188results about How to "Reduce ammonia content" patented technology

A nanobubble generator, a nanobubble-containing liquid solution comprising a substantially high concentration of nanobubbles, a system and methods of producing the nanobubble-containing liquid solution. The nanobubble generator includes an inflow portion for receiving a source liquid solution, a series of at least two sequential cavitation zones and shear planes to treat the source liquid solution and producing nano-bubble containing liquid solution, and an outflow portion for releasing the nanobubble-containing liquid solution.

The present invention is directed to a method for removal by oxidation of the excess ammonia (NH₃) gas (“ammonia slip”) resulting from flue gases that have been subjected to selective catalytic reduction (SCR) for reduction of nitrogen oxides (NOx) with ammonia. More specifically, the inventive method uses an ammonia oxidation catalyst consisting of a zeolite, one or more precious metals, and a base metal compound, to catalyze the oxidation of both ammonia and carbon monoxide (CO), while minimizing the formation of nitrogen oxides (NOx). The present invention is useful in treating flue and exhaust gases.

The invention relates to livestock feeding technology, in particular to a making method of a biological fermentation bed for pig farming. Using the biological fermentation bed to farm pigs strictly sticks to the scientific process flow. Raw materials (such as sawdust and rice hull) and strain are mixed from top to bottom for three times and are picked for fermentation for about a week. Core temperature of padding reaches 60DEG C-85 DEG C and is kept for 3-5 days. Even pathogenic microbes included in the raw materials can be killed. As strongest pathogenic microbes survive tens of hours at most at 60 DEG C, healthy pigs entering the fermentation bed can grow more healthily.

The invention relates to the technical field of biological fish guano and discloses a biological composite fertilizer aqua and a production method thereof. The biological composite fertilizer aqua comprises chicken manure/cow dung, unite bran, a decomposition microbial inoculum, inorganic fertilizer, domestic fungus slag, calcium superphosphate, trace elements, soybean meal/rapeseed meal, bacillus subtilis, actinomyces and photosynthetic bacteria as raw materials. The production method comprises the following steps of carrying out mixing fermentation on chicken manure/cow dung, unite bran and a decomposition microbial inoculum to obtain thoroughly decomposed organic fertilizer, fully mixing the thoroughly decomposed organic fertilizer and other raw materials, and carrying out secondary fermentation, drying and split charging. The biological composite fertilizer aqua is efficient, superior and eco-friendly fish guano which is obtained by combination of a plurality of beneficial microbial florae, organic fertilizer and inorganic fertilizer and is added with a plurality of medium trace elements. The production method of the biological composite fertilizer aqua is simple, has simple and easily-controllable processes and has a low cost. The biological composite fertilizer aqua has good quality, can fast improve water fertility and purify water, realizes combination of fertilizer and feed, has high comprehensive income, improves fish immunity and improves product quality.

The invention relates to the biological fermentation technology, in particular to a compound microbial starter, and a method which uses the compound microbial starter to produce high-energy protein biological feed. The compound microbial starter selects cellulomonas sp dinitrogen, cellulomonas flavigena, condensate bacillus, lactobacillus acidophilus, bacillus subtilis, lactobacillus starch, compound enzyme bacteria, propionic acid bacteria, candida yeast, saccharomyces diastaticus, saccharomyces cerevisiae, as well as aroma-producing yeast as the bacteria sources, and makes use of the modern biotechnology to prepare various microbial agents; the microbial agents are then treated with anaerobic fermentation with the discarded sweet corn cobs, corn stalks, pea skins, abandoned vegetables and other discarded crops, so as to obtain the high-energy protein biological feed required in livestock and poultry breeding industry. The invention solves the problem of low utilization rate of crop resources; and the high-energy protein biological feed can improve the palatability of feed, increase the enzyme content of the feed, provide an effective way for developing the animal husbandry and solving the food conflicts between people and livestock, as well as reduce the pollution to the environment caused by the traditional crop waste burning.

Methods and apparatus for generating a vapor to be injected into a flue gas stream are described. Apparatus comprises a fluid vaporization and injection assembly further comprising: a stripper for producing first ammonia vapor and a first aqueous ammonia solution from a second aqueous ammonia solution; a reflux tank for producing a second ammonia vapor and the second aqueous ammonia solution from the first ammonia vapor and the first aqueous ammonia solution; and a first outlet for outputting the second ammonia vapor for introduction into the flue gas.

