Efficient humic acid drying device

Abstract

The utility model relates to the technical field of humic acid production, in particular to an efficient drying device for humic acid. The efficient humic acid drying device comprises a reaction kettle, the reaction kettle is connected with a pre-drying box through a rotary solid-liquid separator, the pre-drying box is connected with a dryer through an elevator, the rotary solid-liquid separator is connected with a neutralization tank through a backwashing filter, and the neutralization tank is connected with a neutralization liquid preparation tank. A first-stage conveying belt and a second-stage conveying belt are arranged in the pre-drying box, and an inclined guide plate is connected between the first-stage conveying belt and the second-stage conveying belt. The limiting plate above the first-stage conveying belt in the pre-drying box can remove and flatten materials, and the tooth-shaped plate arranges the materials into a wave shape, so that the middle and lower layers of materials can be in full contact with a heat source during pre-drying, the problem that only the surface layer of an existing device can be dried due to thick discharged materials is effectively solved, and the pre-drying quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to humic acid production technical field, concretely is humic acid efficient drying device. BACKGROUND

[0002] Humic acid is a kind of organic high molecular compound widely existing in nature, is formed by the complex process such as decomposition and synthesis under the action of microorganism to plant and animal remains.It has unique physical and chemical properties, has important application in many fields such as agriculture, industry, environmental protection, etc., such as soil conditioner, fertilizer synergist in agriculture, can be used in the treatment of petroleum, coal and other industries in industry, etc.

[0003] In workshop production, the existing drying device is merely simply pre-drying to discharge, however, due to the large amount of one-time discharge, the thickness of humic acid accumulated on the conveying belt is relatively thick, which leads to that the pre-drying process can only dry the surface layer of humic acid, and the middle and lower layers of humic acid are not effectively dried, which affects the overall drying effect.In addition, only relying on the drying box for drying, the drying efficiency is low, which is difficult to meet the demand of large-scale production. UTILITY MODEL CONTENT

[0004] According to the above deficiencies in the prior art, the purpose of the utility model is to provide a kind of humic acid efficient drying device, by setting up rotating solid-liquid separator, pre-drying box, dryer and other components work together, optimize drying process.The first conveying belt and the second conveying belt in pre-drying box and related structure can better disperse and preliminarily dry humic acid.Especially the setting of drying cone barrel, compared with traditional drying method, the efficiency is higher, and its unique structure can make humic acid fully contact with heat source in the barrel, realize rapid drying.At the same time, the alumina layer at the bottom of the drying cone barrel greatly reduces the wear of the barrel wall by the material, effectively improves the service life of the drying cone barrel, reduces the equipment maintenance cost, improves the stability and reliability of the whole drying device, so as to efficiently and stably complete the drying work of humic acid, meet the production demand.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] The humic acid efficient drying device, including reaction kettle, reaction kettle is connected with pre-drying box by rotating solid-liquid separator, pre-drying box is connected with dryer by elevator, rotating solid-liquid separator is connected with neutralization tank by backwashing filter, neutralization tank is connected with neutralization liquid preparation tank, the inside of pre-drying box is equipped with first conveying belt and second conveying belt, and the first conveying belt and the second conveying belt are connected with inclined guide plate.

[0007] The reaction kettle has a high-strength tank body, is equipped with a stirring device to facilitate the full mixing and reaction of materials, and is provided with inlet and outlet ports and temperature, pressure and other monitoring instrument interfaces to facilitate the control of reaction conditions. The pre-reaction of humic acid materials provides a stable and controllable environment, ensures that the materials reach a suitable reaction state before entering the subsequent process, and lays a foundation for subsequent solid-liquid separation and drying operations. The rotary solid-liquid separator is composed of a high-speed rotating drum, a screw conveyor and the like. The drum is driven by a motor to rotate at high speed, and utilizes centrifugal force to achieve solid-liquid separation; the screw conveyor transports the separated solid materials to the outlet. The humic acid materials are efficiently separated into liquid and solid, reducing the moisture content of the materials in the subsequent drying process, reducing energy consumption and cost of drying, and improving drying efficiency.

