utilizes the hot steam formed by the liquid in the No. 2 corn steep liquor through the distillation tower 130 to dry the No. 1 corn steep liquor, can reduce the waste of external steam energy, and is favorable for reducing energy consumption.

The heavy component may also contain liquid, and after the heavy component flows out through the bottom outlet, the liquid in the heavy component needs to be further removed by a drying device to obtain dried corn meal or corn solids with other shapes. Preferably, the drying apparatus is a slicer 140, wherein the slicer 140 includes at least one pair of hot rolls 141, and the recombined fraction is conveyed above the hot rolls 141. After the distillation assembly evaporates the light components in the corn steep liquor No. 2, the heavy components in the corn steep liquor are deposited at the bottom of the distillation tower 130 and are conveyed to the upper part of the slicer 140 through the outlet 133 at the bottom of the tower and a pipeline communicated with the outlet 133 at the bottom of the tower. It should be noted that the surface temperature of the hot rolls 141 is high, and when the heavy fraction passes through the nip between the pair of hot rolls 141, it contacts the surface of the hot rolls 141, a small amount of liquid component contained in the heavy fraction absorbs heat and evaporates to form second hot steam, and finally the substance delivered through the nip is solid, i.e., rolled to form the desired corn flakes.

In order to heat the rollers of the slicer 140, a flowing high-temperature fluid may be introduced into the rollers, which may be implemented based on the prior art, and the specific manner is not limited. In addition, the number of pairs of the hot rolls 141 may be multiple, and correspondingly, a spray head is provided corresponding to each pair of the hot rolls 141, and the heavy components are sprayed from the spray heads and can be sufficiently contacted with the hot rolls 141, which is beneficial to more thorough drying.

In other embodiments, the drying device can also be a dryer, and as the liquid component in the heavy component is less, a good drying effect can be achieved in a relatively short time, so that the energy consumption is reduced.

In the technical scheme of the utility model, utilize the liquid that contains in the corn steep liquor itself, heat through absorbing external fluidic heat in distillation column 130 forms heat steam, and the corn steep liquor in the dry condenser 120 is in turn dried to heat steam, and heat steam and corn steep liquor form the gas-liquid mixture phase after drying and discharge. In this way, the steam generated by the corn steep liquor in the condenser 120 enters the distillation tower 130 and is sent into the condenser 120 again to exchange heat with the liquid in the corn steep liquor, so that the drying purpose can be achieved, the heat energy can be fully utilized, the energy waste is reduced, and the production cost is reduced. Meanwhile, the slicer 140 is utilized, so that the final drying purpose is achieved, and the obtained corn slices are convenient to collect.

Preferably, the condenser 120 is a tube bundle condenser 120. In order to fully utilize the thermal energy of the hot steam, a plurality of condensers 120 may be disposed in series.

Further, a feeding pump 150 is disposed on the pipeline between the feeding port 111 and the feeding port 121 to allow the corn steep liquor to rapidly enter the condenser 120.

Further, in order to prevent the corn steep liquor from settling in the storage tank 110, a circulation pump 160 is disposed between the feeding port 111 of the storage tank 110 and the feeding port 112 of the storage tank 110. Meanwhile, a valve 170 is disposed between the feed pump 150 and the feed port 111, and when the circulation pump 160 is turned on, the valve 170 and the feed pump 150 are closed to prevent the corn steep liquor from entering the condenser 120.

Further, the corn steep liquor drying system 100 further comprises a discharge pump 180, one end of the discharge pump 180 is communicated with the outlet at the bottom of the tower, and the other end of the discharge pump 180 is communicated to the upper part of the hot roll 141 through a pipeline. The arrangement of the discharge pump 180 is favorable for smooth discharge of the heavy components because the heavy components have high specific gravity and low flow speed.

In a specific embodiment, the distillation assembly includes an upper tray 1341 and a lower tray 1342, the upper tray 1341, the lower tray 1342 and the trays of the distillation tower 130 are surrounded to form an enclosed space, a plurality of flow-through pipes 1343 are disposed in the enclosed space and are disposed along an axial direction of the distillation tower 130 and penetrate through the upper tray 1341 and the lower tray 1342, the distillation tower 130 is provided with a fluid inlet 1344 and a fluid outlet 1345 which are communicated with the enclosed space, and a hot fluid enters the enclosed space through the fluid inlet 1344 and exchanges heat with corn steep liquor of the flow-through pipes 1343. Corn steep liquor No. 2 enters distillation column 130 from the top and then falls on upper tray 1341. The No. 2 corn steep liquor passes through the flow through pipe 1343 and exchanges heat with hot fluid in the closed space, light components in the No. 2 corn steep liquor are heated, evaporated and flow to the top of the tower, and flow into the condenser 120 through the outlet 132 at the top of the tower, heavy components in the No. 2 corn steep liquor are deposited at the bottom of the tower and are sent to the upper part of the hot roller 141 through the outlet 133 at the bottom of the tower. The hot fluid may be hot water, or hot steam, etc. The axis of the through flow pipe 1343 is preferably sloped or curved to reduce the descending speed of the No. 2 corn steep liquor and improve the heat exchange efficiency.

In a specific embodiment, in order to improve the utilization rate of heat energy, a collecting cover 142 is arranged above the hot rolling roll 141, one end of the collecting cover 142 is connected with the air inlet interface 123 through a pipeline, the other end of the collecting cover 142 is arranged facing the gap between the hot rolling rolls 141, and second steam is generated when the collecting cover 142 is used for collecting heavy components and passes through the hot rolling rolls 141 and enters the condenser 120 through the air inlet interface 123. When the hot roll 141 rolls and recombines, the liquid substance remaining in the heavy constituents is heated by the hot roll 141 to form hot steam with a certain heat energy. Collect the hot steam that cover 142 collected the formation to send to and carry out the heat exchange with No. 1 corn steep liquor in the condenser 120, not only can carry out recovery processing to hot steam, can also utilize the dry corn steep liquor of hot steam's heat energy. A collection hood 142 is provided above the hot roll 141.

In addition, in order to make the No. 1 corn steep liquor uniformly fall on the upper tray 1341, the top inlet 131 is provided with a spiral nozzle 135, and the spiral nozzle 135 is communicated with the discharging interface 122 through a pipeline. The corn steep liquor No. 1 is formed into a larger spray range by the spiral nozzle 135. The spiral nozzle 135 is a commercially available spiral nozzle 135 and will not be described in detail herein.

It is understood that, in order to process the gas-liquid mixed phase from the gas outlet port 124, the corn steep liquor drying system 100 further includes a gas-liquid separator 190 and a purifier 1100, the gas outlet port 124 of the condenser 120 is connected to the gas inlet of the gas-liquid separator 190, and the gas outlet of the gas-liquid separator 190 is connected to the inlet of the purifier 1100. The gas-liquid separator 190 separates gas phase and liquid phase in the gas-liquid mixed phase, the liquid phase is deposited at the bottom of the enterprise separator and is discharged through a sewage outlet, the gas phase enters the purifier 1100 through the gas outlet, harmful components such as sulfide in the gas phase are purified through the purifier 1100, and then the gas phase is discharged to the atmosphere through the purifier 1100 so as to avoid environmental pollution.

The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.

Claims

1. A corn steep liquor drying system is characterized by comprising a storage tank for storing corn steep liquor, a condenser and a distillation tower,

the top of the tower entry of distillation column with the ejection of compact interface intercommunication of condenser for will follow flow out in the condenser corn steep liquor is delivered to in the distillation column, be provided with the distillation subassembly in the distillation column, the distillation subassembly is used for with in the distillation column light component in the corn steep liquor evaporates and forms first hot steam, first hot steam warp the top of the tower export of distillation column, the interface circulation of admitting air of condenser extremely in the condenser, be used for with in the condenser the corn steep liquor carries out the heat exchange, heavy component deposit in the corn steep liquor is in the bottom of the tower of distillation column, heavy component passes through the export outflow of the bottom of the tower.

2. A corn steep liquor drying system as claimed in claim 1 further comprising a slicer including at least one pair of hot rolls, said heavy fraction being transported through said bottom outlet and piping above said hot rolls such that said heavy fraction forms corn flakes when rolled by said hot rolls.

3. A corn steep liquor drying system as claimed in claim 2, wherein a collection hood is disposed above said hot rolling mill, one end of said collection hood is connected to said air inlet port via a pipe, the other end of said collection hood is disposed facing the gap between said hot rolling mill, and said collection hood is adapted to collect said heavy components and generate a second steam when passing through said hot rolling mill, said second steam entering said condenser through said air inlet port.

4. A corn steep liquor drying system as claimed in claim 1, wherein said overhead inlet is provided with a screw nozzle, said screw nozzle being in communication with said outlet connection via a pipe.

5. A corn steep liquor drying system as claimed in claim 1, wherein said distillation assembly comprises an upper tray and a lower tray, said upper tray, said lower tray and said trays of said distillation column are enclosed to form an enclosed space, a plurality of flow conduits are disposed in said enclosed space along the axial direction of said distillation column and pass through said upper tray and said lower tray, said distillation column is provided with a fluid inlet and a fluid outlet communicating with said enclosed space, and a hot fluid enters said enclosed space through said fluid inlet and exchanges heat with the corn steep liquor in said flow conduits.

6. A corn steep liquor drying system as claimed in claim 2, further comprising a discharge pump, one end of said discharge pump being connected to said bottom outlet, the other end of said discharge pump being connected to above said hot roll via a pipe.

7. A corn steep liquor drying system as claimed in any one of claims 1 to 6, wherein said condenser is a tube condenser.

8. A corn steep liquor drying system as claimed in any one of claims 1 to 6, wherein a feed pump is provided on the pipe between said feed connection and said feed connection.

9. A corn steep liquor drying system as claimed in claim 8, wherein a valve is provided between said feed pump and said feed connection, and a circulation pump is provided between said feed connection of said storage tank and said inlet connection of said storage tank.

10. A corn steep liquor drying system as claimed in any one of claims 1 to 6, further comprising a gas-liquid separator and a purifier, wherein the gas outlet port of the condenser is communicated with the gas inlet of the gas-liquid separator, and the gas outlet of the gas-liquid separator is connected with the inlet of the purifier.