CN221230556U - Device for producing biuret by melting method - Google Patents
Device for producing biuret by melting method Download PDFInfo
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- CN221230556U CN221230556U CN202322649862.4U CN202322649862U CN221230556U CN 221230556 U CN221230556 U CN 221230556U CN 202322649862 U CN202322649862 U CN 202322649862U CN 221230556 U CN221230556 U CN 221230556U
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- Prior art keywords
- biuret
- washing
- valve
- ammonia
- kettle
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- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000002844 melting Methods 0.000 title claims abstract description 15
- 230000008018 melting Effects 0.000 title claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 79
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000004202 carbamide Substances 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- 238000003860 storage Methods 0.000 claims abstract description 25
- 238000001035 drying Methods 0.000 claims abstract description 23
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 151
- 229910021529 ammonia Inorganic materials 0.000 claims description 69
- 238000010521 absorption reaction Methods 0.000 claims description 54
- 239000007788 liquid Substances 0.000 claims description 47
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 36
- 239000007791 liquid phase Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 238000010298 pulverizing process Methods 0.000 claims description 8
- 239000007790 solid phase Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 5
- 239000012071 phase Substances 0.000 claims description 3
- 238000000746 purification Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 8
- 239000000843 powder Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 230000001502 supplementing effect Effects 0.000 description 5
- XLJMAIOERFSOGZ-UHFFFAOYSA-N cyanic acid Chemical compound OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 description 4
- 239000012265 solid product Substances 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003674 animal food additive Substances 0.000 description 2
- QYTOONVFPBUIJG-UHFFFAOYSA-N azane;cyanic acid Chemical compound [NH4+].[O-]C#N QYTOONVFPBUIJG-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241000283690 Bos taurus Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000282849 Ruminantia Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003276 anti-hypertensive effect Effects 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 239000002934 diuretic Substances 0.000 description 1
- 230000001882 diuretic effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000021050 feed intake Nutrition 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000000147 hypnotic effect Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000932 sedative agent Substances 0.000 description 1
- 230000001624 sedative effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model belongs to a device for producing biuret by a melting method; the device comprises: a reaction kettle for melting urea and a biuret pretreatment unit for crushing and washing the biuret; a drying box for drying the biuret pretreatment unit; the outlet of the drying box is connected with a biuret storage tank; the direct production of biuret in the form of molten urea is realized by using the reaction kettle for melting urea, so that the aims of no need of introducing other chemical raw materials, convenient purification of the biuret in a later period and equipment acquisition cost and environmental friendliness are achieved.
Description
Technical Field
The utility model belongs to the technical field of biuret production, and particularly relates to a device for producing biuret by a melting method.
Background
Biuret has great utility in various industries: in medicine, can be used for preparing hypnotic and sedative, and also has diuretic and antihypertensive effects; in industry, it is useful as a fiber bleaching agent, paper flame retardant, leather and textile coating, foaming agent and foaming agent for sponge products. In agriculture, the fertilizer can be used as a long-acting nitrogen fertilizer; in animal husbandry, the feed additive can be used as feed additive for ruminant animals, and can improve daily gain and feed intake of cattle, and influence digestion and utilization of dry matters and crude fibers and balance of energy and nitrogen.
At present, the conventional method for preparing biuret is a method for preparing the biuret by interaction of urea and cyanic acid or ammonium cyanate, namely Ma Nafa and a negative pressure method, wherein the Ma Nafa of the biuret is prepared by the interaction of urea and cyanic acid or ammonium cyanate, the purity of the product is 30-38%, and the negative pressure method needs to be carried out in the presence of disodium hydrogen phosphate, and the purity of the product is about 45%; in summary, the conventional methods at present all require the introduction of other chemical raw materials, which results in a complex purification process in the following biuret process.
Disclosure of utility model
The utility model aims to provide a device for producing biuret by a melting method, which solves the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
an apparatus for producing biuret by a melt process, the apparatus comprising:
A reaction kettle for melting urea,
And a biuret pretreatment unit for pulverizing and washing the biuret; a drying box for drying the biuret pretreatment unit;
And the outlet of the drying box is connected with a biuret storage tank.
