114results about How to "Adjust nutrient content" patented technology

The invention relates to the technical field of chemical industry, and discloses a method for preparing a dendrobium officinale nutrient fertilizer. The method comprises the following steps: determining the proportion of nutritive elements in the dendrobium officinale nutrient fertilizer by analyzing various nutritive elements absorbed in a growth process of dendrobium officinale, reacting phosphoric acid with carbamide to generate an intermediate, then introducing ammonia gas into the intermediate to produce ammonium dihydrogen phosphate, separating part of ammonium dihydrogen phosphate by crystallization so as to control the content of nitrogen and phosphorus in a solution to meet the proportion required by the growth of dendrobium officinale, and then adding potassium and other medium trace element compounds into the solution to prepare a fertilizer special for dendrobium officinale. According to a production method disclosed by the invention, raw materials can be fully used, produced ammonium dihydrogen phosphate is relatively good in quality, and the prepared fertilizer special for dendrobium officinale is relatively low in cost.

The invention relates to the technical field of chemical industry, particularly a production method for preparing ammonium phosphate and coproducing a special fertilizer for mulberry. By analyzing nutrient demand conditions in the mulberry growth process in combination with analysis and understanding of the defects in the ammonium phosphate product preparation technique, the preparation technique of the special combined compound fertilizer for mulberry is combined with the preparation technique of the ammonium phosphate product to perform complementation, thereby lowering the waste liquid discharge amount in the ammonium phosphate product preparation technique, avoiding the defect of lower ammonium phosphate product purity due to deep crystallization, and improving the quality of the ammonium phosphate product. The method enhances the mulberry growth rate, improves the mulberry yield and quality, prevents excessive elements from residing in soil due to improper matching of nutrient elements, lowers the soil hardening rate, enhances the land utilization ratio, and has obvious environmental protection value and economic benefit.

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing ammonium dihydrogen phosphate with a special astragalus membranaceus fertilizer as a byproduct. Through analysis on requirements on nutritional elements in the astragalus membranaceus growth process, analysis and realization of fertilization conditions of traditional astragalus membranaceus planting, research and discussion of the absorption conditions of crops on nitrogen, phosphorus and potassium, and analysis by combining with the defects in the preparation process of an ammonium dihydrogen phosphate product, a production process of the special fertilizer for astragalus membranaceus is combined with a preparation process of the ammonium dihydrogen phosphate product, so that the preparation process of the ammonium dihydrogen phosphate product and the preparation process of the special fertilizer for the astragalus membranaceus are complementary; production of the special fertilizer for the astragalus membranaceus is carried out by using liquid waste generated in the preparation process of the ammonium dihydrogen phosphate product; the added value of the product in the preparation process of the ammonium dihydrogen phosphate product is increased; the discharge of the liquid waste is lowered; and meanwhile, waste of nitrogen and phosphorus resources also can be avoided by the unnecessary deep crystal ammonium dihydrogen phosphate product in the ammonium dihydrogen phosphate process.

The invention relates to the field of chemical technique, especially to a production method for preparing monopotassium phosphate and a by-product a special fertilizer for Taxus chinensis. By changing coefficients such as temperature and the like of wet-process phosphoric acid preparation of monopotassium phosphate, purity of the product monopotassium phosphate is raised, and a compound fertilizer containing N, P and K combined forms can simultaneously be produced. In addition, formaldehyde is added into a filtrate to prepare a controlled-release compound fertilizer. By the method, purity of monopotassium phosphate can be raised, and the produced special fertilizer for Taxus chinensis has good absorptivity. Meanwhile, the produced special fertilizer for Taxus chinensis can meet nutritional requirements of each period of growth cycle of Taxus chinensis. The special fertilizer is an efficient compound fertilizer.

