33results about How to "Make up for cleaning costs" patented technology

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 industry, and especially relates to a method for preparing tripotassium phosphate and preparing a special fertilizer for flax as a byproduct. The effective absorption amounts of N, P and K elements are analyzed according to fertilizer requirements of flax, and the contents of elements in the production process are adjusted and matched to make the prepared compounded composite fertilizer maximally meet the demands of flax so the too high cost caused by improper matching of the elements in the production of the composite fertilizer is avoided, and environmental pollution caused by solidification of the composite fertilizer due to the addition of excess elements into soil is further avoided; and the molar ratio of raw materials in the production process and the accurate analysis and detection of a filtrate in a crystallization step make the quality of the produced flax composite fertilizer guaranteed, and the adjustment of the contents of components of the filtrate allows a waste liquid in the production process of the chemical industry product to be used as a raw material for producing the composite fertilizer, so the emission of the waste liquid is avoided, the production cost of the composite fertilizer is reduced, and the method has substantial environmental protection values and economic benefits.

The invention relates to the technical field of chemical engineering, in particular to a production method of special tobacco fertilizer serving as a byproduct of preparation of monopotassium phosphate. The special tobacco fertilizer serving as the byproduct prepared from waste liquid obtained by preparation of the monopotassium phosphate by a wet method is produced by detecting and analyzing the element content of the special tobacco fertilizer and an effective absorption form and an effective absorption amount of tobaccos to nitrogen, phosphorus and potassium elements and adjusting and matching the element content in a technical production process; the matching contents of a large quantity of nutritional elements such as nitrogen, phosphorus and potassium are adjusted, so that excessive nutritional elements are prevented from being introduced into soil, and the environmental pollution caused by solidification of composite fertilizer and blocking of the soil is avoided; furthermore, the phenomenon that the composite tobacco fertilizer is extremely high in production cost due to element mis-matching is also avoided; the production method is obvious in environment-friendly value and high in economical benefit.

The invention relates to the technical field of chemical industry, and particularly relates to a production method for preparing calcium hydrogen phosphate and by-producing a special fertilizer for cucurbit. According to the production method, the effective absorption amount of nitrogen, phosphorus and potassium elements is analyzed according to the fertilizer requirement of cucurbit, 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 cucurbit, 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 a high-purity calcium hydrogen phosphate product can be produced in the preparation process of the special fertilizer for the cucurbit by controlling the process condition of the production, so that the impurity removal cost needed when the calcium hydrogen phosphate product is prepared by adopting the traditional wet-process phosphoric acid method is made up, the purity of the calcium hydrogen phosphate product reaches more than 96%, the production cost is reduced, and outstanding economic benefit is achieved.

The invention relates to the technical field of chemical industry, and especially relates to a method for preparing dipotassium hydrogen phosphate and preparing a special fertilizer for spinach as a byproduct. The effective absorption amounts of N, P and K elements are analyzed according to fertilizer requirements of spinach, and the contents of elements in the production process are adjusted and matched to make the prepared compounded composite fertilizer maximally meet the demands of spinach, so the too high cost caused by improper matching of the elements in the production of the composite fertilizer is avoided, and environmental pollution caused by solidification of the composite fertilizer due to the addition of excess elements into soil is further avoided.

The invention relates to the field of chemical technologies, and particularly relates to a production method for preparing monopotassium phosphate and coproducing a special fertilizer for capsella bursa-pastoris. Through carrying out research and analysis on the requirements on the contents of nutritional ingredients in capsella bursa-pastoris and carrying out regulation and collocation on the contents of elements in the technological process of production, a prepared combined compound fertilizer can maximally meet the demands of crops, so that a situation that the cost is too high due to improper element collocation in the production of the compound fertilizer is reduced, and a situation that the compound fertilizer solidifies the soil and then pollutes the environment because excessive elements are put into the soil is further 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 in particular relates to a production method for preparing tripotassium phosphate and co-producing a fertilizer special for kiwi fruits. The production method comprises the following steps: according to a fertilizer required by the kiwi fruits, analyzing the effective absorption quantities of nitrogen, phosphorus and potassium elements, and adjusting and collocating the element content in a production technological process to ensure that a prepared combination type compound fertilizer can meet the requirements of the kiwi fruits to a highest extent, the excessive cost caused by improper element collocation in the production of the compound fertilizer can be reduced, and the environmental pollution caused by solidification of the compound fertilizer because excessive elements are fed into soil can be further avoided; the impurity removal cost for preparing a tripotassium phosphate product by using a conventional wet-process phosphoric acid process can be compensated to ensure that the purity of the prepared tripotassium phosphate product can reach more than 95%, and the production cost of the prepared tripotassium phosphate product can be reduced by 93%; and the production method disclosed by the invention has significant economic benefits.

The invention relates to the field of chemical technology, in particular to a production method for preparing potassium dihydrogen phosphate by-product Lycium barbarum special fertilizer, through the molar ratio of raw materials in the production process, accurate analysis and detection of the filtrate in the crystallization step, so that the produced The quality of the wolfberry compound fertilizer is guaranteed, and by adjusting the content of the filtrate, the waste liquid in the production process of chemical products is used as the raw material for compound fertilizer production, which avoids the discharge of waste liquid and reduces the production cost of compound fertilizer; at the same time, it improves It improves the purity of potassium dihydrogen phosphate products, reduces the production cost of potassium dihydrogen phosphate products, avoids environmental pollution, and has significant economic and ecological benefits.

The invention relates to the technical field of chemical engineering and particularly relates to a preparation method of a special fertilizer for mung bean. By making a study on nutrient elements absorbed during the growth of mung bean and analyzing the proportion of the nutrient elements needed during the growth of mung bean, an intermediate is prepared by virtue of reacting phosphoric acid with carbamide and then is reacted with alkaline potassium to prepare potassium dihydrogen phosphate; by controlling the nutrient content ratio of a filtrate during crystallization of potassium dihydrogen phosphate, trace elements are added into the filtrate obtained by separating potassium dihydrogen phosphate so as to prepare the special fertilizer for mung bean. By virtue of the method, the purity of potassium dihydrogen phosphate is improved, the special fertilizer for mung bean is prepared by analyzing the ratio of the nutrient elements needed during the growth process of mung bean, the yield of mung bean is improved, no waste liquid is discharged during the production process and thus no environmental pollution is caused.

The invention relates to the technical field of chemical engineering, and discloses a preparation method of a special fertilizer for Poria cocos. Through analysis of the nutrient elements required in the growth process of Poria cocos, phosphoric acid and carbamide are subjected to reaction for the preparation of an intermediate; then the intermediate reacts with alkaline potassium to prepare sodium dihydrogen phosphate; through control of nutrient content ratio of the filtrate in the crystallization processes of sodium dihydrogen phosphate, potassium and other trace elements are added to the filtrate with sodium dihydrogen phosphate separated to prepare the special fertilizer for Poria cocos. The method not only improves the purity of sodium dihydrogen phosphate, and through the analysis of the ratio of nutrient elements required in the growth process of Poria cocos, the prepared special fertilizer can achieve high yield with a small fertilizer amount.