The utility model has the following effects: the direct production of biuret in the form of molten urea is realized by using a reaction kettle for melting urea, so that the characteristics of no need of introducing other chemical raw materials and convenience in the later stage of biuret extraction are achieved; the purification described hereinbefore is mainly carried out in the present utility model by pulverizing the crude biuret and washing to achieve the object of improving the purity of the biuret.
The utility model also comprises an ammonia absorption tank, wherein the inlet of the ammonia absorption tank is connected with an ammonia pipeline connected with the gas phase outlet at the top of the reaction kettle, and the tail end of the ammonia pipeline extends to the lower part of ammonia absorption liquid in the ammonia absorption tank; the top of the ammonia absorption tank is provided with an exhaust gas discharge pipeline with a first valve, the middle upper part of the ammonia absorption tank is provided with an ammonia absorption liquid supplementing pipeline with a second valve, and the bottom of the ammonia absorption tank is provided with an ammonia absorption liquid discharge pipeline with a third valve.
As a further preferred aspect of the present invention, the biuret pretreatment unit includes a pulverizer for pulverizing the biuret solids, and a bottom outlet of the pulverizer is connected to the circulation washing section through a fourth valve.
As a further preferable mode of the technical scheme, a liquid phase outlet at the bottom of the reaction kettle is connected with an inlet of a pulverizer through a fifth valve, a urea particle feeding pipeline with a valve is arranged at one side of the top of the reaction kettle, and a liquid phase discharge pipeline with a sixth valve is arranged on a liquid phase outlet at the lower part of the reaction kettle.
As a further preferable mode of the technical scheme, the circulating washing part comprises a washing kettle connected with an outlet of a fourth valve, an outlet at the bottom of the washing kettle is connected with a filter through a pump, and a solid phase outlet of the filter is respectively connected with the washing kettle and a drying box.
As a further preferable mode of the technical scheme, stirring motors with stirring pieces are arranged at the tops of the reaction kettle and the washing kettle; one side of the top of the washing kettle is provided with a washing water storage tank and an ethanol storage tank, the washing water storage tank is connected with a liquid inlet of the washing kettle through a seventh valve, and the ethanol storage tank is connected with the liquid inlet of the washing kettle through an eighth valve.
As a further preferred aspect of the present invention, the liquid phase outlet of the filter is connected to the washing liquid discharge pipe via a ninth valve.
According to the device for producing biuret by using the melting method, which is prepared according to the scheme, the direct production of biuret in the form of molten urea is realized by using a reaction kettle for melting urea, and on the basis, the ammonia generated in the pyrolysis process is recovered by arranging an ammonia absorption tank, so that the characteristic of avoiding environmental pollution is achieved; meanwhile, the utility model purifies the crude biuret produced in the form of molten urea by arranging the biuret pretreatment unit, the purification process firstly achieves the aim of improving the purification efficiency by crushing, and then adopts the circulating washing part to carry out circulating washing, so as to achieve the characteristic of convenient operation and control on the premise of saving the purchase cost of corresponding equipment.
Drawings
Fig.1 is a schematic structural view of the present utility model.
In the figure: 1. an ammonia gas absorption tank; 2. a reaction kettle; 3. a pulverizer; 4. a filter; 5. a washing kettle; 6. a drying box; 7. a biuret storage tank; 8. an ammonia gas pipe; 9. a pump; 10. a stirring motor; 11. a washing water storage tank; 12. an ethanol storage tank; 13. a first valve; 14. a second valve; 15. a third valve; 16. a fourth valve; 17. a fifth valve; 18. a sixth valve; 19. a seventh valve; 20. an eighth valve; 21. a ninth valve; 22. urea granule feed line.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Referring to fig. 1, an apparatus for producing biuret by a melt process, the apparatus comprising: a reaction kettle 2 for melting urea, and a biuret pretreatment unit for pulverizing and washing the biuret; a drying box 6 for drying the biuret pretreatment unit; the outlet of the drying box 6 is connected with a biuret storage tank 7. The urea is placed in a reaction kettle 2 for melting, so that the purpose of directly producing biuret is realized, no other chemical substances are added in the process, and convenience is provided for later purification; it should be noted that: the reaction kettle 2 is internally provided with a heating device which can be in the forms of heat conduction oil heating or electric heating, and the like, and the steam is in the prior art and can be directly purchased in the market, so that the heating device is not repeated.
