CN112058197B - Process and device for producing cyanamide - Google Patents
Process and device for producing cyanamide Download PDFInfo
- Publication number
- CN112058197B CN112058197B CN202010793857.9A CN202010793857A CN112058197B CN 112058197 B CN112058197 B CN 112058197B CN 202010793857 A CN202010793857 A CN 202010793857A CN 112058197 B CN112058197 B CN 112058197B
- Authority
- CN
- China
- Prior art keywords
- pipe
- kettle body
- reaction kettle
- feeding
- cleaning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/1862—Stationary reactors having moving elements inside placed in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
- B01D33/72—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
- B01F33/811—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles in two or more consecutive, i.e. successive, mixing receptacles or being consecutively arranged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/181—Preventing generation of dust or dirt; Sieves; Filters
- B01F35/187—Preventing generation of dust or dirt; Sieves; Filters using filters in mixers, e.g. during venting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0066—Stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/16—Cyanamide; Salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a process and a device for producing cyanamide, wherein the device for producing cyanamide comprises a feeding device, a hydrolysis reaction kettle, a hydrolysis transfer kettle, a filtering and impurity removing device, an acidification kettle and a stirring mechanism, and the device is used for realizing continuous production mode of cyanamide and accurate control of temperature in the production process, improving production efficiency, reducing manual participation, saving manpower and protecting personal health of staff. In addition, the device is to the cooling water cyclic utilization, can the water economy resource to can in time wash the blowdown to reation kettle inside, guarantee that production goes on continually. The process for producing the dicyandiamide utilizes the hydrolysis reaction kettle to produce, realizes the simultaneous and rapid hydrolysis reaction and decalcification reaction, and accurately controls the reaction temperature, reduces the generation of dicyandiamide as a byproduct in the mass production process, thereby improving the purity and the yield of the dicyandiamide in the later process.
Description
Technical Field
The invention relates to the technical field of cyanamide production, in particular to a cyanamide production process and a cyanamide production device.
Background
The chemical name of the cyanamide is cyanamide, which is called cyanamide for short, and is used for pesticides, medical intermediates, cyanuramide and the like. The cyanamide solution is used as a defoliant for fruit trees and nontoxic insecticide in foreign countries. The crystal cyanamide is mainly used for synthesizing medicines, health-care products and feed additives and synthesizing pesticide intermediates, and has wide application range.
The cyanamide extremely stimulates and corrodes skin, respiratory tract and mucous membrane, skin contact can generate allergy, and red rash appears; inhalation or ingestion causes the face to become intensely red, headache, dizziness, rapid respiration, tachycardia, hypotension and other symptoms, and the symptoms are hidden for 1-2 days.
The conventional cyanamide production device has the following problems: 1. production automation and persistence are not realized, and the labor is needed to feed and discharge according to batches, so that the efficiency is low, and the health of workers is affected; 2. inaccurate temperature control and serious cooling water waste; 3. the interior of the equipment is required to be cleaned periodically by manpower, and the production is required to be stopped, so that the production is influenced; 4. lime nitrogen is easy to agglomerate or block the pipeline in the feeding process. In addition, the dicyandiamide production process has high dicyandiamide content as a byproduct, and the purity and the yield of the dicyandiamide product are affected.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a process and a device for producing cyanamide, so as to realize the continuous and automatic production process of cyanamide, automatically clean equipment, recycle cooling water, reduce the manual participation in the production process, protect the safety and health of production personnel, improve the production efficiency and save water resources.
The invention provides a cyanamide production device, which comprises a feeding device, a hydrolysis reaction kettle, a hydrolysis transfer kettle, a filtering and impurity removing device, an acidification kettle and a stirring mechanism, wherein:
the feeding device comprises a storage mechanism, a feeding mechanism and a vibrating mechanism, wherein the storage mechanism comprises a cylindrical storage hopper and a conical discharging hopper, a stirring mechanism is arranged in the storage hopper, the lower end of the discharging hopper is connected with a gate valve, the top of the storage hopper is sealed and provided with a pressure relief pipe, the pressure relief pipe is provided with a pressure relief valve, and the tail end of the pressure relief pipe is connected with a bag-type dust remover; the feeding mechanism comprises an air conveyor and a feeding pipe, and the tail end of the feeding pipe is communicated with the upper end of the storage hopper; the feeding mechanism comprises a feeder, the feeder is connected with a lower discharge port of the gate valve, the lower discharge port of the feeder is communicated with a transversely installed feeding pipe, a feeding auger is arranged in the feeding pipe, and one end of the feeding auger is connected with a feeding motor; the vibrating mechanism comprises an air compressor, a plurality of first air cannons and at least one second air cannon, wherein the first air cannons are connected with the air compressor, are arranged on the outer walls of the storage hopper and the blanking hopper, and the air outlets of the first air cannons are connected with a first horizontal air outlet pipe and a first inclined air outlet pipe; the second air cannon is arranged on the outer wall of the blanking hopper, the air outlet of the second air cannon is respectively communicated with the blanking hopper and the feeder through a straight pipe, and the tail end of the straight pipe is connected with a second inclined air outlet pipe;
the hydrolysis reaction kettle comprises a reaction kettle body, a reaction kettle cover is arranged on the reaction kettle body, one side of the reaction kettle body is communicated with a feed pipe, the other side of the reaction kettle body is provided with an overflow pipe, the overflow pipe is communicated with a liquid inlet of the hydrolysis transfer kettle, and a slag discharging pipe is arranged at the bottom of the reaction kettle body; a water adding pipe, a gas adding pipe and a stirring mechanism are vertically arranged on the reaction kettle cover;
the filtering and impurity removing device comprises a filtering mechanism, a feeding mechanism and a leaching mechanism, wherein the filtering mechanism comprises a group of conveying rollers and a plurality of driven rollers distributed on the periphery of the conveying rollers, a conveying belt is assembled on the conveying rollers, a liquid collecting belt is assembled outside the conveying belt, liquid collecting tanks are arranged below two sides of the liquid collecting belt, the side parts of the liquid collecting tanks are connected with vacuum pumps through vacuum pipes, the bottom parts of the liquid collecting tanks are connected with liquid collecting pipes, and the liquid collecting pipes are provided with liquid pumps and are communicated with an acidification kettle; a filter cloth is assembled on the driven roller, and the lower surface of the filter cloth is contacted with the upper surface of the liquid collecting belt; the feeding mechanism comprises a feed box arranged above the filter cloth, a mesh screen is horizontally arranged in the feed box, the upper side of the feed box is communicated with a feeding pipe, and the upper end of the feeding pipe is communicated with a liquid outlet of the hydrolysis transfer kettle; the leaching mechanism comprises an overflow groove arranged above the filter cloth, an arc-shaped guide plate is arranged on one side of the overflow groove, water pipe frames are arranged at two ends of the overflow groove, water supporting pipes are arranged on the water pipe frames, water holes are formed in the water supporting pipes, and one ends of the water supporting pipes are communicated with the water main.
