CN1187480A - Process of co-producing sulfonyl phosphate potassium fertilizer in superphosphate equipment - Google Patents

Process of co-producing sulfonyl phosphate potassium fertilizer in superphosphate equipment Download PDF

Info

Publication number
CN1187480A
CN1187480A CN97101513A CN97101513A CN1187480A CN 1187480 A CN1187480 A CN 1187480A CN 97101513 A CN97101513 A CN 97101513A CN 97101513 A CN97101513 A CN 97101513A CN 1187480 A CN1187480 A CN 1187480A
Authority
CN
China
Prior art keywords
calcium superphosphate
potassium fertilizer
fertilizer
superphosphate
kcl
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.)
Granted
Application number
CN97101513A
Other languages
Chinese (zh)
Other versions
CN1088447C (en
Inventor
白霜叶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phosphate Fertilizer Plant Honghe Hani And Y Nationality Autonomous Prefecture
Original Assignee
Phosphate Fertilizer Plant Honghe Hani And Y Nationality Autonomous Prefecture
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Phosphate Fertilizer Plant Honghe Hani And Y Nationality Autonomous Prefecture filed Critical Phosphate Fertilizer Plant Honghe Hani And Y Nationality Autonomous Prefecture
Priority to CN97101513A priority Critical patent/CN1088447C/en
Publication of CN1187480A publication Critical patent/CN1187480A/en
Application granted granted Critical
Publication of CN1088447C publication Critical patent/CN1088447C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
    • C05B1/02—Superphosphates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fertilizers (AREA)

Abstract

A process for joint producing of S-base P-K fertilizer with the apparatus for preparing calcium super phosphate features that based on the apparatus to prepare ordinary calcium, KCl, H2SO4 and phosphorus ore powder are used as raw materials to directly produce S-base P-K fertilizer and unaged ordinary calcium. Its advantages include no use of phosphoric acid, synthetic ammonia and urea, short technological route, low cost and multiple elements (S, Ca, Mg, etc.) contained in fertilizer.