The utility model also comprises an ammonia absorption tank 1, wherein the inlet of the ammonia absorption tank 1 is connected with an ammonia pipeline 8 connected with the gas phase outlet at the top of the reaction kettle 2, and the tail end of the ammonia pipeline 8 extends to the lower part of ammonia absorption liquid in the ammonia absorption tank 1; the top of the ammonia absorption tank 1 is provided with an exhaust gas discharge pipeline with a first valve 13, the middle upper part of the ammonia absorption tank 1 is provided with an ammonia absorption liquid supplementing pipeline with a second valve 14, and the bottom of the ammonia absorption tank 1 is provided with an ammonia absorption liquid discharge pipeline with a third valve 15. According to the utility model, ammonia is generated in the process of melting urea, ammonia generated by urea pyrolysis enters ammonia absorption liquid in the ammonia absorption tank 1 through the ammonia absorption tank 1, so that the ammonia is absorbed, the characteristic of environmental friendliness is achieved, the exhaust gas after absorbing the ammonia is discharged through an exhaust gas discharge pipeline of the first valve 13, when the ammonia content in the absorption liquid reaches a preset threshold value, the exhaust gas can be recovered through the exhaust gas discharge pipeline of the ammonia absorption liquid with the third valve 15, and the ammonia absorption liquid can be water; when the amount of the ammonia gas absorbing liquid in the ammonia gas absorbing tank 1 is insufficient, the ammonia gas absorbing liquid can be supplemented through the ammonia gas absorbing liquid supplementing pipeline with the second valve 14, and the attention is paid to the fact that the liquid level of the ammonia gas absorbing liquid in the ammonia gas absorbing process is higher than the tail end air outlet of the ammonia gas pipeline 8 so as to prevent the ammonia gas from overflowing to cause environmental problems.
Further, the biuret pretreatment unit comprises a pulverizer 3 for pulverizing the biuret solids, and the bottom outlet of the pulverizer 3 is connected to the circulation washing section through a fourth valve 16. According to the utility model, the melt entering the reaction kettle 2 can be solidified into the crude biuret by arranging the pulverizer 3, and the solidified crude biuret is pulverized so as to be effectively washed in a subsequent process.
Further, a bottom liquid phase outlet of the reaction kettle 2 is connected with an inlet of the pulverizer 3 through a fifth valve 17, a urea particle feeding pipeline 22 with a valve is arranged on one side of the top of the reaction kettle 2, and a liquid phase discharge pipeline with a sixth valve 18 is arranged on a liquid phase outlet of the lower part of the reaction kettle 2. The molten liquid can be solidified and crushed in the crusher 3 through the bottom liquid phase outlet of the reaction kettle 2, urea particles can conveniently enter through the urea particle feeding pipeline 22, and emergency discharging can be realized when emergency stopping or unqualified materials occur through the liquid phase discharging pipeline with the sixth valve 18.
Further, the circulating washing part comprises a washing kettle 5 connected with the outlet of a fourth valve 16, the outlet at the bottom of the washing kettle 5 is connected with a filter 4 through a pump 9, and the solid phase outlet of the filter 4 is respectively connected with the washing kettle 5 and a drying box 6. The circulating washing part mainly comprises two pieces of equipment, namely a washing kettle 5 mainly used for washing and a filter 4 for solid-liquid separation, wherein the filter 4 can be used for realizing solid-liquid separation and then can be selected to enter the washing kettle 5 according to actual working conditions to realize circulating washing or enter a drying box 6 to prepare a biuret product.
Further, the tops of the reaction kettle 2 and the washing kettle 5 are respectively provided with a stirring motor 10 with stirring pieces; a washing water storage tank 11 and an ethanol storage tank 12 are arranged on one side of the top of the washing kettle 5, the washing water storage tank 11 is connected with a liquid inlet of the washing kettle 5 through a seventh valve 19, and the ethanol storage tank 12 is connected with the liquid inlet of the washing kettle 5 through an eighth valve 20. The device can meet the requirements of washing water and ethanol washing, and can realize the characteristic that washing water and ethanol washing are sequentially carried out in the same equipment through the cooperation of the circulating washing part; it should be noted that the stirring member includes a stirring shaft connected to the main shaft of the stirring motor 10, and a stirring blade is disposed on the stirring shaft, which is a conventional setting and can be directly purchased in the market, so that a detailed description is omitted.