Preferably, the bottom of the reaction kettle body is provided with a cleaning mechanism, the cleaning mechanism comprises a group of cleaning scraping plates arranged at the bottom of the reaction kettle, the cleaning scraping plates are connected with a cleaning motor, the bottom of the reaction kettle body is hemispherical, the cleaning scraping plates are arc-shaped, the side wall of the reaction kettle body is provided with a cooling interlayer, and a cooling coil pipe is arranged in the cooling interlayer; the hydrolysis reaction kettle further comprises a temperature control mechanism, the temperature control mechanism comprises a controller, a temperature sensor arranged in the reaction kettle body and a cooling water system communicated with the cooling coil, the cooling water system comprises a cold water tank and a hot water tank, the cold water tank is communicated with a water inlet of the cooling coil and is provided with a water pump on a connecting pipe, the hot water tank is communicated with a water outlet of the cooling coil, the hot water tank is positioned above the cold water tank and is provided with an electromagnetic valve on the connecting pipe of the cold water tank and the hot water tank, and the controller is respectively electrically connected with the temperature sensor, the water pump and the electromagnetic valve.
Preferably, the liquid collecting belt is a corrugated belt, liquid outlet holes are formed in two sides of the liquid collecting belt, the liquid outlet holes are formed above the liquid collecting groove, and the filtering mechanism further comprises a plurality of supporting rollers arranged between the conveying rollers.
Preferably, the filtering and impurity removing device further comprises a cleaning mechanism, a waste liquid recovery mechanism and a slag collecting mechanism, wherein the cleaning mechanism comprises a cleaning tank, the cleaning tank is arranged below the conveying initial end, a cleaning roller is arranged in the cleaning tank, filter cloth is wound on the lower side of the cleaning roller and immersed in cleaning liquid, a group of brush seats are arranged on the upper side of the cleaning tank, cleaning brushes are arranged on the brush seats, and the direction of the brush of each cleaning brush is directed to the surface of the filter cloth; the waste liquid recovery mechanism comprises a waste liquid tank arranged below the filtering mechanism, the bottom of the waste liquid tank is inclined and connected with a return pipe, the other end of the return pipe is communicated with the feeding pipe, and a return pump is arranged on the return pipe; the slag collecting mechanism comprises a slag groove, the slag groove is arranged below the conveying end, a scraping plate is arranged in the slag groove, and a scraping edge of the scraping plate is in surface contact with the filter cloth.
Preferably, the hydrolysis transfer cauldron includes the transfer cauldron body, transfer cauldron body lower extreme fixedly connected with support frame, transfer cauldron body upper end intercommunication is provided with the feed valve, set up the air vent on the transfer cauldron body roof, the outside of air vent be provided with transfer cauldron body fixed connection's connecting cylinder, the logical groove has been seted up on the connecting cylinder, the butt has sealed the pad in the connecting cylinder, sealed upper end fixedly connected with movable plate of pad, the upper end fixedly connected with rack of movable plate, the rack passes logical groove, be connected with the pivot through sealed bearing rotation on the transfer cauldron body roof, equidistance fixedly connected with stirring roller in the pivot, the stirring roller with be connected through drive mechanism between the rack, the last intercommunication of transfer cauldron body is provided with discharge mechanism, discharge mechanism and filling tube intercommunication.
Preferably, the transmission mechanism comprises a side plate fixedly connected with the transfer kettle body, a connecting shaft is rotatably connected with the side plate through a bearing, a gear is fixedly connected with the connecting shaft, the gear is meshed with the rack, a first bevel gear is fixedly connected with the connecting shaft, a second bevel gear is fixedly connected with the rotating shaft, and the first bevel gear is meshed with the second bevel gear; the discharging mechanism comprises a connecting pipe communicated with the lower end of the transfer kettle body, the upper end of the transfer kettle body is fixedly connected with a transfer pump, the connecting pipe is connected with the inlet end of the transfer pump, a valve is arranged on the connecting pipe, the lower end of the transfer kettle body is of a dome structure, and the sealing gasket is a nitrile rubber sealing gasket.
Preferably, the acidification kettle comprises an acidification kettle body, an acidification kettle cover is arranged on an acidification kettle body upper cover, supporting legs are fixed at four corners of the bottom of the acidification kettle body, a storage barrel is arranged in the acidification kettle body, a cyanamide configuration liquid is placed in the storage barrel, a lower annular plate is fixed above the acidification kettle body, an upper annular plate is fixed above the storage barrel, the upper annular plate is placed on the lower annular plate, a stirring mechanism is arranged in the storage barrel, a box body is fixed on one side of the acidification kettle cover, a discharging pipe is connected to one side of the bottom of the box body, one end of the discharging pipe penetrates through the acidification kettle cover and extends into the storage barrel, a cover plate is fixed on one side of the cover plate, an opening is formed in the bottom of the box body, a rotating plate is rotatably connected to the bottom of the box body, a discharging hole is formed in the rotating plate, a rotating rod is fixed above the rotating plate, one end of the rotating rod penetrates through the cover plate and is fixed with a rotating handle, and a bearing is fixed at the contact position of the rotating rod and the cover plate.