[0008] The pre-drying box is internally provided with a first conveying belt and a second conveying belt, as well as a pre-drying box coil pipe, a limiting plate, a toothed plate, an inclined guide plate, a hot air outlet and a reversed T-shaped hot air outlet. The box body is made of heat insulation material to reduce heat loss. Through the cooperation of various structures, the humic acid materials are preliminarily dried and turned over, the materials are uniformly heated, the pre-drying effect is improved, the working pressure of the subsequent dryer is reduced, and a good foundation is laid for the final drying. At the same time, the hot air of the dryer is delivered to the hot air outlet and the reversed T-shaped hot air outlet through the connecting pipeline, realizing the recycling of the hot air, reducing the energy consumption of the pre-drying box itself, and further reducing the overall drying cost. The backflushing filter is composed of a filter element, a shell, a backflushing device and the like. The filter element usually adopts a high-precision filter screen which can effectively intercept impurities; the backflushing device flushes the filter screen when needed to ensure the filtering effect. The liquid separated from the rotary solid-liquid separator is filtered to remove impurities, ensuring that the liquid entering the neutralization tank is pure and ensuring the smooth progress of the neutralization reaction and the quality of the neutralization liquid.

[0009] The first conveying belt is located above the second conveying belt, and the pre-drying box is internally provided with a pre-drying box coil pipe which is located above the first conveying belt.

[0010] The limiting plate and the toothed plate are located above the first conveying belt, and the toothed plate is located on the side close to the second conveying belt.

[0011] The distance between the limiting plate and the first conveying belt is greater than the distance between the toothed plate and the first conveying belt, and the toothed plate is provided with a material distribution tooth below.

[0012] The hot air outlet is provided above the first conveying belt, and the reversed T-shaped hot air outlet is provided above the second conveying belt.

[0013] The neutralization liquid preparation tank is externally provided with a cooling jacket which is connected to the pre-drying box coil pipe through a pipeline, and the internal of the neutralization liquid preparation tank is provided with a stirring paddle.

[0014] The tank body of the neutralizing liquid preparation tank is provided with a stirring paddle driven by a motor to make the calcium oxide and water fully mix and react, and is provided with a cooling jacket outside, equipped with a pipeline connected to the pre-drying box coil pipe to realize heat transfer.

[0015] The pre-drying box is connected with the dryer through an elevator, and the dryer is internally provided with a drying cone barrel, and the bottom of the drying cone barrel is provided with an anti-abrasion aluminum oxide layer.

[0016] The dryer comprises a drying cone barrel, a hot air inlet pipeline and a connecting pipeline. The bottom of the drying cone barrel is provided with an anti-abrasion aluminum oxide layer, and the barrel body is made of high-temperature-resistant and wear-resistant material. The connecting pipeline is used for hot air circulation and is equipped with valve elements to adjust the air volume and air direction. The special structure of the drying cone barrel enables the material to fully contact with the hot air, thereby realizing efficient drying. The anti-abrasion aluminum oxide layer greatly prolongs the service life of the drying cone barrel and reduces the equipment maintenance cost. The hot air circulation design not only improves the energy utilization rate of the dryer, but also realizes waste heat reuse by conveying the hot air to the inverted T-shaped hot air outlet device and the hot air outlet of the pre-drying box, thereby reducing the energy consumption of the entire drying system and improving the overall drying efficiency.

[0017] The dryer is connected with the hot air inlet pipeline, and the dryer is connected with the inverted T-shaped hot air outlet device and the hot air outlet through the connecting pipeline.

[0018] The working principle of the utility model is as follows:

[0019] The humic acid material first enters a reaction kettle to carry out relevant preliminary reaction treatment. After the reaction is completed, the material enters a rotary solid-liquid separator from the reaction kettle to carry out solid-liquid separation. The separated liquid enters a neutralization tank through a back flushing filter. In the neutralization liquid preparation tank, the calcium oxide and water carry out an exothermic reaction, and the generated heat is transmitted to the pre-drying box through an outer cooling jacket and a pipeline. The stirring paddle in the neutralization liquid preparation tank promotes the calcium oxide and water to fully react. The prepared neutralization liquid enters the neutralization tank from the tank, and the liquid entering the neutralization tank from the back flushing filter is neutralized and treated. The humic acid solid material after solid-liquid separation enters the pre-drying box. The pre-drying box is provided with upper and lower two conveying belts. The upper conveying belt is a first conveying belt, and the lower conveying belt is a second conveying belt. The material falls on the first conveying belt. The limiting plate above the first conveying belt removes and flattens the material. The toothed plate makes the material into a wave shape, so that the middle and lower layers of the material can contact the heat source. At the same time, the hot air outlet is arranged above the first conveying belt to preliminarily dry the material. The pre-drying box pipeline utilizes the heat generated by the reaction of the neutralization liquid preparation tank to assist in drying the material above the first conveying belt. The preliminarily dried material slides to the second conveying belt through the inclined guide plate, and the material is turned over during the sliding process. The inverted T-shaped hot air outlet is arranged above the second conveying belt to dry the material again. The pre-dried material is lifted from the pre-drying box to the dryer by the elevator. The dryer is connected with the hot air inlet pipeline to provide hot air. The dryer is connected with the inverted T-shaped hot air outlet and the hot air outlet through the connecting pipeline to realize the recycling of the hot air. The material is further dried in the dryer. The dryer is provided with a drying cone barrel. The bottom of the drying cone barrel is provided with an abrasion-resistant aluminum oxide layer to improve the drying efficiency and reduce the abrasion, and finally the high-efficiency drying of the humic acid is completed.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] (1) The limiting plate above the first conveying belt in the pre-drying box can remove and flatten the material. The toothed plate makes the material into a wave shape, so that the middle and lower layers of the material can also fully contact the heat source during pre-drying, effectively solving the problem that the existing device can only dry the surface layer due to thick discharge, and improving the pre-drying quality.

