45results about How to "Realize resource regeneration" patented technology

A method for regenerating activated carbon saturated with organic adsorption. The saturated activated carbon flows in the gasification cracking furnace for regeneration. It is divided into three stages from the furnace head to the furnace end of the gasification cracking furnace: drying stage: drying temperature 80‑150 °C , drying time 3min‑20min; desorption stage: desorption temperature 350‑700°C, desorption time 20min‑150min; activation stage: activation temperature 750‑1200°C, activation time 5‑150min; water vapor is introduced during the activation stage, The ratio of feed to activated carbon is 100‑500ml / min:1kg. The invention has the advantages of continuous production, high heat source utilization rate, stable activated carbon regeneration performance, high yield, no pollution and low labor intensity.

The invention provides a method for producing sodium carboxymethyl cellulose by using papermaking sludge as a raw material. Including raw material pretreatment, alkalization, pressure filtration, etherification, neutralization, alcohol washing, drying, drying and crushing, the moisture content of the papermaking sludge used is ≤80% (mass fraction). The raw material of the invention comes from the waste of the papermaking industry, which is large in quantity, easy to obtain, low in production cost, simple in process steps and does not produce secondary pollution; it not only turns papermaking sludge into treasure, realizes resource regeneration, but also protects the ecological environment It solves a major problem in the paper industry and is a new technology with environmental, economic and social benefits.

The invention provides a method for disposing BDO (1,4-butanediol) waste liquid by recycling. The method comprises the steps of (1) putting the BDO waste liquid into a distillation column, conductingvacuum distillation, separating low-boiling-point substances and water, and bottom waste liquid; (2) putting the low-boiling-point substances and water separated in step (1) to the distillation columnto separate high-purity and low-boiling-point substances; (3) sending the bottom waste liquid obtained in step (1) to a thermal desorption rotary kiln, and after condensing gas phase components, andobtaining high calorific fuel oil blend oil and residue. The method for disposing the BDO waste liquid by recycling solves problems of high salt content of the BDO waste liquid and being unfavorable to distillation, and the method for disposing the BDO waste liquid by recycling has a simple process flow, strong operability, energy saving, ability to recover part of components, not only realizes resource regeneration, but also greatly reduces operating cost of hazardous waste incineration companies. The amount of waste slag produced after treatment is reduced, leachate precipitation during landfill and other treatment processes is reduced, a risk of secondary environmental pollution is avoided, and disposal of waste slag and subsequent disposal costs of an enterprise are reduced.

The invention relates to a chemical industrial waste salt refining process which comprises the following steps: pretreating high salt wastewater generated in the production process of aminobenzene ether and p-nitrophenol so as to adjust the pH value, adsorbing by using activated carbon, kieselguhr or macroporous resin, removing organisms and organic salts in the wastewater, reducing the COD of the wastewater, neutralizing the high salt wastewater, performing multi-effect evaporation or mechanical recompression so as to evaporate and crystallize, and centrifuging a solid salt; performing high-temperature calcination on the centrifuged solid salt in a rotary kiln or a tunnel kiln, thereby decomposing and oxidizing the organisms at a high temperature, further thoroughly combusting the tail gas generated through calcination in a heat accumulation type tail gas combustion furnace, preheating and recycling the tail gas, performing spraying absorption, dissolving the calcinated salt with water so as to prepare a saturated solution, filtering by using a precise filter, directly supplying the filtrate to ionic membrane caustic soda for use, or performing multi-effect evaporation or mechanical recompression on the filtered saturated salt water so as to evaporate, crystallize and purify, and performing centrifugation, thereby obtaining high-quality solid sodium chloride.

The invention discloses a preparation device for a breeding eco-nutritional blanket medium. The preparation device comprises a deodorization and sterilization tank, a mixing agitator, a regulating tank, a slurry homogenizing box, a dewatering device, a simple presser, a drying device and a cutting device, wherein the deodorization and sterilization tank, the mixing agitator, the regulating tank and the slurry homogenizing box are connected through slurry delivery pumps and pipelines in sequence; the dewatering device is arranged at the discharge opening of the slurry homogenizing box; the simple presser is arranged at the discharge opening of the dewatering device; the drying device is arranged at the discharge opening of the simple presser; and the cutting device is arranged at the discharge opening of the drying device. The invention further provides a preparation method for the breeding eco-nutritional blanket medium. According to the invention, resource regeneration and efficient utilization of industrial sludge, domestic sludge and agricultural waste are realized, the produced breeding eco-nutritional blanket medium can avoid soil impoverishment, and a novel ecological breeding nutritional medium with a low production cost is provided.

The invention provides preparation method using aluminum profile factory slag to synthesize an anhydrous calcium sulphoaluminate expanding agent. The preparation method includes: weighing the aluminum profile factory slag, kaolin and limestone materials or limestone, and evenly mixing to obtain a raw material; grinding the raw material for 0.5-2 hours to obtain slurry, wherein the mass ratio of the raw material to spheres to water is 1:(1.4-1.6):(0.7-0.9); filtering and dewatering the slurry, drying, crushing, and sieving to obtain a powder material; mixing the powder material with binder, performing compression molding, and drying a formed base material; placing the dried base material into a kiln, calcining the dried base material under air atmosphere and the calcining temperature of 1310-1370 DEG C, performing heat preservation for 0.5-2 hours, and cooling to room temperature to obtain the anhydrous calcium sulphoaluminate expanding agent. The preparation method has the advantages that the aluminum profile factory slag can be utilized to the maximum extent under the premise that the high-purity anhydrous calcium sulphoaluminate can be obtained, the high-added-value recycling of the aluminum profile factory slag is achieved, and the production cost of the anhydrous calcium sulphoaluminate expanding agent is lowered evidently.