Preferably, the limiting holes are formed in the periphery of the lower annular plate, the limiting rods are fixed in the periphery of the lower annular plate, one ends of the limiting rods penetrate through the limiting holes and extend downwards, the handles are fixed on the two sides of the upper annular plate, the handles are fixed on the two sides of the upper side of the acidification kettle cover, and the safety valve is connected to one side of the upper side of the acidification kettle cover.
Preferably, the stirring mechanism comprises a motor support, a stirring motor is arranged on the motor support, a power output end of the motor penetrates through the motor support to be connected with a stirring paddle, and the stirring paddle is arranged on the lower side of the reaction kettle cover.
The invention also provides a cyanamide production process, which comprises the following steps:
(1) Lime nitrogen is sent into a hydrolysis reaction kettle by a feeding device, water is added through a water adding pipe, cyanamide calcium hydroxide and calcium hydroxide are generated by hydrolysis, meanwhile, carbon dioxide is introduced through the water adding pipe to carry out decalcification reaction to generate cyanamide and calcium carbonate, and meanwhile, circulating cooling water is started, and the temperature in the hydrolysis reaction kettle is controlled to be 40-50 ℃;
(2) The liquid obtained by the reaction enters a hydrolysis transfer kettle from an overflow pipe in the hydrolysis reaction kettle in an overflow mode, and stands still for cooling;
(3) Pumping the supernatant into a filtering and impurity removing device for filtering;
(4) And (3) delivering the liquid obtained by filtration to an acidification kettle, and adding phosphoric acid to adjust the pH to 4-6 to obtain a cyanamide solution.
The invention has the beneficial effects that: the device for producing the cyanamide comprises the feeding device, the hydrolysis reaction kettle, the hydrolysis transfer kettle, the filtering and impurity removing device, the acidification kettle and the stirring mechanism, and the device is used for realizing continuous production mode of the cyanamide and accurate control of temperature in the production process, so that the production efficiency can be improved, the manual participation can be reduced, the manpower can be saved, and the personal health of staff can be protected. In addition, the device is to the cooling water cyclic utilization, can the water economy resource to can in time wash the blowdown to reation kettle inside, guarantee that production goes on continually. The process for producing the dicyandiamide utilizes the hydrolysis reaction kettle to produce, realizes the simultaneous and rapid hydrolysis reaction and decalcification reaction, and accurately controls the reaction temperature, reduces the generation of dicyandiamide as a byproduct in the mass production process, thereby improving the purity and the yield of the dicyandiamide in the later process.
Drawings
FIG. 1 is a schematic diagram of a cyanamide production device;
FIG. 2 is a schematic view of the feeding device in FIG. 1;
fig. 3 is a schematic structural diagram of the hydrolysis reaction kettle in fig. 1.
FIG. 4 is a perspective view of the hydrolysis transfer reactor of FIG. 1;
FIG. 5 is a cross-sectional view of FIG. 4;
FIG. 6 is a side view of FIG. 4;
FIG. 7 is an enlarged view of portion A of FIG. 4;
FIG. 8 is a schematic diagram of the filtering and impurity removing apparatus in FIG. 1;
FIG. 9 is an enlarged view of a portion of FIG. 8;
FIG. 10 is an enlarged view of a portion of FIG. 9;
FIG. 11 is a schematic diagram of the structure of the acidification tank of FIG. 1;
FIG. 12 is a top view of FIG. 11;
fig. 13 is an enlarged view of a portion B in fig. 11.
In the figure:
the device comprises a feeding device 1, a storage mechanism 11, a storage hopper 111, a discharging hopper 112, a gate valve 113, a pressure relief pipe 114, a pressure relief valve 115, a bag dust collector 116, a feeding mechanism 12, an air conveyor 121, a feeding pipe 122, a feeding mechanism 13, a feeder 131, a feeding pipe 132, a feeding auger 133, a feeding motor 134, a vibrating mechanism 14, an air compressor 141, a first air cannon 142, a first horizontal air outlet pipe 1421, a first inclined air outlet pipe 1422, a second air cannon 143, a straight pipe 1431 and a second inclined air outlet pipe 1432;
hydrolysis reaction kettle 2, reaction kettle body 21, overflow pipe 211, slag discharging pipe 212, cleaning mechanism 213, cooling interlayer 214, cooling coil 215, cleaning scraper 2131, cleaning motor 2132, reaction kettle cover 22, water adding pipe 221, gas adding pipe 222, temperature control mechanism 23, temperature sensor 231, cooling water system 232, cold water tank 2321, hot water tank 2322, water pump 2323 and electromagnetic valve 2324;
hydrolysis transfer reactor 3, transfer reactor body 31, support frame 32, stirring roller 33, rotary shaft 34, feed valve 35, gear 36, connecting shaft 37, side plate 38, rack 39, through groove 310, moving plate 311, sealing pad 312, vent 313, transfer pump 314, first bevel gear 315, second bevel gear 316, connecting pipe 317, connecting tube 318;
the filtration and impurity removal device 4, the filtration mechanism 41, the transfer roller 411, the driven roller 412, the transfer belt 413, the liquid collecting belt 414, the liquid outlet 4141, the liquid collecting tank 415, the vacuum pipe 416, the vacuum pump 417, the liquid collecting pipe 418, the filter cloth 419, the support roller 410, the charging mechanism 42, the feed tank 421, the mesh screen 422, the charging pipe 423, the rinsing mechanism 43, the overflow tank 431, the arc-shaped guide plate 432, the water pipe rack 433, the branch pipe 434, the water pipe 435, the cleaning mechanism 44, the cleaning tank 441, the cleaning roller 442, the brush seat 443, the cleaning brush 444, the waste liquid recovery mechanism 45, the waste liquid tank 451, the return pipe 452, the return pump 453, the slag collecting mechanism 46, and the waste slag tank 461;
the acidification kettle 5, the acidification kettle body 51, the support legs 52, the acidification kettle cover 53, the storage barrel 54, the upper annular plate 55, the lower annular plate 56, the limiting holes 57, the limiting rods 58, the safety valve 59, the box 510, the discharge pipe 511, the rotary plate 512, the discharge holes 513, the cover plate 514, the rotary rod 515, the rotary handle 516, the bearing 517, the cover handle 518 and the pull handle 519;
stirring mechanism 6, motor support 61, stirring motor 62, stirring rake 63.