The invention discloses an environmentally-friendly odor removing dual-component cement-based waterproof material, which is prepared from the following ingredients in parts by weight: 1 part of liquidmaterial ingredient and 1-6 parts of powder material ingredient, wherein the powder material ingredient comprises cement, sand, inert filler, active filler and chemical additive; the liquid materialingredient comprises polymer emulsion, defoamer, bactericide and water. The environmentally-friendly odor removing dual-component cement-based waterproof material has the characteristics of extremelylow ammonia content, odor removal, good environment protection performance, good physical performance, good construction hand feeling and convenience in use and is suitable for various construction technologies including spraying, rolling and brushing, and VOC (volatile organic compounds), formaldehyde and harmful heavy metal powder can not be detected.

The present invention discloses a hydrogenation method for producing lubricating oil base oil through poor-quality heavy distillate oil. According to the method, poor-quality heavy distillate oil and hydrogen gas enter a first-stage reaction zone to carry out a hydrorefining reaction, the reaction effluent is separated, the obtained liquid enters a second-stage reaction zone to carry out a hydrorefining reaction, the second-stage reaction effluent enters a third-stage reaction zone to carry out a hydrocracking reaction, the hydrocracking effluent is separated, and at least part of the tail oil and new hydrogen are mixed and then are subjected to an isomerizing dewaxing and finishing reaction to obtain various lubricating oil base oils. With the method of the present invention, the nitrogen-containing impurities in the poor-quality raw material can be subjected to hydrotreating under the relatively mild condition so as to make the poor-quality raw material meet the hydrocracking feeding requirement, such that the lubricating oil base oil raw material source is broadened; and the hydrorefining temperature is substantially reduced so as to increase the operation period of the device and process the poor-quality raw material, or increase the processing capacity of the device in the same operation period.

A system and method for reducing the content of ammonia in water provides a submerged surface having a growth of nitrifying bacteria thereon. An aeration system creates air bubbles that travel along the surface as they rise to create aerobic conditions on the surface, and to circulate the water along the surface to allow the nitrifying bacteria to remove ammonia from the water.

The invention discloses a desulfurization system comprising a tower body, wherein a smoke inlet is arranged in the middle of the tower body; a pure smoke outlet is arranged at the top of the tower body; a slurry pool for containing slurry is formed on the lower part of the tower body; the slurry pool is provided with a mixed liquid outlet; a slurry spraying layer, a rising air gap and a clean water spraying layer are sequentially arranged from the smoke inlet to the pure smoke outlet from bottom to top; the bottom of the slurry pool is respectively connected with an oxidization mechanism and an ammonia supplying mechanism; and the desulfurization system further comprises a slurry circulating mechanism and a clean water circulating mechanism. The invention further provides a desulfurization process; and the process is low in water consumption amount so that the amount of saturated steam in pure smoke is reduced by 30-40% and consumption of external clean water is reduced. According to the desulfurization system and the desulfurization process disclosed by the invention, the operation cost is low; and the consumption of the steam is 20% of that of an ammonia-fertilizer method process and the consumption of power is 40% of that of the ammonia-fertilizer method process. The escaping rate of ammonia is low; the content of the ammonia in the pure smoke is less than 8mg/Nm<3>; no three wastes are discharged; and secondary pollution to an environment is not caused.

A preparation method of herb black liquor modified high-effective water-reducing agent comprises a graft polymerization reaction by adding herbal lignin sulfonate with 20%-240% weight of reactant naphthaline in naphthalene sulfonic acid. The water-reducing rate of herb black liquor modified high-effective water-reducing agent gets to 20%-26%, other performances such as bleeding rate and concrete time-dependent loss are better than naphthalene high-effective water-reducing agent; production cost is reduced lower than that of naphthalene high-effective water-reducing about 25%; ammonia content is low, free formaldehyde content is approximately 1/70 of naphthalene high-effective water-reducing agent, ammonia and formaldehyde pollution is not existed basically. The technology is a environmental protection technology, which can solve pollution problem of herb black liquor, lignin and alkali of black liquor as material are used fully, which is uncapable of generating other rejected products.