Further, the liquid phase outlet of the filter 4 is connected to a washing liquid discharge pipe through a ninth valve 21.
The working principle of the utility model is as follows: when the urea particle heating device is used, urea particles enter a reaction kettle 2 through a urea particle feeding pipeline 22 to be heated, a stirring motor 10 is started in the heating process, a stirring piece is rotated to uniformly heat urea, ammonia is released in the urea heating process, enters the bottom of an ammonia absorption tank 1 through an ammonia pipeline 8 and is absorbed by ammonia absorption liquid in the ammonia absorption tank 1, the absorbed impurity gas is discharged through an exhaust gas discharge pipeline with a first valve 13, and when the ammonia absorption liquid reaches a preset threshold value, the ammonia absorption liquid can be discharged and recovered through an ammonia absorption liquid discharge pipeline with a third valve 15; when the ammonia absorption liquid amount in the ammonia absorption tank 1 is insufficient, the ammonia absorption liquid can be supplemented through an ammonia absorption liquid supplementing pipeline with a second valve 14, and the arrangement can avoid the overflow of ammonia to cause environmental pollution; after the urea melt is kept for a certain time, the liquid phase enters a pulverizer 3 through a fifth valve 17 to be solidified, the pulverizer 3 is used for pulverizing after a strand ditch is formed, the pulverized liquid phase enters a circulating washing part to be circularly washed, the circulating washing part is dried in a drying box 6, so that a biuret solid product with the concentration of more than 90% can be obtained, and the biuret solid product enters a biuret storage tank 7 through the drying box 6; the process of the circulating washing part can be that the washing water in the washing water storage tank 11 enters the washing kettle 5 to wash the crushed crude biuret, the crushed crude biuret enters the filter 4 to be filtered after washing, the filtered liquid phase enters a washing liquid discharge pipeline through a ninth valve 21 to be discharged outside, the filtered solid phase enters the washing kettle 5 again, the ethanol in the ethanol storage tank 12 enters the washing kettle 5 to be washed by the ethanol, the ethanol enters the filter 4 again to be filtered after washing, the filtered liquid phase enters the washing liquid discharge pipeline through a ninth valve 21 to be discharged outside, and the filtered solid phase enters the drying box 6. Specifically, the preparation process comprises the following steps: step one: enabling urea particles to enter the reaction kettle 2 through a urea particle feeding pipeline 22 for heating, starting a stirring motor 10 in the heating process, enabling a stirring piece to rotate so as to uniformly heat urea, and keeping the reaction temperature within 155-160 ℃ for 2.5-4.5 h at the temperature; after maintaining the time, the melt enters a pulverizer 3 through a fifth valve 17 to be solidified, so as to produce a biuret solid product with the purity of more than 50%; step two: the urea is heated in the reaction process to release ammonia, the ammonia enters the bottom of the ammonia absorption tank 1 through an ammonia pipeline 8 and is absorbed by ammonia absorption liquid in the ammonia absorption tank 1, the absorbed impurity gas is discharged through an exhaust gas discharge pipeline with a first valve 13, and when the ammonia absorption liquid reaches a preset threshold value, the ammonia can be discharged and recovered through the exhaust gas discharge pipeline with a third valve 15, and the ammonia absorption liquid can be water; When the ammonia absorption liquid amount in the ammonia absorption tank 1 is insufficient, the ammonia absorption liquid can be supplemented through an ammonia absorption liquid supplementing pipeline with a second valve 14, and the arrangement can avoid the overflow of ammonia to cause environmental pollution; step three: the biuret solid product with the purity of more than 50 percent is crushed in a crusher 3, and the biuret solid is crushed to 60 to 400 meshes to obtain solid powder; step four: the solid powder in the third step enters the washing kettle 5, meanwhile, the washing water in the washing water storage tank 11 also enters the washing kettle 5 to wash the solid powder, and the weight ratio of the solid powder to the washing water is 1:4, a step of; step five: the washing water enters a filter 4 for filtering after washing, the filtered liquid phase enters a washing liquid discharge pipeline through a ninth valve 21 for discharge, and the filtered solid phase enters a washing kettle 5 again; Step six: ethanol in the ethanol storage tank 12 enters the washing kettle 5 to wash biuret with ethanol, and the weight ratio of the solid powder to the ethanol is 1:10; step seven: filtering in a filter 4 after washing with ethanol, discharging the filtered liquid phase through a ninth valve 21 into a washing liquid discharge pipeline, drying the filtered solid phase in a drying box 6, obtaining a product with purity of more than 90% after drying, and finally entering a biuret storage tank 7.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An apparatus for producing biuret by a melt process, characterized in that: the device comprises:
a reaction kettle (2) for melting urea,
And a biuret pretreatment unit for pulverizing and washing the biuret;
a drying box (6) for drying the biuret pretreatment unit;
the outlet of the drying box (6) is connected with a biuret storage tank (7).