Detailed Description
In order to make the technical scheme of the invention easier to understand, the technical scheme of the invention is clearly and completely described by adopting a mode of a specific embodiment with reference to the accompanying drawings.
Example 1:
the utility model provides a cyanamide apparatus for producing, includes material feeding unit 1, hydrolysis reaction kettle 2, hydrolysis transfer kettle 3, filter impurity removing device 4, acidizing cauldron 5 and rabbling mechanism 6, wherein:
the feeding device 1 comprises a storage mechanism 11, a feeding mechanism 12, a feeding mechanism 13 and a vibrating mechanism 14, wherein the storage mechanism 11 comprises a cylindrical storage hopper 111 and a conical discharging hopper 112, a stirring mechanism 6 is arranged in the storage hopper 111, the lower end of the discharging hopper 112 is connected with a gate valve 113, the top of the storage hopper 111 is sealed and provided with a pressure relief pipe 114, the pressure relief pipe 114 is provided with a pressure relief valve 115, and the tail end of the pressure relief pipe 114 is connected with a bag-type dust collector 116; the feeding mechanism 12 comprises an air conveyor 121 and a feeding pipe 122, and the tail end of the feeding pipe 122 is communicated with the upper end of the storage hopper 111; the feeding mechanism 13 comprises a feeder 131, the feeder 131 is connected with a lower discharge port of the gate valve 113, the lower discharge port of the feeder 131 is communicated with a transversely installed feeding pipe 132, a feeding auger 133 is arranged in the feeding pipe 132, and one end of the feeding auger 133 is connected with a feeding motor 134; the rapping mechanism 14 comprises an air compressor 141, a plurality of first air cannons 142 and at least one second air cannon 143, wherein the first air cannons 142 are connected with the air compressor 141, the first air cannons 142 are arranged on the outer walls of the storage hopper 111 and the blanking hopper 112, and the air outlets of the first air cannons 142 are connected with a first horizontal air outlet pipe 1421 and a first inclined air outlet pipe 1422; the second air cannon 143 is arranged on the outer wall of the discharging hopper 112, the air outlet of the second air cannon 143 is respectively communicated with the discharging hopper 112 and the feeder 131 through a straight pipe 1431, and the tail end of the straight pipe 1431 is connected with a second inclined air outlet pipe 1432;
the hydrolysis reaction kettle 2 comprises a reaction kettle body 21, a reaction kettle cover 22 is arranged on the reaction kettle body 21, one side of the reaction kettle body 21 is communicated with a feed pipe 132, the other side of the reaction kettle body is provided with an overflow pipe 211, the overflow pipe 211 is communicated with a liquid inlet of the hydrolysis transfer kettle 3, and a slag discharging pipe 212 is arranged at the bottom of the reaction kettle body 21; the reaction kettle cover 22 is vertically provided with a water adding pipe 221, a gas adding pipe 222 and a stirring mechanism 6;
the filtering and impurity removing device 4 comprises a filtering mechanism 41, a feeding mechanism 42 and a leaching mechanism 43, wherein the filtering mechanism 41 comprises a group of conveying rollers 411 and a plurality of driven rollers 412 distributed on the periphery of the conveying rollers, a conveying belt 413 is assembled on the conveying rollers 411, a liquid collecting belt 414 is assembled outside the conveying belt 413, liquid collecting tanks 415 are arranged below two sides of the liquid collecting belt 414, the side parts of the liquid collecting tanks 415 are connected with a vacuum pump 417 through vacuum pipes 416, the bottoms of the liquid collecting tanks 415 are connected with liquid collecting pipes 418, and the liquid collecting pipes 418 are provided with liquid pumps and are communicated with an acidification kettle 5; a filter cloth 419 is arranged on the driven roller 412, and the lower surface of the filter cloth 419 is contacted with the upper surface of the liquid collecting belt 414; the feeding mechanism 42 comprises a feed box 421 arranged above the filter cloth 419, a mesh screen 422 is horizontally arranged in the feed box 421, the upper side of the feed box 421 is communicated with a feeding pipe 423, and the upper end of the feeding pipe 423 is communicated with a liquid outlet of the hydrolysis transfer kettle 3; the rinsing mechanism 43 comprises an overflow groove 431 arranged above the filter cloth 419, one side of the overflow groove 431 is provided with an arc-shaped guide plate 432, two ends of the overflow groove 431 are provided with a water pipe rack 433, the water pipe rack 433 is provided with a water branch pipe 434, the water branch pipe 434 is provided with water holes, and one end of the water branch pipe 434 is communicated with the water main 435.