The invention relates to the technical field of chemical industry, and discloses a method for preparing a nutritional fertilizer for apples. The method comprises the following steps: analyzing proportions of all nutritional elements required by the growth of apples by researching the amounts of absorption of all the nutritional elements from soil in the growth process of apples, reacting phosphoric acid with carbomite to generate an intermediate, introducing ammonia water into the intermediate to produce ammonium dihydrogen phosphate, crystallizing parts of ammonium dihydrogen phosphate to precipitate, and adjusting the content of nitrogen and phosphorus in a solution to meet the requirements of the growth of apples in order to prepare the nutritional fertilizer for apples. The preparation method has the advantages of full utilization of raw materials, no emission of waste liquids polluting environment, good quality of the prepared ammonium dihydrogen phosphate, and low cost of the prepared nutritional fertilizer for apples.

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing calcium hydrophosphate with a special Chinese prickly ash fertilizer as a byproduct. Through analysis on the effective absorptive amount of nitrogen phosphorus potassium elements according to the fertilizer required by Chinese prickly ash, and adjustment and collocation of element content in a production process, the prepared composite fertilizer in a compound sate can meet the requirements of the Chinese prickly ash to the maximal extent while over-high cost caused by improper collocation of the elements in production of the composite fertilizer is reduced, and excessive elements are further prevented from being fed to soil to cause environmental pollution due to solidification of the composite fertilizer; meanwhile, the effective absorption rate of the prepared special Chinese prickly ash fertilizer is relatively high and can reach over 97.5%, nutrient elements left in a soil structure layer are relatively few, the damage caused by soil hardening is avoided, the growth environment of the Chinese prickly ash is improved, and the growth environment quality of the Chinese prickly ash is ensured.

The invention relates to the technical field of chemical industry, and discloses a method for preparing a nutritional fertilizer for wheat. The nutritional fertilizer for wheat is prepared according to nutritional element proportions required by the growth of wheat, obtained by analyzing the nutritional components absorbed in the growth process of wheat, so the utilization of the fertilizer is improved, the fertilization cost is reduced, the output of wheat in unit area is improved, the production cost of the nutritional fertilizer for wheat is low, and the preparation method has the advantages of simplicity, no discharge of pollutants, and environmental protection.

The invention relates to the technical field of chemical engineering and particularly relates to a production method for preparing monopotassium phosphate and a byproduct special fertilizer for medlar. The quality of the produced medlar compound fertilizer is guaranteed by virtue of molar ratio of raw materials in a production process and accurate analysis and detection of the filtrate in a crystallization step, and a waste liquid in the production process of a chemical engineering product is used as a raw material of the medlar compound fertilizer by way of adjusting the content of filtrate components, so that emission of the waste liquid is avoided and the production cost of the compound fertilizer is lowered. Meanwhile, the purity of a monopotassium phosphate product is improved, the production cost of the monopotassium phosphate product is lowered, and the environmental pollution is avoided. The production method has remarkable economic and ecologic benefits.

The invention relates to the technical field of chemical engineering, particularly a production method of a special fertilizer for preparing calcium hydrogen phosphate and coproducing pepper. The effective absorption amounts of nitrogen, phosphorus and potassium are analyzed according to the fertilizer demanded by the pepper, the contents of the nitrogen, phosphorus and calcium in the production process are regulated and matched, and the potassium component and other minor element compounds are added, so that the prepared combined-state compound fertilizer can maximally satisfy the demands of pepper and can be completely absorbed by the pepper (the absorption rate is up to 96.1%), thereby lowering the overhigh cost due to improper element matching in the compound fertilizer production and further avoiding the environment pollution due to solidification of the compound fertilizer since excessive elements are added into the soil.