2. The apparatus for producing biuret by melt process as claimed in claim 1, wherein: also comprises an ammonia absorption tank (1), wherein the inlet of the ammonia absorption tank (1) is connected with an ammonia pipeline (8) connected with the gas phase outlet at the top of the reaction kettle (2),
The tail end of the ammonia gas pipeline (8) extends to the lower part of ammonia gas absorption liquid in the ammonia gas absorption tank (1);
The top of ammonia absorption jar (1) is equipped with the exhaust gas outward-discharging pipeline of taking first valve (13), and the well upper portion of ammonia absorption jar (1) is equipped with the ammonia absorption liquid supply line of taking second valve (14), and the bottom of ammonia absorption jar (1) is equipped with the ammonia absorption liquid outward-discharging pipeline of taking third valve (15).
3. An apparatus for producing biuret by melt process as claimed in claim 1 or 2, characterized in that: the biuret pretreatment unit comprises a pulverizer (3) for pulverizing the biuret solid, and the bottom outlet of the pulverizer (3) is connected with the circulating washing part through a fourth valve (16).
4. A device for producing biuret by melt process as in claim 3, characterized in that: the bottom liquid phase outlet of the reaction kettle (2) is connected with the inlet of the pulverizer (3) through a fifth valve (17), a urea particle feeding pipeline (22) with a valve is arranged on one side of the top of the reaction kettle (2), and a liquid phase discharge pipeline with a sixth valve (18) is arranged on the liquid phase outlet of the lower part of the reaction kettle (2).
5. A device for producing biuret by melt process as in claim 3, characterized in that: the circulating washing part comprises a washing kettle (5) connected with an outlet of a fourth valve (16), an outlet at the bottom of the washing kettle (5) is connected with a filter (4) through a pump (9), and a solid phase outlet of the filter (4) is respectively connected with the washing kettle (5) and a drying box (6).
6. An apparatus for producing biuret by melt process as in claim 5, wherein: the tops of the reaction kettle (2) and the washing kettle (5) are respectively provided with a stirring motor (10) with a stirring piece;
One side of the top of the washing kettle (5) is provided with a washing water storage tank (11) and an ethanol storage tank (12), the washing water storage tank (11) is connected with a liquid inlet of the washing kettle (5) through a seventh valve (19), and the ethanol storage tank (12) is connected with the liquid inlet of the washing kettle (5) through an eighth valve (20).
7. An apparatus for producing biuret by melt process as in claim 5, wherein: the liquid phase outlet of the filter (4) is connected with a washing liquid discharge pipeline through a ninth valve (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322649862.4U CN221230556U (en) | 2023-09-27 | 2023-09-27 | Device for producing biuret by melting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322649862.4U CN221230556U (en) | 2023-09-27 | 2023-09-27 | Device for producing biuret by melting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221230556U true CN221230556U (en) | 2024-06-28 |
Family
ID=91592407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322649862.4U Active CN221230556U (en) | 2023-09-27 | 2023-09-27 | Device for producing biuret by melting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221230556U (en) |
-
2023
- 2023-09-27 CN CN202322649862.4U patent/CN221230556U/en active Active
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