The bottom of the reaction kettle body 21 is provided with a cleaning mechanism 213, the cleaning mechanism 213 comprises a group of cleaning scrapers 2131 arranged at the bottom of the reaction kettle, the cleaning scrapers 2131 are connected with a cleaning motor 2132, the bottom of the reaction kettle body 21 is hemispherical, the cleaning scrapers 2131 are arc-shaped, the side wall of the reaction kettle body 21 is provided with a cooling interlayer 214, and the cooling interlayer 214 is internally provided with a cooling coil 215; the hydrolysis reaction kettle 2 further comprises a temperature control mechanism 23, the temperature control mechanism 23 comprises a controller, a temperature sensor 231 arranged in the reaction kettle body 21 and a cooling water system 232 communicated with the cooling coil 215, the cooling water system 232 comprises a cold water tank 2321 and a hot water tank 2322, the cold water tank 2321 is communicated with a water inlet of the cooling coil 215 and is provided with a water pump 2323 on a connecting pipe, the hot water tank 2322 is communicated with a water outlet of the cooling coil 215, the hot water tank 2322 is positioned above the cold water tank 2321, an electromagnetic valve 2324 is arranged on a connecting pipe of the cold water tank 2321 and the hot water tank 2322, and the controller is respectively electrically connected with the temperature sensor 231, the water pump 2323 and the electromagnetic valve 2324.
The liquid collecting belt 414 is a corrugated belt, liquid outlet holes 4141 are formed in two sides of the liquid collecting belt 414, the liquid outlet holes 4141 are located above the liquid collecting groove 415, and the filtering mechanism 41 further comprises a plurality of support rollers 410 arranged between the conveying rollers 411.
The filtering and impurity removing device 4 further comprises a cleaning mechanism 44, a waste liquid recovery mechanism 45 and a slag collecting mechanism 46, wherein the cleaning mechanism 44 comprises a cleaning tank 441, the cleaning tank 441 is arranged below a conveying start end, a cleaning roller 442 is arranged in the cleaning tank 441, a filter cloth 419 is wound on the lower side of the cleaning roller 442 and immersed in cleaning liquid, a group of brush seats 443 are arranged on the upper side of the cleaning tank 441, cleaning brushes 444 are arranged on the brush seats 443, and the brush direction of the cleaning brushes 444 is directed to the surface of the filter cloth 419; the waste liquid recovery mechanism 45 comprises a waste liquid tank 451 arranged below the filtering mechanism 41, the bottom of the waste liquid tank 451 is inclined and connected with a return pipe 452, the other end of the return pipe 452 is communicated with the charging pipe 423, and a return pump 453 is arranged on the return pipe 452; the slag collecting mechanism 46 comprises a slag groove 461, the slag groove 461 is arranged below the conveying end, a scraping plate 462 is arranged in the slag groove 461, and the scraping edge of the scraping plate 462 is in surface contact with the filter cloth 419.
The hydrolysis transfer kettle 3 includes the transfer kettle body 31, transfer kettle body 31 lower extreme fixedly connected with support frame 32, transfer kettle body 31 upper end intercommunication is provided with feed valve 35, set up the air vent 313 on the transfer kettle body 31 roof, the outside of air vent 313 be provided with transfer kettle body 31 fixed connection's connecting cylinder 318, set up logical groove 310 on the connecting cylinder 318, the butt has sealed pad 312 in the connecting cylinder 318, sealed upper end fixedly connected with movable plate 311 of pad 312, movable plate 311's upper end fixedly connected with rack 39, rack 39 passes logical groove 310, be connected with pivot 34 through sealed bearing rotation on the transfer kettle body 31 roof, equidistance fixedly connected with stirring roller 33 in the pivot 34, stirring roller 33 with be connected through drive mechanism between the rack 39, the last intercommunication of transfer kettle body 31 is provided with discharge mechanism, discharge mechanism and feed tube 423 intercommunication.
The transmission mechanism comprises a side plate 38 fixedly connected with the transfer kettle body 31, a connecting shaft 37 is rotatably connected with the side plate 38 through a bearing, a gear 36 is fixedly connected with the connecting shaft 37, the gear 36 is meshed with the rack 39, a first bevel gear 315 is fixedly connected with the connecting shaft 37, a second bevel gear 316 is fixedly connected with the rotating shaft 34, and the first bevel gear 315 is meshed with the second bevel gear 316; the discharging mechanism comprises a connecting pipe 317 which is communicated with the lower end of the transfer kettle body 31, the upper end of the transfer kettle body 31 is fixedly connected with a transfer pump 314, the connecting pipe 317 is connected with the inlet end of the transfer pump 314, a valve is arranged on the connecting pipe 317, the lower end of the transfer kettle body 31 is in a dome structure, and the sealing gasket 312 is a nitrile rubber sealing gasket.
The acidification kettle 5 comprises an acidification kettle body 51, an acidification kettle cover 53 is arranged on the upper cover of the acidification kettle body 51, supporting legs 52 are fixed at four corners of the bottom of the acidification kettle body 51, a storage barrel 54 is arranged in the acidification kettle body 51, a cyanamide configuration liquid is placed in the storage barrel 54, a lower annular plate 56 is fixed above the acidification kettle body 51, an upper annular plate 55 is fixed above the storage barrel 54, the upper annular plate 55 is placed on the lower annular plate 56, a stirring mechanism 6 is arranged in the storage barrel 54, a box 510 is fixed on one side of the acidification kettle cover 53, a discharging pipe 511 is connected on one side of the bottom of the box 510, one end of the discharging pipe 511 penetrates through the acidification kettle cover 53 and extends into the storage barrel 54, a cover plate 514 is fixed on one side of the cover plate 514, a rotating plate 512 is rotatably connected to the bottom in the box 510, a rotating rod hole 513 is formed in the rotating plate 512, one end 515 is fixed on the rotating plate 512, and the other end 515 penetrates through the cover plate 514 and is fixedly arranged at the position of the rotating rod.
Limiting holes 57 are formed in the periphery of the lower annular plate 56, limiting rods 58 are fixed in the periphery of the lower side of the upper annular plate 55, one end of each limiting rod 58 penetrates through each limiting hole 57 and extends downwards, pull handles 519 are fixed on two sides above the upper annular plate 55, cover handles 518 are fixed on two sides above the acidification kettle cover 53, and a safety valve 59 is connected to one side above the acidification kettle cover 53.