Description

Process for co-producing sulfur-based phosphorus-potassium fertilizer by calcium superphosphate device
The invention belongs to a process for coproducing sulfur-based phosphorus-potassium fertilizer on the existing calcium superphosphate production device.
The invention patent gazette at 11/10/1993 discloses a patent application with the application number of 93111207, namely a production method of a potassium sulfate type ternary compound fertilizer. The technical scheme disclosed by the prior art is as follows: partial conversion equipment and auxiliary equipment are added on the ammonium phosphate device, and potassium sulfate ternary compound fertilizer is produced by using potassium chloride conversion method and hydrochloric acid is by-produced. The scheme has the advantages of low investment and quick response to small ammonium phosphate plants, thereby having certain practicability, and the defects of large investment for construction, difficult operation of a phosphoric acid device and a synthetic ammonia device, relatively large one-time investment, high treatment cost of a large amount of phosphogypsum discharged in the production process of byproduct hydrochloric acid and phosphoric acid, single used phosphate fertilizer element, lack of elements such as sulfur, calcium, magnesium and the like in the product and unfavorable balance fertilization in agriculture.
The invention aims to provide a process for co-producing sulfur-based phosphorus-potassium fertilizer rich in various elements such as sulfur, calcium, magnesium and the like without synthesizing basic raw materials such as ammonia, phosphoric acid and the like on the conventional common calcium production device and simultaneously utilizing all hydrochloric acid, so as to overcome the defects of the prior art.
The process provided by the invention is characterized by comprising the following steps:
(1)adding KCl with H2SO4Metathesis to KHSO4A solution;
(2) KHSO is mixed in a calcium superphosphate mixing system4Reacting with ground phosphate rock to generate K2SO4；
(3) Subjecting the obtained K to2SO4And (5) performing curing processing.
In the preparation of KHSO4HCl gas generated in the process is made into hydrochloric acid with 31 percent of concentration through an absorption system.
The hydrochloric acid is prepared into non-cured common calcium by adopting a secondary acid adding process, namely, the primary acid adding process, the secondary sulfuric acid adding process and the primary ore adding process through another mixing system.
The fluorine gas escaped in the process is uniformly recovered into fluosilicic acid by the original common calcium superphosphate fluorine absorption system.
Metathesis to KHSO4The purity of KCl is required to be more than or equal to 60 percent of concentrated KHSO in the process4The addition ratio of H is required to be more than or equal to 92 percent2SO4KCl is 1.5-2.5, and the preparation is carried out in a reaction kettle.
The reaction temperature is 100 +/-5 ℃, and a proper amount of antifoaming agent is added.
The obtained KHSO4After the solution is adjusted to a proper temperature and concentration, the solution is continuously pumped into a mixing pot to react with the ground phosphate rock to obtain a product, the product enters a formation belt, and the product is cured to obtain the powdery sulfur-based phosphorus-potassium fertilizer.
The chemical reaction formula of each step is as follows:
the prepared 31 percent concentrated hydrochloric acid enters a storage tank, is metered by a pump and is pumped into a mixer to react with the ground phosphate rock, and is further added with sulfuric acid for reaction and then is formed into a belt to enter a curing warehouse for curing for 1 to 2 days, thus obtaining the finished common superphosphate. The chemical reaction formula is as follows:
the invention utilizes the existing common calcium production device to realize the process for producing the sulfur-based phosphorus-potassium fertilizer and the non-cured common calcium by taking potassium chloride, ground phosphate rock and sulfuric acid as raw materials. The invention directly takes the ground phosphate rock as the phosphorus source, overcomes the defects that the phosphorus source which is phosphoric acid in the prior art has high price, does not contain elements such as sulfur, calcium, magnesium and the like, and affects the balanced fertilization of agriculture, and simultaneously avoids the problem of treating the phosphorus stone discharged in the production process of the phosphoric acid. In addition, the invention realizes continuous operation of potassium bisulfate preparation, has stable process and strong adaptability, can be implemented on various calcium superphosphate devices, and has low investment and quick response.
The invention is further illustrated by the following examples.
Examples of the invention
The method is characterized in that a potassium bisulfate preparation and hydrogen chloride absorption system and a salt production non-curing ordinary calcium superphosphate mixing system are additionally arranged on a 10-kiloton/year ordinary calcium superphosphate plant in a Yunnan Honghe phosphate fertilizer factory. The former adopts 2 stands by 5M3A glass lining reaction kettle, a corresponding bucket elevator, a metering belt metering pump and other continuous feeding devices. The latter comprises a hydrochloric acid circulation tank and a finished product tank, and is matched with a hydrochloric acid circulation absorption pump feeding pump and 2 15M feed pumps2The graphite falling film absorber comprises a spiral flow plate absorption tower, a glass fan and the like.
When the sulfur-based phosphorus potassium fertilizer and the non-cured common calcium superphosphate are produced by mixing phosphorite and imported potassium chloride in garlic and Jiangchuan province in Yunnan, the raw material property analysis and the product economic index are respectively shown in tables 1-4.
TABLE 1 main quality index (W%) of phosphorus ore (mixed ore)
Index (I) P2O5 CaO Al2O3 Fe2O3 MgO CO2 F Burn and loss
Content (wt.) 29.85 40.04 1.96 1.23 0.48 1.32 2.58 2.32
TABLE 2 Main quality indices of potassium chloride and sulfuric acid
Name of raw materials Component (%) Appearance of the product
KCl H2O H2SO4
Potassium chloride 95.28 1.26 White or brick red fine crystal
Sulfuric acid 93.25
TABLE 3 economic and technical indexes of S-based P-K fertilizer
Index (I) Serial number Raw material dosage ratio (W%) Potassium chloride, sulfuric acid and powdered rock phosphate All-phosphorus Available phosphorus Free acid Moisture content Conversion of phosphorus K2Content of O Chlorine content
1 1.00∶1.86∶1.91 12.58 12.02 7.13 6.54 95.55 12.01 0.48
2 1.00∶1.86∶2.00 12.82 12.36 7.80 6.73 96.41 11.24 0.35
3 1.00∶2.14∶2.62 14.30 13.52 5.51 5.15 94.54 9.76 0.40
4 1.00∶2.32∶2.90 14.60 13.87 6.80 5.49 95.00 8.51 0.44
Remarking: potassium chloride was measured as 100% H, sulfuric acid was measured as physical quantity2SO4And measuring the ground phosphate rock by a material object.
TABLE 4 economic and technical index of non-aged superphosphate
Time of flight Workshop Test number Index name 1 2 3 4 5 6
Fresh food Calcium carbonate Total phosphorus (P)2O5) ％ 17.08 17.46 16.60 15.45 15.84 15.56
Available phosphorus (P)2O5) ％ 15.96 15.15 15.24 14.63 14.15 14.29
Free high acid% 7.15 7.96 6.26 8.68 5.84 5.10
Conversion rate% 90.27 89.65 91.81 94.69 89.33 91.84
II Sky Rear end Total phosphorus (P)2O5) ％ 18.35 17.808 16.76 17.74 18.28 18.77
Available phosphorus (P)2O5) ％ 17.26 17.101 16.23 17.49 17.59 17.63
Free acid% 4.27 3.8617 5.31 6.17 4.49 2.51
Chloride ion (Cl)-) ％ 5.21 5.943. 8.67 9.46 9.38 9.04
Water content (H)2O) ％ 16.73 16.005 18.19 14.28 12.72 13.98
Conversion rate% 94.06 96.07 96.84 98.59 96.22 93.93
As can be seen from Table 3, the total nutrient (P2O5+ K2O) of the sulfur-based phosphorus-potassium fertilizer product produced by the process is 23-25%, and is 5-7 more nutrients than calcium superphosphate; the phosphorus conversion rate is generally more than 94 percent, and the requirement of the calcium superphosphate index is met; the content of chloride is less than 1%, and is lower than the chloric standard (Cl&lt 1.5%) of high-grade potassium sulfate for agricultural use, and its yield is greater than 97%. It is worth mentioning that under the same free acid and moisture content, the appearance quality is obviously better than that of the calcium superphosphate, and the caking phenomenon of the calcium superphosphate is basically avoided.
From table 4, it can be seen that the index of the calcium superphosphate is completely above the first grade calcium superphosphate after two days of curing, and the ordinary process needs to cure for 70 days, thus fully embodying the non-curing characteristic of the invention.