The invention relates to the technical field of chemical industry, in particular to a production method for a special watermelon fertilizer as an ammonium dihydrogen phosphate preparation byproduct. By changing temperature and other coefficients of wet process preparation of ammonium dihydrogen phosphate from phosphoric acid, the purity of the ammonium dihydrogen phosphate product is improved, also a compound fertilizer containing compound forms of N, P and K can be produced, the purity of ammonium dihydrogen phosphate can be enhanced, the produced special watermelon fertilizer has good absorptivity, and meanwhile formaldehyde is added to the filtrate to make a controlled release compound fertilizer. The produced special watermelon fertilizer can meet the nutritional needs of each period in the growth cycle, greatly increases the watermelon yield, and is an efficient compound fertilizer.

The invention relates to the technical field of chemical engineering and particularly relates to a production method for preparing monocalcium phosphate and a byproduct special fertilizer for capsicum annuum. A preparation process of a monocalcium phosphate product and a preparation process of a special fertilizer for capsicum annuum are further combined by way of analyzing requirements for nutrients of special fertilizer for capsicum annuum and analyzing the defects in the monocalcium phosphate preparation process, so that in the monocalcium phosphate product preparation process, deep crystallization is not needed, thereby improving the purity of the monocalcium phosphate product and lowering the cost of extra purification in the prior art. By using the waste liquid, environmental pollution caused by massive discharge of elements such as phosphorus, calcium and nitrogen in the waste liquid is avoided, so that the production method has remarkable environmental protection value and economic benefit.

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing diammonium hydrogen phosphate and a byproduct special fertilizer for oats. The fertilizer requirements of oats are analyzed, and the defects in processing steps in the preparation of an ammonium dihydrogen phosphate product are analyzed, so that the preparation processes of the special fertilizer for oats and the ammonium dihydrogen phosphate product are combined, and the two irrelevant processes are made complementary, thereby increasing the added value in the preparation process of the ammonium dihydrogen phosphate product, improving the purity of the ammonium dihydrogen phosphate product, saving element resources such as nitrogen, phosphorus and the like, and reducing the discharge amount of waste liquor; and nutritive elements in the waste liquor produced in the preparation process of the ammonium dihydrogen phosphate product are controlled and regulated, so that the elements such as nitrogen, phosphorus and the like in the waste liquor can satisfy growth requirements of oats, the purity of the ammonium dihydrogen phosphate product is increased to 93% or above, the residual nitrogen and phosphorus elements in the waste liquor are reduced, and the discharge amount of the waste liquor is reduced. Thus, the production method has remarkable environmental protection value and economic benefits.

The invention relates to the technical field of chemical engineering, particularly a production method for preparing tricalcium phosphate and coproducing a special fertilizer for rye. The effective absorption amounts of nitrogen, phosphorus and potassium are analyzed according to the fertilizer demanded by the rye, and the contents of the elements in the production process are regulated and matched, so that the prepared combined-state compound fertilizer can maximally satisfy the demands of rye, thereby lowering the overhigh cost due to improper element matching in the compound fertilizer production and further avoiding the environment pollution due to solidification of the compound fertilizer since excessive elements are added into the soil. By adjusting the component contents of the filtrate, the waste liquid in the chemical product production process is used as the raw material for producing the compound fertilizer, thereby avoiding the discharge of the waste liquid and lowering the production cost of the compound fertilizer. The production method has obvious environmental protection value and economic benefit.

The invention relates to the technical field of chemical engineering, particularly to a production method for preparing a monocalcium phosphate byproduct used as a special fertilizer for chives. A fertilizer required by the chives is analyzed, nutrient elements contained in a residual waste liquid in a preparation technology of a monocalcium phosphate product are analyzed, preparation of the monocalcium phosphate product and preparation of the special fertilizer for the chives are organically combined together, the discharged waste liquid amount is reduced, a large amount of waste of nitrogen, phosphorus and calcium elements is avoided, and the crystallization separation amount of monocalcium phosphate in a monocalcium phosphate crystallization separation step is controlled, so that deep crystallization separation is unnecessary, the purity of the monocalcium phosphate product is further increased to be higher than 97.1%, and the cost for purifying the monocalcium phosphate product in the traditional preparation technology of the monocalcium phosphate product is reduced.

The invention relates to the technical field of chemical industry and particularly relates to a production method for preparation of calcium dihydrogen phosphate and by-production of a special fertilizer for cauliflowers. According to the production method, by analyzing the fertilizer demand situation of the cauliflowers and combining with the shortcomings in a preparation process of a calcium dihydrogen phosphate product, a preparation process of the calcium dihydrogen phosphate product and a preparation process of the special fertilizer for the cauliflowers are combined for production, so that the added value of the product in the preparation process of the calcium dihydrogen phosphate product is improved, the purity of the calcium dihydrogen phosphate product is improved, the waste of phosphorus and calcium element resources is reduced, the emission of waste liquid is reduced, and the serious pollution of the ecological environment is avoided.

The invention relates to the technical field of chemical industry, and particularly relates to a production method for preparing tripotassium phosphate and by-producing a special fertilizer for litchi. According to the production method, the effective absorption amount of nitrogen, phosphorus and potassium elements is analyzed according to the fertilizer requirement of litchi, and element content is regulated and collocated in a production process course, so that a prepared compounded-form compound fertilizer can furthest meet the requirement of the litchi, excessively high cost caused due to improper element collocation in the production of the compound fertilizer is reduced, and environmental pollution caused by that the compound fertilizer is solidified by adding excessive elements to soil is further prevented; and the impurity removal cost needed when a tripotassium phosphate product is prepared by adopting the traditional wet-process phosphoric acid method is made up, so that the purity of the prepared tripotassium phosphate product reaches more than 95%, the production cost is reduced by 93%, and outstanding economic benefit is achieved.

The invention relates to the technical field of chemical industry and particularly relates to a production method of monopotassium phosphate with a byproduct fertilizer specially used for towel gourd. The content of elements in the fertilizer specially used for towel gourd and the effective absorption of towel gourd to nitrogen, phosphorus and potassium elements are detected and analyzed, and the content of the elements used in the production process are regulated and matched, so that the prepared combined compound fertilizer can meet crop demands to the maximum extent, overhigh cost caused by improper matching of the elements in the production process of a compound fertilizer is reduced, and furthermore the problem that environment pollution caused by soil hardening due to use of the compound fertilizer containing too many elements in soil is avoided.

The invention relates to the technical field of chemical engineering and particularly relates to a production method for preparing a special fertilizer for dasheen from diammonium hydrogen phosphate by-products. By virtue of analyzing requirements on nutrient elements of the special fertilizer for dasheen and combining the defects existing in a preparation process of diammonium hydrogen phosphate products, the preparation process of diammonium hydrogen phosphate products is combined with a preparation process of the special fertilizer for dasheen so that the two processes are complementary, wastage rates of nitrogen and phosphorus and the discharge amount of waste liquid in the preparation process of the diammonium hydrogen phosphate products are reduced and the production cost of diammonium hydrogen phosphate is reduced; by controlling parameters in process steps, the purity of the diammonium hydrogen phosphate products can reach 96% and meanwhile an efficient special nitrogen-phosphorus-potassium complex salt combined-state compound fertilizer is provided for dasheen.

The invention relates to the technical field of chemical industry, and in particular to a production method of monopotassium phosphate with a by-product welsh onion special fertilizer. Coefficients such as temperature in a wet process for preparation of monopotassium phosphate are changed to improve the purity of monopotassium phosphate product and to produce a compound fertilizer containing N, P and K in combined state; and a filtrate is adjusted into an acidic state, and is added into a formaldehyde solution to prepare a controlled release compound fertilizer. The method can improve the purity of monopotassium phosphate, besides the produced welsh onion special fertilizer has good absorption rate; and the produced welsh onion special fertilizer meets the nutritional needs of each period in the growth cycle, greatly increases welsh onion yield, and is a high efficient compound fertilizer.