The stirring mechanism 6 comprises a motor support 61, a stirring motor 62 is arranged on the motor support 61, the power output end of the motor penetrates through the motor support 61 to be connected with a stirring paddle 63, and the stirring paddle 63 is arranged on the lower side of the reaction kettle cover 22.
It should be noted that the embodiments described herein are only some embodiments of the present invention, not all the implementation manners of the present invention, and the embodiments are only exemplary, and are only used for providing a more visual and clear way of understanding the present disclosure, not limiting the technical solution described in the present invention. All other embodiments, and other simple alternatives and variations of the inventive solution, which would occur to a person skilled in the art without departing from the inventive concept, are within the scope of the invention.
Claims (6)
1. The utility model provides a dicyandiamide apparatus for producing, its characterized in that includes material feeding unit (1), hydrolysis reaction kettle (2), hydrolysis transfer cauldron (3), filtration edulcoration device (4), acidizing cauldron (5) and rabbling mechanism (6), wherein:
the feeding device (1) comprises a storage mechanism (11), a feeding mechanism (12), a feeding mechanism (13) and a vibrating mechanism (14), wherein the storage mechanism (11) comprises a cylindrical storage hopper (111) and a conical discharging hopper (112), a stirring mechanism (6) is arranged in the storage hopper (111), the lower end of the discharging hopper (112) is connected with a gate valve (113), the top of the storage hopper (111) is sealed and provided with a pressure relief pipe (114), the pressure relief pipe (114) is provided with a pressure relief valve (115), and the tail end of the pressure relief pipe (114) is connected with a bag-type dust remover (116); the feeding mechanism (12) comprises an air conveyor (121) and a feeding pipe (122), and the tail end of the feeding pipe (122) is communicated with the upper end of the storage hopper (111); the feeding mechanism (13) comprises a feeder (131), the feeder (131) is connected with a lower discharge hole of the gate valve (113), the lower discharge hole of the feeder (131) is communicated with a transversely installed feeding pipe (132), a feeding auger (133) is arranged in the feeding pipe (132), and one end of the feeding auger (133) is connected with a feeding motor (134); the vibrating mechanism (14) comprises an air compressor (141), a plurality of first air cannons (142) and at least one second air cannon (143) which are connected with the air compressor (141), the first air cannons (142) are arranged on the outer walls of the storage hopper (111) and the blanking hopper (112), and an air outlet of the first air cannons (142) is connected with a first horizontal air outlet pipe (1421) and a first inclined air outlet pipe (1422); the second air cannon (143) is arranged on the outer wall of the blanking hopper (112), the air outlet of the second air cannon (143) is respectively communicated with the blanking hopper (112) and the feeder (131) through a straight pipe (1431), and the tail end of the straight pipe (1431) is connected with a second inclined air outlet pipe (1432);
the hydrolysis reaction kettle (2) comprises a reaction kettle body (21), a reaction kettle cover (22) is arranged on the reaction kettle body (21), one side of the reaction kettle body (21) is communicated with a feed pipe (132), the other side of the reaction kettle body is provided with an overflow pipe (211), the overflow pipe (211) is communicated with a liquid inlet of the hydrolysis transfer kettle (3), and a slag discharging pipe (212) is arranged at the bottom of the reaction kettle body (21); a water adding pipe (221), a gas adding pipe (222) and a stirring mechanism (6) are vertically arranged on the reaction kettle cover (22);
the filtering and impurity removing device (4) comprises a filtering mechanism (41), a feeding mechanism (42) and a leaching mechanism (43), wherein the filtering mechanism (41) comprises a group of conveying rollers (411) and a plurality of driven rollers (412) distributed on the periphery of the conveying rollers, a conveying belt (413) is assembled on the conveying rollers (411), a liquid collecting belt (414) is assembled outside the conveying belt (413), liquid collecting tanks (415) are arranged below two sides of the liquid collecting belt (414), the side parts of the liquid collecting tanks (415) are connected with a vacuum pump (417) through vacuum tubes (416), liquid collecting pipes (418) are connected to the bottoms of the liquid collecting tanks (415), and liquid pumps are arranged on the liquid collecting pipes (418) and are communicated with an acidification kettle (5); a filter cloth (419) is assembled on the driven roller (412), and the lower surface of the filter cloth (419) is contacted with the upper surface of the liquid collecting belt (414); the feeding mechanism (42) comprises a feed box (421) arranged above the filter cloth (419), a mesh screen (422) is horizontally arranged in the feed box (421), the upper side of the feed box (421) is communicated with a feeding pipe (423), and the upper end of the feeding pipe (423) is communicated with a liquid outlet of the hydrolysis transfer kettle (3); the leaching mechanism (43) comprises an overflow groove (431) arranged above the filter cloth (419), one side of the overflow groove (431) is provided with an arc-shaped guide plate (432), two ends of the overflow groove (431) are provided with a water pipe rack (433), the water pipe rack (433) is provided with a water branch pipe (434), the water branch pipe (434) is provided with a water hole, and one end of the water branch pipe (434) is communicated with the water main (435);
the reaction kettle comprises a reaction kettle body (21), and is characterized in that a cleaning mechanism (213) is arranged at the bottom of the reaction kettle body, the cleaning mechanism (213) comprises a group of cleaning scrapers (2131) arranged at the bottom of the reaction kettle, the cleaning scrapers (2131) are connected with a cleaning motor (2132), the bottom of the reaction kettle body (21) is hemispherical, the cleaning scrapers (2131) are arc-shaped, a cooling interlayer (214) is arranged on the side wall of the reaction kettle body (21), and a cooling coil (215) is arranged in the cooling interlayer (214); the hydrolysis reaction kettle (2) further comprises a temperature control mechanism (23), the temperature control mechanism (23) comprises a controller, a temperature sensor (231) arranged in the reaction kettle body (21) and a cooling water system (232) communicated with the cooling coil (215), the cooling water system (232) comprises a cold water tank (2321) and a hot water tank (2322), the cold water tank (2321) is communicated with a water inlet of the cooling coil (215) and is provided with a water pump (2323) on a connecting pipeline, the hot water tank (2322) is communicated with a water outlet of the cooling coil (215), the hot water tank (2322) is arranged above the cold water tank (2321), and an electromagnetic valve (2324) is arranged on a connecting pipeline of the cold water tank, the temperature sensor (231), the water pump (2323) and the electromagnetic valve (2324) are electrically connected with the controller respectively;