[0022] (2) The material slides to the second conveying belt through the inclined guide plate to realize overall turning, and then is dried again through the inverted T-shaped hot air outlet, further ensuring the uniformity of the material drying.

[0023] (3) Compared with the traditional drying method, the setting of the drying cone barrel can make the humic acid fully contact the heat source in the barrel, accelerate the drying speed, effectively improve the overall drying efficiency, and meet the large-scale production demand.

[0024] (4) The abrasion-resistant aluminum oxide layer at the bottom of the drying cone barrel greatly reduces the abrasion of the barrel wall by the material, prolongs the service life of the drying cone barrel, reduces the equipment maintenance cost, and ensures the stable and reliable operation of the drying device. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structure schematic view of the high -efficient drying device of humic acid of the utility model;

[0026] Figure 2 It is the structure schematic view of the tooth type board of the utility model;

[0027] Figure 3 It is the plan view of the drying cone barrel of the utility model;

[0028] In the drawing: 1, reaction kettle;2, rotary solid-liquid separator;3, pre-drying box;4, dryer;5, backwash filter;6, neutralizing liquid preparation tank;7, neutralizing tank;8, primary conveying belt;9, secondary conveying belt;10, inclined guide plate;11, pre-drying box coil;12, limiting plate;13, tooth type board;14, inverted T-shaped hot air outlet;15, hot air outlet;16, elevator;17, hot air inlet pipeline;18, connecting pipeline;19, distributing tooth;20, drying cone barrel;21, wear-resistant aluminum oxide layer. DETAILED DESCRIPTION

[0029] In order to make the utility model purposes, technical schemes more clearly, in the following, to the utility model, make further detailed description with the drawings.

[0030] Example 1

[0031] As Figure 1 The high -efficient drying device of humic acid, including reaction kettle 1, reaction kettle 1 is connected with pre-drying box 3 through rotary solid-liquid separator 2, pre-drying box 3 is connected with dryer 4 through elevator 16, rotary solid-liquid separator 2 is connected with neutralizing tank 7 through backwash filter 5, and neutralizing tank 7 is connected with neutralizing liquid preparation tank 6, the inside of pre-drying box 3 is equipped with primary conveying belt 8 and secondary conveying belt 9, and the inclined guide plate 10 is connected between primary conveying belt 8 and secondary conveying belt 9. Primary conveying belt 8 is located above secondary conveying belt 9, pre-drying box 3 is provided with pre-drying box coil 11 in the inside, and pre-drying box coil 11 is located above primary conveying belt 8. The limiting plate 12 and tooth type board 13 are arranged above primary conveying belt 8, and tooth type board 13 is located on the side close to secondary conveying belt 9. Figures 2-3As shown, the distance between the limiting plate 12 and the first conveying belt 8 is greater than the distance between the toothed plate 13 and the first conveying belt 8, and the toothed plate 13 is provided with a distribution tooth 19. The upper side of the first conveying belt 8 is provided with a hot air outlet 15, and the upper side of the second conveying belt 9 is provided with a reverse T-shaped hot air outlet 14. The outside of the neutral liquid preparation tank 6 is provided with a cooling jacket, which is connected with the pre-drying box coil pipe 11 through a pipeline, and the inside of the neutral liquid preparation tank 6 is provided with a stirring paddle. The inside of the pre-drying box 3 is provided with the first conveying belt 8 and the second conveying belt 9, the pre-drying box coil pipe 11, the limiting plate 12, the toothed plate 13, the inclined guide plate 10, the hot air outlet 15 and the reverse T-shaped hot air outlet 14. The box body is made of heat insulation material to reduce heat loss. The reverse T-shaped hot air outlet 14 has a long conduit to reduce the distance between the outlet and the humic acid. The pre-drying box 3 is provided with an elevator 16 between the pre-drying box 3 and the dryer 4, and the inside of the dryer 4 is provided with a drying cone barrel 20, and the bottom of the drying cone barrel 20 is provided with an abrasion-resistant aluminum oxide layer 21. The dryer 4 is connected with a hot air inlet pipeline 17, and the dryer 4 is connected with the reverse T-shaped hot air outlet 14 and the hot air outlet 15 through a connecting pipeline 18.

[0032] The above-mentioned high-efficiency humic acid drying device, when working, includes the following steps:

[0033] (1) The humic acid material enters the reaction kettle 1 for preliminary reaction, and then enters the rotary solid-liquid separator 2 for solid-liquid separation. The separated liquid flows into the neutralizing tank 7 through the backflushing filter 5. In the neutral liquid preparation tank 6, the calcium oxide reacts with water to release heat, which is transmitted to the pre-drying box coil pipe 11 through the cooling jacket and the pipeline, and the stirring paddle in the tank makes the reaction sufficient, and the prepared neutralizing liquid flows into the neutralizing tank 7 to treat the liquid; (2) The solid material after solid-liquid separation enters the pre-drying box 3 and falls onto the first conveying belt 8. The limiting plate 12 above flattens the material, and the toothed plate 13 makes it into a wave shape, which is beneficial to the contact of the lower layer of material with the heat source. At the same time, the hot air outlet 15 performs preliminary drying, and the pre-drying box coil pipe 11 uses the heat generated by the neutral liquid preparation tank 6 to assist drying. The preliminarily dried material slides down to the second conveying belt 9 through the inclined guide plate 10, and is turned over in the process. The reverse T-shaped hot air outlet 14 above the second conveying belt 9 dries the material again; (3) The pre-dried material is sent to the dryer 4 by the elevator 16. The dryer 4 connects the hot air inlet pipeline 17 to obtain hot air, and is connected with the reverse T-shaped hot air outlet 14 and the hot air outlet 15 through the connecting pipeline 18 to realize hot air circulation. The drying cone barrel 20 in the dryer 4 has an abrasion-resistant aluminum oxide layer 21 at the bottom to improve the drying efficiency and reduce abrasion, and the high-efficiency drying of the humic acid is completed.

Claims

1. A high-efficiency drying device for humic acid, characterized in that, The reactor (1) is connected to the pre-drying box (3) via a rotary solid-liquid separator (2). The pre-drying box (3) is connected to the dryer (4) via a hoist (16). The rotary solid-liquid separator (2) is connected to the neutralization tank (7) via a backwash filter (5). The neutralization tank (7) is connected to a neutralization liquid preparation tank (6). The pre-drying box (3) is equipped with a primary conveyor belt (8) and a secondary conveyor belt (9). An inclined guide plate (10) is connected between the primary conveyor belt (8) and the secondary conveyor belt (9).

2. The high-efficiency humic acid drying device according to claim 1, characterized in that, The primary conveyor belt (8) is located above the secondary conveyor belt (9), and the pre-drying box (3) is equipped with a pre-drying box coil (11), which is located above the primary conveyor belt (8).

3. The high-efficiency humic acid drying device according to claim 1, characterized in that, The primary conveyor belt (8) is provided with a limiting plate (12) and a toothed plate (13) above it, with the toothed plate (13) located on the side close to the secondary conveyor belt (9).

4. The high-efficiency humic acid drying device according to claim 3, characterized in that, The distance between the limiting plate (12) and the primary conveyor belt (8) is greater than the distance between the toothed plate (13) and the primary conveyor belt (8), and the toothed plate (13) is provided with material separating teeth (19) below it.

5. The high-efficiency humic acid drying device according to claim 1, characterized in that, A hot air outlet (15) is provided above the primary conveyor belt (8), and an inverted T-shaped hot air outlet (14) is provided above the secondary conveyor belt (9).

6. The high-efficiency humic acid drying device according to claim 2, characterized in that, The neutralizing liquid preparation tank (6) is provided with a cooling sleeve on the outside, and the cooling sleeve is connected to the pre-drying box coil (11) through a pipe. The neutralizing liquid preparation tank (6) is provided with a stirring paddle inside.

7. The high-efficiency humic acid drying device according to claim 1, characterized in that, An elevator (16) is provided between the pre-drying box (3) and the dryer (4). The dryer (4) is provided with a drying cone (20) inside, and the bottom of the drying cone (20) is provided with a wear-resistant aluminum oxide layer (21).

8. The high-efficiency humic acid drying device according to claim 5, characterized in that, The dryer (4) is connected to a hot air inlet pipe (17), the dryer (4) is connected to an inverted T-shaped hot air outlet (14) through a connecting pipe (18), and the dryer (4) is connected to a hot air outlet (15) through a connecting pipe (18).

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