The invention relates to the technical field of wastewater treatment, in particular to a coal gasification wastewater phenol and ammonia recovery process. The process comprises the following steps that feeding wastewater is divided into cold feeding materials and hot feeding materials to respectively enter an acid water stripping tower from the tower top and the tower middle upper part; the tower top pressure is set to be 0.9 to 1.2MPa; the tower top temperature is 50 to 80 DEG C; the tower kettle pressure is set to be 0.92 to 1.25 MPa; the tower kettle temperature is 178 to 188 DEG C; acid gas is produced at the tower top; ammonia water vapor is produced at the lateral line; the ammonia water vapor is sequentially used as a heat source of a phenol tower and a solvent stripping tower, and then enters a three-stage segregated system to be concentrated into crude ammonia gas; kettle liquid of the acid water stripping tower enters an extraction device to be subjected to phenol removal; an extraction phase enters the phenol tower; an extracting agent and crude phenol are separated through rectification; a raffinate phrase enters a solvent steam extraction tower; the extracting agent dissolved in the wastewater is stripped out and returns to an extraction tower. By using the process provided by the invention, the steam consumption can be greatly reduced; in addition, the good treatment effect can be ensured.

The present invention provides a pet deodorizing tablet which is mainly prepared by using the following components in parts by weight: complex enzymes 8-21 parts, yucca saponin 5-10 parts, green tea extract 20-30 parts, probiotics 8-28 parts, dextrin 5-30 parts, aspartame 1-3 parts, starch 5-15 parts, magnesium stearate 0.5-2 parts, and the complex enzymes comprise the following components: papain 1500-2000 u/g, bromelain 3000-4000 u/g, phytase 1000-1680 u/g, cellulase 600-750 u/g, beta-glucanase 1500-2300 u/g and trypsin 1800-2560 u/g. The pet deodorizing tablets can comprehensively eliminate pets' bad breath, shit smell and other body odors, have a more comprehensive and effective deodorizing effect, and can effectively improve the gastrointestinal function, immunity and health condition of pets.

The invention discloses a novel safe environmentally-friendly feed additive for the livestock and poultry industry. The novel safe environmentally-friendly feed additive is prepared from pheophytin, betaine, metaplexis japonica extract, oxidized matrine, yucca saponin, rose-boot extract, flos caryophylli powder, clinoptilolite powder and illite powder according to a scientific ratio. The novel safe environmentally-friendly feed additive has activation, adjustment and quick-acting functions, improves animal immunity, maintains the balance of florae in a livestock intestinal tract, improves muscle quality, a culture environment and an organic decomposition rate, reduces an ammonia concentration of air in an animal house and realizes deodorization. In breeding, the novel safe environmentally-friendly feed additive can fully avoid antibiotic medicines, reduce mycotoxins, prevent enterorrhea and diarrhea, resist stress and coccidium, improve a feed conversion ratio and an egg yield, and eliminate heavy metal and drug residues.

The invention provides a method and a device for treating coal chemical industry production sewage. The method comprises the following steps: allowing medium-pressure overheat steam with the pressure of 3.0 to 4.1 MPa and the temperature of 360 to 420 DEG C to enter a high-pressure steam stripping tower from the bottom of the tower, wherein the medium-pressure overheat steam serves as a heat source; directly heating the coal chemical industry production sewage, which enters the tower from the upper part of the tower and is pressurized to be 3.7 to 4.4 MPa, from bottom to top in a countercurrent manner; resolving soluble gases or volatile substances of the coal chemical industry production sewage; and discharging the generated coal chemical industry treated water from the bottom of the high-pressure steam stripping tower and discharging saturated steam containing resolved gases from the top of the tower. According to the method provided by the invention, an active carbon dephenolizing/CLL ammonia recovering process of coal chemical industry production sewage is changed into a medium-pressure overheat steam stripping process, so the separated pollutants can be recycled and the treated sewage returns a system to be comprehensively utilized.

The present invention discloses a process method for producing lubricating oil base oil through a poor-quality raw material. According to the process method of the present invention, a poor-quality raw material firstly enters a first-stage reaction zone to carry out a hydrorefining reaction, a co-current flow process and a counter flow process are concurrently adopted in the first stage, the generated oil obtained in the first stage enters a second-stage reaction zone to carry out a deep hydrogenation reaction, and the second-stage reaction effluent is subjected to hydrocracking; and the cracking tail oils are subjected to cutting pre-fractionation to obtain the suitable tail oil distillate, and the suitable tail oil distillate is subjected to an isomerizing dewaxing and finishing reaction to obtain the lubricating oil base oil distillate. With the method of the present invention, the nitrogen-containing impurities in the poor-quality raw material can be subjected to hydrotreating under the relatively mild condition so as to make the poor-quality raw material meet the hydrocracking feeding requirement, such that the lubricating oil base oil raw material source is broadened; and the operation period of the device can be increased and the poor-quality raw material can be processed, or the processing capacity of the device can be increased in the same operation period.

The invention belongs to the field of a tobacco product, and particularly relates to a method for preparing extract of momordica charantia. The method comprises the following steps of: (1) leaching a momordica charantia sample by ethanol solution, and separating to obtain original leaching solution; (2) carrying out extraction on the original leaching solution by n-butyl alcohol, and separating to obtain extraction liquid. The invention further relates to extract of momordica charantia, a composition for tobacco and application of the extract of momordica charantia. When one or more of momordica saponins A, momordica saponins B, the extract of momordica charantia disclosed by the invention and the composition for tobacco, which is disclosed by the invention, are added into a cigarette holder, a filter tip or a filter stick to produce a cigarette, ammonia content in mainstream smoke of the cigarette can be obviously reduced.

The invention relates to an ammonia recovering process and ammonia recovering equipment, namely a method and a device for recovering ammonia from gas from ammonia production plants at a low temperature and isobaric pressure. Several or all coolers of the isobaric ammonia recovering device cool ammonia water and absorb water used by ammonia by using liquid ammonia of which the temperature is lower than that of cooling water. The coolers include a double-travel internal cooler in a bubbling absorber, a coil tube type cooler, an out-tower ammonia water cooler, a demineralized water cooler, a first out-tower small ammonia water cooler, a second out-tower small ammonia water cooler. In the invention, ammonia water is cooled without using cooling water, and power is saved; the cooling area of the out-tower ammonia water coolers and the cooling area of the coolers on all layers of tower plates increase gradually from top down and are allocated according to different ammonia absorbing capacities and different dissolution heat released on all layers of tower plates and the cooler loads on the coolers on the layers of tower plates; and thus, the required cooling area is guaranteed and does not wasted, and the ammonia absorbing capacities on all layers of tower plates are fully played.

The invention relates to a process for working up wastewaters which are obtained in the purification of crude aromatic nitro compounds after the nitration of aromatic compounds, comprising the following steps:

• • (a) single-stage or multistage washing of the crude aromatic nitro compound to obtain at least one organic phase and at least one aqueous phase, and removal of the aqueous phase or of the aqueous phases, step (a) comprising the addition of a base other than ammonia, and then
  • (b) optional removal of organic constituents from at least a portion of the aqueous phase or aqueous phases obtained in step (a) by stripping, preferably with steam, then
  • (c) removal of organic compounds from at least a portion of the aqueous phase or aqueous phases resulting from step (a) or step (b) by thermal and/or oxidative degradation, then
  • (d) distillative depletion of ammonia from at least a portion of the aqueous phase or aqueous phases resulting from step (c), and then
  • (e) optional supply of at least a portion of the aqueous phase resulting from step (d) to a biological wastewater treatment.

The invention discloses an adsorbing agent for reducing the content of ammonia in cigarette smoke and a preparation method and application thereof. The adsorbing agent is prepared from 6-((2E)-3-(2-furyl))-2-acrylic acid)-D-galapyranose ester, 2,3-bis-((2E)-3-(2-furyl))-2-acrylic acid)-D-galapyranose ester, ethanol, propanediol, glycerol and water in a certain ratio. The adsorbing agent is applied to a cigarette filter stick to manufacture a filter stick in trial, and the filter stick in trial can be further applied to a cigarette to manufacture a cigarette in trial, and then the detection of the ammonia content and the sensory evaluation are carried out on main smoke of the cigarette in trial. The results show that the adsorbing agent has the effects of reducing the content of ammonia in main smoke of the cigarette and preserving sensory humidity.