the hydrolysis transfer kettle (3) comprises a transfer kettle body (31), a support frame (32) is fixedly connected to the lower end of the transfer kettle body (31), a feed valve (35) is arranged at the upper end of the transfer kettle body (31) in a communicating mode, a vent hole (313) is formed in the top wall of the transfer kettle body (31), a connecting cylinder (318) fixedly connected with the transfer kettle body (31) is arranged on the outer side of the vent hole (313), a through groove (310) is formed in the connecting cylinder (318), a sealing gasket (312) is abutted in the connecting cylinder (318), a movable plate (311) is fixedly connected to the upper end of the sealing gasket (312), a rack (39) is fixedly connected to the upper end of the movable plate (311), the rack (39) penetrates through the through groove (310), a rotating shaft (34) is rotatably connected to the top wall of the transfer kettle body (31) through a sealing bearing, a plurality of stirring rollers (33) are fixedly connected to the rotating shaft (34) at equal distances, the stirring rollers (33) are connected with the rack (39) through a transmission mechanism, and the upper end of the rack (39) is communicated with a feeding mechanism (423);
the transmission mechanism comprises a side plate (38) fixedly connected with the transfer kettle body (31), a connecting shaft (37) is rotatably connected to the side plate (38) through a bearing, a gear (36) is fixedly connected to the connecting shaft (37), the gear (36) is meshed with the rack (39), a first bevel gear (315) is fixedly connected to the connecting shaft (37), a second bevel gear (316) is fixedly connected to the rotating shaft (34), and the first bevel gear (315) is meshed with the second bevel gear (316); the discharging mechanism comprises a connecting pipe (317) communicated with the lower end of the transfer kettle body (31), the upper end of the transfer kettle body (31) is fixedly connected with a transfer pump (314), the connecting pipe (317) is connected with the inlet end of the transfer pump (314), a valve is arranged on the connecting pipe (317), the lower end of the transfer kettle body (31) is of a dome structure, and the sealing gasket (312) is a nitrile rubber sealing gasket.
2. The cyanamide production device of claim 1, wherein the liquid collecting belt (414) is a corrugated belt, liquid outlet holes (4141) are arranged on two sides of the liquid collecting belt (414), the liquid outlet holes (4141) are positioned above the liquid collecting tank (415), and the filtering mechanism (41) further comprises a plurality of supporting rollers (410) arranged between the conveying rollers (411).
3. The cyanamide production device according to claim 1, wherein the filtering and impurity removing device (4) further comprises a cleaning mechanism (44), a waste liquid recovery mechanism (45) and a slag collecting mechanism (46), the cleaning mechanism (44) comprises a cleaning tank (441), the cleaning tank (441) is arranged below a conveying start end, a cleaning roller (442) is arranged in the cleaning tank (441), a filter cloth (419) is wound on the lower side of the cleaning roller (442) and immersed in the cleaning liquid, a group of brush holders (443) are arranged on the upper side of the cleaning tank (441), cleaning brushes (444) are arranged on the brush holders (443), and the brush direction of the cleaning brushes (444) is directed to the surface of the filter cloth (419); the waste liquid recovery mechanism (45) comprises a waste liquid tank (451) arranged below the filtering mechanism (41), the bottom of the waste liquid tank (451) is inclined and connected with a return pipe (452), the other end of the return pipe (452) is communicated with the feeding pipe (423), and a return pump (453) is arranged on the return pipe (452); the slag collecting mechanism (46) comprises a slag groove (461), the slag groove (461) is arranged below the conveying end, a scraping plate (462) is arranged in the slag groove (461), and the scraping edge of the scraping plate (462) is in surface contact with the filter cloth (419).
4. The cyanamide production device of claim 1, wherein the acidification kettle (5) comprises an acidification kettle body (51), an acidification kettle cover (53) is arranged on an upper cover of the acidification kettle body (51), supporting legs (52) are fixed at four corners of the bottom of the acidification kettle body (51), a storage barrel (54) is arranged in the acidification kettle body (51), a cyanamide configuration liquid is placed in the storage barrel (54), a lower annular plate (56) is fixed above the acidification kettle body (51), an upper annular plate (55) is fixed above the storage barrel (54), the upper annular plate (55) is placed on the lower annular plate (56), a stirring mechanism (6) is arranged in the storage barrel (54), a box body (510) is fixed on one side above the acidification kettle cover (53), a discharge pipe (511) is connected on one side of the bottom of the box body (510), one end of the discharge pipe (511) penetrates through the acidification kettle cover (53) and extends into the storage barrel (54), an upper annular plate (55) is fixed on the box body (510), a rotary plate (512) is arranged on one side of the rotary plate (512), one end of the rotating rod (515) penetrates through the cover plate (514) and is fixedly provided with a rotating handle (516), and a bearing (517) is fixed at the contact position of the rotating rod (515) and the cover plate (514).
5. The cyanamide production device of claim 4, wherein limiting holes (57) are formed in the periphery of the lower annular plate (56), limiting rods (58) are fixed in the periphery of the lower side of the upper annular plate (55), one ends of the limiting rods (58) penetrate through the limiting holes (57) and extend downwards, pull handles (519) are fixed on two sides above the upper annular plate (55), cover handles (518) are fixed on two sides above the acidification kettle cover (53), and a safety valve (59) is connected to one side above the acidification kettle cover (53).