Claims (4)

1. A process for co-producing sulfur-based phosphorus-potassium fertilizer by a calcium superphosphate device is characterized by comprising the following steps:
(1) adding KCl with H2SO4Metathesis to KHSO4A solution;
(2) KHSO4 is reacted with ground phosphate rock in a calcium superphosphate mixing system to generate K2SO4；
(3) Subjecting the obtained K to2SO4And (5) performing curing processing.
2. The process for co-producing sulfur-based phosphorus potassium fertilizer by using the calcium superphosphate device as claimed in claim 1, wherein the KHSO is prepared4HCl gas generated in the process is made into hydrochloric acid with 31 percent of concentration through an absorption system.
3. The process for co-producing sulfur-based phosphorus potassium fertilizer by using a calcium superphosphate device as claimed in claim 1, wherein the obtained hydrochloric acid is used for producing non-aged calcium superphosphate by adopting a secondary acid adding process and a primary ore adding process through another mixing system.
4. The process for the co-production of sulfur-based phosphorus-potassium fertilizer by the calcium superphosphate plant as claimed in claim 1, wherein the double decomposition is used for the preparation of KHSO4The purity of KCl in the process is required to be more than or equal to 60 percent, and H2SO4The addition ratio of H is required to be more than or equal to 92 percent2SO4KCl is 1.5-2.5 and its reaction temp is 100 +/-5 deg.C.
CN97101513A 1997-01-10 1997-01-10 Process of co-producing sulfonyl phosphate potassium fertilizer in superphosphate equipment Expired - Fee Related CN1088447C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN97101513A CN1088447C (en) 1997-01-10 1997-01-10 Process of co-producing sulfonyl phosphate potassium fertilizer in superphosphate equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN97101513A CN1088447C (en) 1997-01-10 1997-01-10 Process of co-producing sulfonyl phosphate potassium fertilizer in superphosphate equipment

Publications (2)

Publication Number Publication Date
CN1187480A true CN1187480A (en) 1998-07-15
CN1088447C CN1088447C (en) 2002-07-31

Family

ID=5165789

Family Applications (1)

Application Number Title Priority Date Filing Date
CN97101513A Expired - Fee Related CN1088447C (en) 1997-01-10 1997-01-10 Process of co-producing sulfonyl phosphate potassium fertilizer in superphosphate equipment

Country Status (1)

Country Link
CN (1) CN1088447C (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85102377A (en) * 1985-04-01 1986-09-17 成都科技大学 With phosphorus ore, sylvite method of fractional steps potassium dihydrogen phosphate making
CN87106257A (en) * 1987-09-09 1988-06-15 绵阳农业专科学校 Hcl-f circulating method for producing potassium orthophosphate
CN1045388A (en) * 1989-03-10 1990-09-19 李换位 Make the method for potassiumphosphate and NPK fertilizers at low temperatures by Repone K
CN1035725C (en) * 1993-04-19 1997-08-27 山东省临沂市化工总厂 Method for prodn. of potassium sulphate type ternary composite fertilizer

Also Published As

Publication number Publication date
CN1088447C (en) 2002-07-31

Similar Documents

Publication Publication Date Title
CN103011122B (en) Method for producing water-soluble potassium ammonium phosphate from wet-process phosphoric acid
CN102617250A (en) Novel long-acting alkaline compound fertilizer and preparation method thereof
CN1067363C (en) Process for preparation of products containing phosphorus-nitrogen and prodcts obtained
CN101041603A (en) Preparation technical method of urine sulfur radical composite fertilizer
CN106316495A (en) Multi-element compound fertilizer and production method thereof
US2037706A (en) Manufacture of ammoniated superphosphates
CN1125798C (en) Fertilizer for saline-alkaline field and its production process
CN1280968A (en) Process for preparing organic composite N-P-K fertilizer from solidified substance in black paper-making liquid
CN104085870A (en) Synthetic method of slow release manganese fertilizer
CN106380231A (en) Method for producing calcium superphosphate with phosphate rock tailings and phosphoric acid sludge
CN106045767A (en) Agricultural soil loosening liquid fertilizer, method for preparing same and application of agricultural soil loosening liquid fertilizer
CN103588543B (en) Production method for multi-nutrient urea sulfuric acid sulfur-based composite fertilizer
CN1187480A (en) Process of co-producing sulfonyl phosphate potassium fertilizer in superphosphate equipment
US2680679A (en) Manufacture of fertilizers
CN102086131A (en) Method for co-producing diammonium phosphate by powdery monoammonium phosphate production device
CN1037430C (en) Multielement compound fertilizer and its producing method
US4073635A (en) Process for producing a slurry suitable for the manufacture of a mixed fertilizer containing nitrogen plus phosphorus
CN108530226A (en) A kind of highly acid composite fertilizer that phosphorus potassium utilization rate can be made to improve 3 to 5 times
CN1280111A (en) Middle concentrate compound potassium sulfate fertilizer and its producing method
CN102408261A (en) Ammonium sulfate phosphate compound fertilizer able to decompose phosphor and potassium in soil
JP6719733B2 (en) Soil modifier manufacturing method and soil modifier
CN1212248A (en) Method for directly producing chlorineless compound fertilizer
Mashkhurakhon et al. A new kind of fertilizer carbonitrophos of Central Kyzylkum phosphates and urea
CN1116250C (en) Fluid of full-element plant nutrients and its preparing process
CN1094918C (en) Method for prodn. of high efficiency composite fertilizer contg. nitrogen, phosphorous and potassium

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee