Method for producing circular granular potassium and organic-inorganic compound fertilizer through organic waste liquor

A technology of organic waste liquid and granular potassium, which is applied in the direction of organic fertilizer, fertilizer made from biological waste, fertilizer form, etc., can solve the problem that granulation-drying tail gas discharge is difficult to meet the standard, tail gas is difficult to meet environmental protection requirements, and affects the quality of organic fertilizer, etc. problems, to achieve the effect of improving crop quality, improving soil properties and environment, and realizing large-scale industrial production

Inactive Publication Date: 2010-12-01
倪丹仙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, one is that the decomposition and carbonization of organic matter is easy to occur during the granulation-drying process, which affects the quality of the organic fertilizer; Exhaust gas is difficult to meet environmental protection requirements
Therefore, it is also necessary to provide a reasonable process that can solve the problems that the production enterprises of glutamic acid and monosodium glutamate produce organic fertilizers from acidic waste water containing organic matter, which are prone to carbonization and decomposition of organic matter, and granulation-drying tail gas emissions are difficult to meet the standards. Technical problems that urgently need to be solved in the technical field

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: the production of "1-0-52" potassium-containing round granular potassium

[0023] The raw material formula is: "organic liquid": 200kg / t (containing organic matter=35% (dry basis), nitrogen=6%, containing H 2 SO 4 %=2.5, water content%=40.0); Potassium chloride: 880kg / t (60%K 2 O, H 2 O% 1). The production steps are as follows:

[0024] (1), add the 70-80 ℃ organic liquid from the organic waste liquid concentration process in the "organic liquid" tank of the drum granulator, and start the stirring paddle, feed 0.87% synthetic ammonia of "organic liquid" amount ( NH 3 ) and H in "organic liquid" 2 SO 4 Reaction, which is neutralized to neutral.

[0025] (2), put potassium chloride base material into the drum granulator, the circulation flow rate of the base material reaches 4-5 times of the instantaneous flow rate of the organic liquid (dry basis) to be put into the drum granulator, start granulation and return Material circulation system, and preh...

Embodiment 2

[0034] Embodiment 2: the production of "6-0-36" potassium-containing round granular potassium

[0035] The raw material formula is: "organic liquid": 650kg / t (containing organic matter=15% (dry basis), nitrogen=10%, containing H 2 SO 4 %=2.5; water content%=40.0); Potassium chloride: 600kg / t (60%K 2 O, H 2 O% 1). The production steps are as follows:

[0036] (1), add the 70-80 ℃ organic liquid from the organic waste liquid concentration process in the "organic liquid" tank of the drum granulator, and start the stirring paddle, feed 0.87% synthetic ammonia of "organic liquid" amount ( NH 3 ) and H in "organic liquid" 2 SO 4 Reaction, which is neutralized to neutral.

[0037] (2) Put potassium chloride into the drum granulator, the circulation flow rate of the bottom material reaches 4-5 times of the instantaneous flow rate of the organic liquid (dry basis) to be put into the drum granulator, and start the granulation return cycle system, and preheat the system until th...

Embodiment 3

[0041] Example 3: Production of "20-5-8, organic matter 15%" organic-inorganic compound fertilizer

[0042] The raw material formula is: "organic liquid": 716.67kg / t (which contains organic matter=35% (dry basis), nitrogen=6%, containing H 2 SO 4 %=2.5; water content%=40.0); urea (%N46, H 2 O%1) 299.85kg / t; MAP (%N11, P 2 o 5 %44,H 2 O% 2) 136kg / t; Potassium chloride: 135kg / t (60% K 2 O, H 2 O% 1). The production steps are as follows:

[0043] (1), add the 70-80 ℃ organic liquid from the organic waste liquid concentration process in the "organic liquid" tank of the drum granulator, and start the stirring paddle, feed 0.87% synthetic ammonia of "organic liquid" amount ( NH 3 ) and H in "organic liquid" 2 SO 4 Reaction, which is neutralized to neutral.

[0044] (2) Put potassium chloride, urea, MAP, and dry materials neutralized to neutral organic liquids into the drum granulator as base materials according to the formula requirements. The instantaneous flow rate of...

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Abstract

The invention relates to a method for producing circular granular potassium and organic-inorganic compound fertilizer through organic waste liquor, which comprises the following steps of: (1) neutralizing organic acidic wastewater by using synthesis ammonia until the wastewater is neutral; (2) adding bedding materials such as sylvite, urea, ammonium phosphate and the like in a 'tumbling and pelleting' device according to the requirement of a formula; (3) sprinkling neutral organic liquor obtained by the step (1) on a charge returning bed in a pelletizer to prepare a semi-finished product; and (4) drying, sieving and cooling the semi-finished product obtained by the step (3) to obtain a product. The method has the advantages that: 1, the produced circular granular potassium used as basic fertilizer for blending fertilizer is superior to flaky granular potassium produced by adopting the extrusion technology at present; and 2, the circular granular potassium and the organic-inorganic compound fertilizer which are produced by adopting the technology solve the problems that organic charring decomposition is easy to occur and the emission of tail gas does not reach the standard in a process that production enterprises of glutamic acid and monosodium glutamate produce the organic fertilizer by using the organic acidic wastewater and adopting 'tumbling, spouting and pelleting'.

Description

technical field [0001] The present invention relates to a kind of method that organic waste liquid produces round granular potassium and organic-inorganic compound fertilizer, particularly relates to a kind of organic acid waste water, potassium chloride (or potassium sulfate), potassium chloride (or potassium sulfate), etc. The invention discloses a method for producing round granular potassium and organic-inorganic compound fertilizer mainly containing potassium as raw materials such as urea and ammonium phosphate; it belongs to the field of fertilizers. Background technique [0002] The production and use of chemical fertilizers has gone through the development stage from simple fertilizer to compound (compound) fertilizer, and has developed from inorganic compound fertilizer to the stage of organic-inorganic compound fertilizer, and has begun to enter the stage of soil testing and formula fertilization . Organic-inorganic compound fertilizer is a fertilizer made by comb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05G5/00C05F5/00
CPCY02A40/20
Inventor 倪丹仙
Owner 倪丹仙
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