6. The cyanamide production device of claim 1, wherein the stirring mechanism (6) comprises a motor support (61), a stirring motor (62) is arranged on the motor support (61), a power output end of the motor passes through the motor support (61) to be connected with a stirring paddle (63), and the stirring paddle (63) is arranged on the lower side of the reaction kettle cover (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793857.9A CN112058197B (en) | 2020-08-10 | 2020-08-10 | Process and device for producing cyanamide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793857.9A CN112058197B (en) | 2020-08-10 | 2020-08-10 | Process and device for producing cyanamide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112058197A CN112058197A (en) | 2020-12-11 |
| CN112058197B true CN112058197B (en) | 2023-08-08 |
Family
ID=73660988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010793857.9A Active CN112058197B (en) | 2020-08-10 | 2020-08-10 | Process and device for producing cyanamide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112058197B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1149474A (en) * | 1997-07-30 | 1999-02-23 | Furukawa Electric Co Ltd:The | Slinging device of flat object, and manufacturing and storing device for metallic wire coil |
| CN2614768Y (en) * | 2003-04-09 | 2004-05-12 | 李根林 | Continuous Horizontal Vacuum Belt Filter |
| CN101016151A (en) * | 2006-08-08 | 2007-08-15 | 芮海平 | Method of preparing cyanamide aqueous solution and dicyandiamide and coproducing carbon and calcium carbonate by calcium cyanamide |
| CN202098875U (en) * | 2011-05-03 | 2012-01-04 | 贝内克一长顺汽车内饰材料（张家港）有限公司 | Feeding device of PVC-pulping reaction pot for auto-inner ornament material |
| CN106110735A (en) * | 2016-08-18 | 2016-11-16 | 尚川（北京）水务有限公司 | A kind of liquid impurity segregation apparatus |
| CN110606496A (en) * | 2019-10-31 | 2019-12-24 | 山东益丰生化环保股份有限公司 | Method for continuously producing cyanamide |
| CN209997592U (en) * | 2019-05-28 | 2020-01-31 | 淮北师范大学 | bio-organic fertilizer granulator |
| CN212632700U (en) * | 2020-08-10 | 2021-03-02 | 宁夏奥斯化工有限公司 | Cyanamide apparatus for producing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040028505A1 (en) * | 2002-06-07 | 2004-02-12 | Bilbrey Robert A. | Document tape binding system with automatic tape feed, tape indicia sensing, spine printing method and post-bind automation mechanisms |
-
2020
- 2020-08-10 CN CN202010793857.9A patent/CN112058197B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1149474A (en) * | 1997-07-30 | 1999-02-23 | Furukawa Electric Co Ltd:The | Slinging device of flat object, and manufacturing and storing device for metallic wire coil |
| CN2614768Y (en) * | 2003-04-09 | 2004-05-12 | 李根林 | Continuous Horizontal Vacuum Belt Filter |
| CN101016151A (en) * | 2006-08-08 | 2007-08-15 | 芮海平 | Method of preparing cyanamide aqueous solution and dicyandiamide and coproducing carbon and calcium carbonate by calcium cyanamide |
| CN202098875U (en) * | 2011-05-03 | 2012-01-04 | 贝内克一长顺汽车内饰材料（张家港）有限公司 | Feeding device of PVC-pulping reaction pot for auto-inner ornament material |
| CN106110735A (en) * | 2016-08-18 | 2016-11-16 | 尚川（北京）水务有限公司 | A kind of liquid impurity segregation apparatus |
| CN209997592U (en) * | 2019-05-28 | 2020-01-31 | 淮北师范大学 | bio-organic fertilizer granulator |
| CN110606496A (en) * | 2019-10-31 | 2019-12-24 | 山东益丰生化环保股份有限公司 | Method for continuously producing cyanamide |
| CN212632700U (en) * | 2020-08-10 | 2021-03-02 | 宁夏奥斯化工有限公司 | Cyanamide apparatus for producing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112058197A (en) | 2020-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212632700U (en) | Cyanamide apparatus for producing | |
| CN216236762U (en) | Breed fermenting installation for liquid manure with spray structure | |
| CN115722154A (en) | Crotonic acid production system and technology | |
| CN112058197B (en) | Process and device for producing cyanamide | |
| CN203315784U (en) | Scraper crystallization separator | |
| CN213784104U (en) | Wheat is planted medicament and is mixed kind of a device | |
| CN114774482B (en) | Zinc gluconate solution production process and production line thereof | |
| CN213127909U (en) | Fruit can processing alkali removing machine | |
| CN115417552A (en) | Chemical industry brine concentration equipment and method | |
| CN213556595U (en) | Thermal technology device for polydextrose production | |
| CN212941509U (en) | Reduced pressure concentration device for metoprolol production | |
| CN214973961U (en) | Potassium citrate production is with high-efficient neutralization apparatus | |
| CN108511772A (en) | Chemical method for disposing waste dry battery system and waste dry battery treatment method | |
| CN211713060U (en) | Traditional chinese medicine dregs of a decoction fermentation cylinder | |
| CN112624830A (en) | Can prevent expanded organic fertilizer fermenting installation | |
| CN207324605U (en) | A kind of liquid distilled from honeysuckle flowers or lotus leaves water production device with automatic fitration | |
| CN213492085U (en) | Iodine crystallizer for iodine refining | |
| CN207357164U (en) | A kind of potassium nitrate reactor off-gas recycling and processing device | |
| CN112275036B (en) | Be used for refrigerant production process to gather by-product splitter | |
| CN217997096U (en) | High-efficient clarification plant of high-quality tea seed oil degrease | |
| CN216825843U (en) | Energy consumption monitoring and collecting system of water treatment system | |
| CN218588136U (en) | Instantaneous sterilization device is used in preparation of fruit juice ferment beverage | |
| CN219722903U (en) | A hot reation kettle for lipidization essence preparation | |
| CN113415791B (en) | Device and method for recovering extractant in production of monopotassium phosphate by wet-process phosphoric acid extraction | |
| CN216337011U (en) | Acid-base waste water neutralization treatment equipment of power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |